Amplifiers inventions 08/07

20070200619 - Preamplifier circuits and methods of calibrating an offset in the same: A preamplifier circuit includes a differential amplifying unit, an offset detection unit and a reference signal generation unit. The differential amplifying unit compares an input signal pair with a reference signal pair to generate an output signal pair. The offset detection unit detects an offset of the output signal pair... Agent: Marger Johnson & Mccollom, P.C.

20070200620 - Offset cancellation amplifier, display employing the offset cancellation amplifier and method for controlling the offset cancellation amplifier: Disclosed is an offset cancellation amplifier which includes a first differential pair, second differential pair, a common load circuit for the two differential pairs, current sources, an amplifier stage, and first and second capacitors. The first capacitor is connected to the gate of one transistor of the first differential pair.... Agent: Paul J. Esatto, Jr. Scully, Scott, Murphy & Presser, P.C.

20070200622 - Modulator apparatus operating at low supply voltage, and corresponding method of modulation: A modulator apparatus operating at a low supply voltage, configured for receiving an input-voltage signal in base band and supplying an output-voltage signal at a given modulation frequency under control of a signal generated by a local oscillator and comprising a transconductor stage that carries out a voltage-to-current conversion of... Agent: Seed Intellectual Property Law Group PLLC

20070200621 - Pwm digital amplifier with high-order loop filter: An improved PWM amplifier is disclosed that uses multiