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Telecommunications > Transmitter > Power Control, Power Supply, Or Bias Voltage Supply Power Control, Power Supply, Or Bias Voltage SupplyPower Control, Power Supply, Or Bias Voltage Supply patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.03/01/07 - 20070049221 - Multiple output rf signal generator A multiple output RF signal generator has a frequency translator. A modulator modulates the frequency translator. A number of power control modules each has an input that receives an output from a frequency translator. ... 03/01/07 - 20070049220 - Apparatus and method of local oscillator leakage cancellation A transmitter includes a first mixer to generate a first output signal by up-converting a first baseband signal having a first DC offset component. A second mixer generates a second output signal by up-converting a second baseband signal having a second DC offset component. The second output signal is subtracted ... 02/22/07 - 20070042729 - Inductive power supply, remote device powered by inductive power supply and method for operating same An inductive power supply includes a transceiver for sending information between the remote device and the inductive power supply. The remote device determines the actual voltage and then sends a command to the inductive power supply to change the operating frequency if the actual voltage is different from the desired ... 02/22/07 - 20070042728 - Transmitter having dc offset cancellation A transmitter generates a transmitter output signal from first and second baseband signals. The transmitter includes a detector to detect a local oscillator (LO) leakage signal in the transmitter output signal. A controller coupled to the detector determines a direct LO coupling component and a baseband DC offset component of ... 02/15/07 - 20070037533 - Radio transmitter A radio transmitter includes a transmitter circuit which produces a signal at a first frequency, and has digital divider circuitry, for dividing the first frequency to produce a signal at a second frequency. The noise performance of the digital divider is adjusted, depending upon the transmitter output power. Specifically, the ... 02/08/07 - 20070032209 - Apparatus, system, and method for measuring power delivered to a load Apparatus, system, and method including a circuit including an element having an electrical impedance, an input node to receive a signal, and an output node to couple to a load; a sensing circuit coupled to the input node and the output node to sense a differential voltage between the input ... 02/01/07 - 20070026824 - Electronic component for amplifying high frequency and radio communication system A high-frequency power module as a component of a radio communication system capable of performing communications in two frequency bands such as GSM and DCS and has a first transistor for output detection for receiving a signal which is the same as an input signal of a first power amplification ... 02/01/07 - 20070026823 - Amplifier arrangement, polar transmitter having the amplifier arrangement and method for amplifying signals An amplifier arrangement contains a first signal input for supplying a carrier signal, a second signal input for supplying an amplitude modulation word and an amplifier stage. The amplifier stage is connected to a reference potential connection and, by means of a control connection via a means for DC signal ... 01/25/07 - 20070021079 - Wireless electronic device and method for controlling the wireless electronic device A wireless electronic device includes a first antenna having a first gain, a second antenna having a second gain, and a processing circuit for alternatively performing a first mode or a second mode. When the first mode is performed, the processing circuit outputs wireless signals via the first antenna, and ... 01/18/07 - 20070015476 - Method and apparatus for reverse link throttling in a multi-carrier wireless communication system In one embodiment, the patent application comprises an access terminal, comprising a processing unit, a memory operably connected to the processing unit, a receive circuitry operably connected to the processing unit, a transmit circuitry having a power amplifier used in both single carrier and multi-carrier operations, wherein said transmit circuitry ... 01/18/07 - 20070015475 - Power saving in a transmitter A transmitter comprises a power amplifier (PA) with a power supply input (PI) and an output (PAO) to supply a transmission signal (Vo) with an output power (Po). A power supply (PS) has power supply outputs (PSO1, PSO2) to supply a first power supply voltage (PV1) with a first level ... 01/11/07 - 20070010218 - Apparatus and method for high efficiency rf power amplification using drain bias adaptation An RF transmitter having an RF power amplifier comprising: 1) a drive transistor that receives an input RF signal and generates an output RF signal; and 2) a drain bias adaptation circuit for supplying drain current to the drive transistor. The drain bias adaptation circuit comprises: i) a first switch ... 01/04/07 - 20070004351 - Methods for determining the gains of different carriers, radio transmission units and modules for such units The invention relates to methods for determining the separate radio frequency gains for carriers in a multi-carrier transmitter of a radio transmission unit of a radio communications system. In order to enable a simple and accurate estimation of the gains, it is proposed to determine the individual gains (G1-GN) of ... 01/04/07 - 20070004350 - System and method for transmitting signal in a communication system A system and method for transmitting a signal in a communication system are provided. In the signal transmitting method, a multi-FA signal is generated by combining single FA signals to be transmitted by N FAs. An operation mode is determined for N MMPAs according to a used FA strategy and ... 01/04/07 - 20070004349 - Power estimation of a transmission Embodiments of power estimation of a transmission are presented herein. ... 12/28/06 - 20060293003 - High-efficiency modulating rf amplifier The present invention, generally speaking, provides for high-efficiency power control of a high-efficiency (e.g., hard-limiting or switch-mode) power amplifier in such a manner as to achieve a desired modulation. In one embodiment, the spread between a maximum frequency of the desired modulation and the operating frequency of a switch-mode DC-DC ... 12/28/06 - 20060293002 - High-efficiency modulating rf amplifier The present invention, generally speaking, provides for high-efficiency power control of a high-efficiency (e.g., hard-limiting or switch-mode) power amplifier in such a manner as to achieve a desired modulation. In one embodiment, the spread between a maximum frequency of the desired modulation and the operating frequency of a switch-mode DC-DC ... 12/28/06 - 20060293001 - Apparatus for mobile communication system Disclosed is an apparatus for mobile communication system capable of constructing a system such as a mobile phone by setting a voltage corresponding to the characteristic variation of a PA even when a PA having characteristic variation is used. The mobile phone is the one employing the polar loop method, ... 12/21/06 - 20060286947 - Transmission output control apparatus Provided is a transmission output control apparatus including: a level control circuit operable to adjust a level of an inputted signal; a power amplifying circuit including a plurality of amplifying stages and being operable to amplify the signal whose level has been adjusted by the level control circuit; an antenna ... 12/14/06 - 20060281422 - Method and system for transmit power control in a multiple-input multiple-output wireless communication system The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback ... 12/07/06 - 20060276148 - Method and apparatus for reducing standby power consumption of a handheld communication system Method and apparatus for managing power consumption within a handheld multistandard communication system are disclosed and may comprise receiving a power setting signal from a control device within the handheld multistandard communication system. The power setting signal may indicate a desired power level setting. In accordance with the power setting ... 11/30/06 - 20060270367 - Integrated rf front end with stacked transistor switch A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering network, and an antenna switch to couple the conditioned PA signal to an antenna. An output ... 11/30/06 - 20060270366 - Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop A supply voltage controlled power amplifier that comprises a power amplifier, a closed power control feedback loop configured to generate a power control signal, and a dual voltage regulator coupled to the power control feedback loop, the dual voltage regulator comprising a first regulator stage and a second regulator stage, ... 11/23/06 - 20060264190 - System and method for linearizing nonlinear power amplifiers An apparatus linearizing and technique for linearizing a nonlinear power amplifier used in transmitters of systems for digital wireless communications. Linearization of the nonlinear amplifier is achieved by adding additional signals generated from a specification-given input data stream to the output of the nonlinear power amplifier. The invention allows use ... 11/23/06 - 20060264189 - Power supply A power supply (1) for a load in the form of a PCMCIA card (2) has and onboard GPRS class (10) module (not shown). The module, and therefore card (2), demands a load current iload that has an average value over time and periodic instantaneous peak values (ipeak) that are ... 11/23/06 - 20060264188 - Power supply for a communications module that demands high power during predetermined periods A power supply (1) is provided for a communications module, in the form of a cellular telephone GPRS module (2). This module demands high power during predetermined periods. Supply (1) includes a battery module (3) for providing module (2) with a supply voltage that, in this embodiment, is about 3.6 ... 11/02/06 - 20060246858 - Switchable power level detector for multi-mode communication device A method and apparatus for power detection in a multi-mode communication device configured for operation in different modes or frequency bands. A detector monitors the power level of an amplified outgoing signal. The detector may be configured with a switch and two or more samplers. Responsive to the mode of ... 11/02/06 - 20060246857 - Power saving in a transmitter A transmitter comprises a power amplifier (PA) which has an amplifier powersupply input (PI) and an output (PAO) to supply a transmission signal (Vo) with an output power (Po). A power supply (PS) has power supply outputs (PSO1, PSO2) to supply a first power supply voltage (PV1) and a second ... 10/26/06 - 20060240788 - Transmission output control circuit, and wireless device using the same According to a transmitting output control circuit, one end of a coupling capacitor and one end of main line of a directional coupler are coupled with an output terminal of a power amplifier. A switch for coupling the other end of the coupling capacitor and one end of a sub ... 10/19/06 - 20060234655 - Amplifier apparatus, polar modulation transmission apparatus and wireless communication apparatus A quantizer 122, and a plurality of down-samplers 124-1 to 124-N down-sampling the quantized output at a speed of (1/N) of the sampling rate of the quantizer 122 and shifting the respective phases by (360/N) degrees so as to provide a latched output, are provided. As a result, it is ... 09/28/06 - 20060217088 - Transmission power control method and device Disclosed is a method and an apparatus for controlling transmission electric power capable of minimizing a decrease in the amount of maximum transmission electric power without degrading an adjacent channel leakage power ratio when code-multiplexing additional control information with data and main control information. A mobile device checks values of ... 09/07/06 - 20060199553 - Integrated transceiver with envelope tracking A transceiver comprises an amplifying circuit for amplifying an input signal to produce an output signal. A power supply is operable for varying the level of power supplied to the amplifying circuit in response to variation of an input signal envelope directed to the power supply. A processing circuit is ... 09/07/06 - 20060199552 - Method and system for self-calibrating transmit power A small number of transmissions are performed at a sufficient number of frequencies and power levels so that a correlation between frequency, measured power, and detector values is established. Once a correlation is established, the wireless transmitter employs the measured data and calculates target detector values for all supported frequencies ... 08/31/06 - 20060194551 - Power amplifier and polar modulation system The power amplifier of the present invention is a power amplifier used in a communication device which communicates in a plurality of transmission modes of different power levels while switching the power level from mode to mode, and includes: an input terminal to which a signal is inputted; a first ... 08/24/06 - 20060189283 - Carrier leak reduction transmitter circuit A transmitter circuit has two mixers that modulate a carrier wave according to an input signal, outputs a signal having information in a phase and an amplitude, detects a DC offset in each of the mixers, and adds a DC voltage that corrects the detected DC offset to the input ... 08/24/06 - 20060189282 - Transmitter A transmitter for averagedly suppressing the variation in input level of an amplifier according to variation in carrier level. The transmitter comprises an input power calculation section (16) for calculating mean input power of each carrier, an output power calculating section (17) for calculating mean output power of each carrier ... 07/27/06 - 20060166630 - Dynamic bias for rf power amplifiers A method for wireless communication that dynamically adjusts RF amplifier operating bias for the subscriber unit's transmitter in response to a power control signal. The invention provides high-efficiency RF power amplification for applications where the available power source is limited. The invention uses a power control signal resident in wireless ... 07/20/06 - 20060160505 - System-in-package wireless communication device comprising prepackaged power amplifier A substantially rectangular shaped power amplifier module includes a power amplifier for amplifying radio frequency signals, a bias control terminal and a power sensing terminal disposed on the same side of the power amplifier module, an input terminal and a ground terminal disposed on the same side of the power ... 07/20/06 - 20060160504 - System-in-package wireless communication device comprising prepackaged power amplifier A substantially rectangular shaped power amplifier module includes a power amplifier for amplifying radio frequency signals, a bias control terminal and a power sensing terminal disposed on the same side of the power amplifier module, an input terminal and a ground terminal disposed on the same side of the power ... 07/20/06 - 20060160503 - Multi-mode power amplifier module for wireless communication devices A power amplifier can amplify an input radio frequency signal to produce an output radio frequency signal in response to a bias control signal. A programmable digital control unit produces the bias control signal and to transmit the bias control signal to the power amplifier. ... 07/20/06 - 20060160502 - Feedforward spur cancellation approach using low ip amplifier A power amplifier circuit (40) that includes an error correction loop (44) having a lower IP3 error correction amplifier (54) than a main power amplifier (46) in a main signal path (48). A first attenuator (52) in the error loop (44) attenuates the RF signal, and provides more attenuation of ... 07/13/06 - 20060154626 - Method and apparatus for controlling a transmitter A transmitter includes a transformer that is configured to transform a baseband signal into an amplitude information signal and a phase information signal. The transmitter includes a ramping control unit configured to generate a power control signal. The transmitter includes a mixer that is configured to combine the amplitude information ... 07/06/06 - 20060148430 - Power management of a transmitter and supporting methods and apparatus In the present technique for managing power of a transmitter on a mobile station, the transmitter power is checked (124) against a training current threshold that can result in the termination of a training ramp during level training mode of the mobile station. Another transmission current threshold is used for ... 06/29/06 - 20060141960 - Triggering an emergency mode in a radio communication system and methods thereof A mobile communication device (106) comprising a transceiver (202), and a processor (203) coupled to the transceiver. The processor is programmed to enter (304) an emergency mode corresponding to an alteration type of an element of the mobile communication device, and process (306) messages according to the emergency mode. ... 06/22/06 - 20060135096 - High-efficiency modulating rf amplifier The present invention, generally speaking, provides for high-efficiency power control of a high-efficiency (e.g., hard-limiting or switch-mode) power amplifier in such a manner as to achieve a desired modulation. In one embodiment, the spread between a maximum frequency of the desired modulation and the operating frequency of a switch-mode DC-DC ... 06/22/06 - 20060135095 - System for controlling power on a mobile station and supporting method and apparatus In the present power control technique, a power control circuit (404) that is operably coupled to a receiver circuit (412) assesses (514, 522) a tclip adjust value based on a power cutback value from the receiver circuit. The tclip adjust value is forwarded to a peak to average ratio control ... 06/22/06 - 20060135094 - Method and apparatus to manage power consumption of a semiconductor device Briefly, a method an apparatus of a power management system of a semiconductor device capable of managing a power consumption of the semiconductor device by varying an operating voltage of the semiconductor device according to a voltage value based on a reference number. ... 06/15/06 - 20060128325 - Low noise switching voltage regulator A low-noise switching voltage regulator for supplying a voltage to a radio frequency (RF) power amplifier is disclosed. In one embodiment, the invention can be conceptualized as a power amplifier supply circuit, comprising a pair of oppositely polarized semiconductor switches, and a data formatter configured to supply a data stream ... 06/15/06 - 20060128324 - Amplifier with varying supply voltage and input attenuation based upon supply voltage A radio frequency amplifier module (500) has a voltage monitor (546) that monitors an input supply voltage of an input power supply (534) and an adjustable power supply (512) that accepts power from the input power supply (534) and produces an adjustable power supply output that has a controllable voltage. ... 05/25/06 - 20060111058 - Communications systems and methods using wireline adapters Systems and techniques for communication over telephony wireline. A command interface and control device may include a wireline input configured to connect the device to an operative line of a wireline telephony network (such as the PSTN) and to transmit voice signals to and receive voice signals from the wireline ... 05/11/06 - 20060099919 - Systems and methods for vector power amplification Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, ... 05/04/06 - 20060094377 - Method and system for output common mode control for reducing dc offset for an if mixer that downconverts a received signal to dc without introducing additional offset A method and system for output common mode control for reducing DC offset for an IF mixer that downconverts a received signal to DC without introducing additional offset is provided. Aspects of the method may comprise averaging signals having an output common mode DC level, which are generated from an ... 04/20/06 - 20060084399 - Semiconductor device and module having a transceiver with a built-in regulator An object of the present invention is to provide a transmitter-receiver RF-IC having a built-in regulator, which can reduce a minimum value of an input voltage of the regulator without increasing its area, the input voltage being supplied from a battery, the transmitter-receiver RF-IC being capable of normal operation with ... 04/20/06 - 20060084398 - Method and apparatus for predictively optimizing efficiency of a radio frequency (rf) power amplifier An approach provides for predictive and continuous supply voltage adjustment of a Radio Frequency (RF) power amplifier in a wireless terminal. A voltage value is predictively determined to continuously control a voltage converter of the wireless terminal for maximizing RF power amplifier efficiency. A control signal is output based on ... 03/16/06 - 20060057980 - Transmitter circuit with modulated power amplifier bias control based on rf carrier envelope tracking The present invention is a transmitter circuit in which envelope tracking of a power amplifier output is used to derive its power supply modulation. The circuit includes a power amplifier for amplifying an RF signal, a voltage power source and a switching amplifier for producing a modulated output responsive to ... 03/16/06 - 20060057979 - Dynamic power control circuit of wireless communication device The present invention is to provide a dynamic power control circuit for a wireless communication device, which comprises a power detector, a comparator, a low pass filter and an adder disposed between a radio frequency auto-gain control circuit and an antenna thereof. A reference voltage is imposed on the adder ... 03/16/06 - 20060057978 - Wireless transmitter configuration A method in a mobile wireless communication transmitter, the method including obtaining (200) transmitter power related information, for example, transmitter headroom information and transmitter inter-modulation distortion information, and requesting (210) a change in transmitter channel configuration, for example, frame size, based on the transmitter power related information obtained. In another ... 03/09/06 - 20060052069 - Communication apparatus A communication apparatus which performs wireless communication with other communication devices existing in the neighborhood, includes: a transmission processing element 13 for processing a transmission signal; an antenna 17 for wirelessly transmitting an output of the transmission processing element 13; and an output power regulation element 16 for attenuating the ... 03/02/06 - 20060046666 - Transmission device, transmission output control method, and radio communication device Either linear operating mode or saturation operating mode is set as the operating mode of a high-frequency power amplifier (15) on the basis of an operating mode set signal (107). The gain of a variable gain amplifier (14) provided in front of the high-frequency power amplifier (15) and values of ... 02/23/06 - 20060040625 - Transmission power amplifier unit A transmission power amplifier unit of a base-station apparatus for compensating for non-linear distortion of a transmission power amplifier by feed-forward control is provided with a gain varying unit for varying gain of the transmission power amplifier unit. At start-up of the transmission power amplifier unit, a controller determines whether ... 02/09/06 - 20060030281 - Method for transmit power compensation in a mobile communication terminal and communication terminal for implementing said method The present disclosure relates to an apparatus and method for transmitting power compensation in a mobile communication terminal. Under a preferred embodiment, a terminal is equipped with a power amplifier, whose output signal amplitude is dependent upon a frequency of an input signal of the power amplifier, an HF connector, ... 02/02/06 - 20060025089 - Stable process induced correction bias circuitry for receivers on single-ended applications A second single-ended receiver having a first stage for receiving an input signal and outputting a pair of corresponding output signals, and a second stage for receiving the pair of output signals and outputting a corresponding single output signal. First and second pull-down transistors are coupled to first and second ... 01/26/06 - 20060019621 - Radio frequency circuit and communication system with power amplifier control A radio frequency circuit includes a radio frequency signal source which produces a radio frequency signal, a power amplifier which power amplifies the radio frequency signal from the radio frequency signal source, and a control unit which controls an output power of the power amplifier. Particularly, the control unit is ... 01/26/06 - 20060019620 - Transmission module A transmission module includes: a power amplifier amplifies power of a radio frequency signal that is to be transmitted via an antenna; a coupler that allows the radio frequency signal from the power amplifier to travel toward the antenna and causes adverse radio frequency power to ground; and a substrate ... 01/26/06 - 20060019619 - Differential signal receiver and method A differential signal receiver and method is disclosed. One embodiment relates to a receiver for receiving a differential signal. The receiver includes a first voltage-to-current converter that converts the voltage received at a first input to a first current, and a second voltage-to-current converter that converts a voltage signal received ... 01/12/06 - 20060009174 - Variable-loss transmitter and method of operation An exemplary transceiver comprises a power amplifier configured to receive a source signal and generate an amplified output signal, an antenna coupled to the power amplifier, the antenna being configured to radiate the amplified output signal, and a controller coupled to the power amplifier. The controller is configured to control ... 01/05/06 - 20060003715 - Circuit and method for adjusting threshold drift over temperature in a cmos receiver A receiver for use in a device such as a memory device is provided. The receiver circuit is located on the same integrated circuit as a temperature sensor (or other sensor). A data receiver and strobe receiver are coupled to the temperature sensor. A flip-flop receives a data input from ... 12/29/05 - 20050287966 - Wireless communication system and semiconductor integrated circuit A wireless communication system uses a transmission power detection circuit. The transmission power detection circuit has excellent linearity of detection output for transmission output power and can obtain detection output not having temperature dependence. The transmission power detection circuit has rectifying detection part that includes plural amplifiers connected in series ... 12/29/05 - 20050287965 - Low current direct conversion transmitter architecture Disclosed is a method to operate a RF transmitter, and an RF transmitter constructed to operate in accordance with the method. The method includes determining a transmitter output power and varying a level of a signal at a transmitter phase modulator according to the transmitter output power so as to ... 12/22/05 - 20050282507 - Method and apparatus for controlling a tx power amplifier A method and an apparatus for controlling a TX power amplifier are provided in the present invention. The invention is applied for generating a power control curve in a power variation area to control the power variation for signal transmission when the TX power amplifier transmits the data during two ... 12/15/05 - 20050277391 - Transmitting apparatus The present invention provides a transmitting apparatus equipped with a modulator, a frequency converter that up-converts a modulated signal (or digital IF signal) of a baseband, and an amplifier that amplifies a transmit signal lying in a radio frequency band to a desired signal level. In the transmitting apparatus, a ... 12/15/05 - 20050277390 - Transmission modulation apparatus Linear transmission modulation apparatus 100 has high frequency amplifier 102 that amplifies the high frequency phase modulation signal of a high frequency signal and power source voltage controller 101 that amplifies the baseband amplitude modulation signal of the high frequency signal. Power source voltage controller 101 has delta sigma amplifier ... 12/01/05 - 20050266811 - Ramp signal with boost portion preceding a time slot A transmitter includes a power amplifier which is capable of both linear and non-linear operation, controlled by first and second control loops. A power controller includes a capacitive component, and controls the gain of the power amplifier. A ramp generation circuit provides a control signal to the power controller. It ... 11/03/05 - 20050245213 - Communication apparatus In a communication apparatus, effective automatic power control (APC) is realized. Transmission object signal level changing units change a level of a transmission object signal of each channel, and transmission filter units carry out filtering for a signal of each channel after its level was changed with a characteristic for ... 11/03/05 - 20050245212 - Electronic component for amplifying high frequency power and radio communication system A high-frequency power module as a component of a radio communication system capable of performing communications in two frequency bands such as GSM and DCS includes: a first transistor for output detection for receiving a signal which is the same as an input signal of a first power amplification transistor ... 10/27/05 - 20050239423 - Power amplifier efficiency The present invention relates to a method and an arrangement for optimizing the efficiency of a power amplifier (1) that is utilized for transmission of radio signals in a portable radio communication device, such as a mobile phone. The impedance loading the power amplifier (1) is controlled by a controller ... 10/13/05 - 20050227644 - Constant gain nonlinear envelope tracking high efficiency linear amplifier An envelope tracking radio frequency (RF) power amplifier having an adaptive envelope signal processing circuit is disclosed. An RF input voltage is sampled by the adaptive envelope signal processing circuit which provides control signals to the power supply which supplies voltages to RF power devices in order to simultaneously satisfy ... 10/13/05 - 20050227643 - Apparatus and method for detecting radio frequency transmission power levels An apparatus and method for detecting radio frequency transmit power levels produced by a power amplifier of a wireless device is described. In one exemplary apparatus implementation, the apparatus includes a power amplifier, an antenna switch and a power amplifier detector. The power amplifier is configured to amplify a transmit ... 10/13/05 - 20050227642 - Hardware efficient rf transceiver i/q imbalance compensation based upon taylor approximation Radio transceiver circuitry includes I/Q imbalance compensation logic within at least one of a digital modulator or a digital demodulator, depending upon whether the I/Q imbalance compensation block is compensating for I/Q imbalance in a transmit path or in a receive path. For a transmitter, a digital processor includes a ... 10/13/05 - 20050227641 - Apparatus and method for detecting radio frequency transmission power levels An apparatus and method for detecting radio frequency transmit power levels produced by a power amplifier of a wireless device is described. In one exemplary apparatus implementation, the apparatus includes a power amplifier, an antenna switch and a power amplifier detector. The power amplifier is configured to amplify a transmit ... 09/29/05 - 20050215209 - Transmitter An amplitude component and a phase component of a modulated signal are inputted into a power supply terminal and an input terminal of an RF power amplifier, respectively, and a modulated wave that is produced by demodulating an original modulated signal is obtained from the RF power amplifier. A supply ... 09/22/05 - 20050208909 - High-frequency power amplifier and communication apparatus A temperature compensation circuit 145 included in a collector voltage generation section 130a applies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl′ (T) is applied to a collector terminal of a bipolar transistor 110 through ... 09/22/05 - 20050208908 - Process device with improved power generation A wireless field device is disclosed. The field device includes a wireless communications module and an energy conversion module. The wireless communications module is configured to wirelessly communicate process-related information with another device. The energy conversion module is coupled to the wireless communications module. The energy conversion module is configured ... 09/01/05 - 20050191977 - On-chip impedance matching power amplifier An on-chip impedance matching includes a transistor and a tank circuit. The transistor is operably coupled to receive an input signal. The tank circuit is operably coupled to the transistor, wherein a tap of the tank circuit provides an output of the on-chip impedance matching power amplifier, wherein the tank ... 08/25/05 - 20050186923 - Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on ... 08/18/05 - 20050181751 - Power amplifier arrangement having an antenna, and a method for amplification and emission of a signal A power amplifier arrangement having a distributed antenna is disclosed. The power amplifier arrangement has two or more signal paths which are coupled to a common input. Each signal path has an amplifier with a downstream antenna. The respective signal paths with the antenna are activated or deactivated by a ... 08/18/05 - 20050181750 - Automatic matching and tuning unit An automatic matching and tuning unit (AMTU), which connects the output from a low or medium frequency, high power radio transmitter, which requires a 50 ohm terminating impedance, to an antenna with an input impedance comprising low resistance in series with a high capacitive reactance. Sensors measure the phase angle ... 08/11/05 - 20050176389 - Very small aperture terminal with dual-input dc power control The present invention relates to a satellite signal transmitter, and in particular, to a satellite signal transmitter with a dual-input DC power control switch. ... 08/04/05 - 20050170796 - Adjusting the amplitude and phase characteristics of transmitter generated wireless communication signals in response to base station transmit power control signals and known transmitter amplifier characteristics A method and system for adjusting the amplitude and phase characteristics of wireless communication signals generated by an analog radio transmitter, based on transmit power control (TPC) signals received by a base station (BS) and known characteristics of a power amplifier (PA) included in the transmitter. A digital pre-distortion compensation ... 07/28/05 - 20050164661 - Emphasis circuit The present invention relates to an emphasis circuit, and more particularly to an emphasis circuit that can compensate for attenuating signals by applying an emphasis effect to the edges of a square wave input signal. An emphasis circuit according to the present invention adds an emphasis signal to a square ... 07/21/05 - 20050159117 - Class-l power-output amplifier A radio power output amplifier comprises a balanced radio power output that differentially drives a dipole antenna or other balanced load. One half of the differential power output drives one side of the antenna from ground to the maximum positive rail, while the other half of the differential power output ... 07/21/05 - 20050159116 - Method of self-calibration in a wireless transmitter A method of self-calibration of a wireless LAN communication device includes entering a self-calibration mode when the device is powered up or commanded by software. A packet stream is transmitted at an initial transmit power level. The packet stream may comprise standard data packets. The transmit power level may be ... 06/30/05 - 20050143028 - Dc offset-free rf front-end circuits and systems for direct conversion receivers A DCR RF front-end removes the DC term resulting from mixer port to port leakage and feeds RF and LO signals into the mixers with different phase combinations. The signal inputs to the mixers result in the intermediate frequency (IF) output of mixers being 180 degrees out of phase and ... 06/30/05 - 20050143027 - Method and apparatus for automatic data rate control in a wireless communication system A method and apparatus are provided for automatic data rate control in wireless communication systems, such as wireless LANs. A data rate controller adapts a transmission rate of said data based on a signal quality and a transmit power level. The data rate controller can also adapt the transmission rate ... 06/23/05 - 20050136868 - Uwb transmitting and receiving device for removing an unnecessary carrier component in a transmission signal spectrum An Ultra Wide Band (UWB) transmitting and receiving device that includes a Digital Signal Processor (DSP) for implementing a DC offset cancellation algorithm, an adder for adding a baseband transmission signal from the transmitter and a calibration signal produced by the algorithm of the DSP, a modulator for modulating the ... 06/23/05 - 20050136867 - Global management of local link power consumption Methods, and arrangements for power reduction in links, such as transmitters and receivers, based upon global decisions such as the data transmission frequencies, communications media, and traffic types associated with links, are disclosed. In particular, embodiments take advantage of high-level decisions by reconfiguring internal circuits of transmitters and receivers of ... 06/23/05 - 20050136866 - Power amplifier with serial interface and associated methods In a power amplifier, a serial bus interface is provided for sending and receiving information to other devices, such as a baseband controller. The power amplifier includes several control pins that can be used as a serial interface, or alternately, with a direct pin control interface. The power amplifier uses ... 06/23/05 - 20050136865 - Power amplifier with digital power control and associated methods In a power amplifier, a serial bus interface is provided for sending and receiving information to other devices, such as a baseband controller. The power amplifier includes several control pins that can be used as a serial interface, or alternately, with a direct pin control interface. The serial bus interface ... 06/23/05 - 20050136864 - Radio frequency modulator and methods thereof In one exemplary embodiment of the invention, an outphasing modulator may include at least a multiplier to multiply an amplitude modulation signal by a phase modulated carrier signal to generate a modulated signal. The outphasing modulator may also include a phase splitter to phase split the modulated signal to generate ... 06/02/05 - 20050118965 - Signal transmitter An amplitude component and a phase component among modulating signals are supplied into a radio frequency wave input terminal and a power supply terminal of a radio frequency power amplifier, respectively, and an original modulated wave is obtained from an output of the radio frequency power amplifier. The output of ... ### FreshPatents.com Support |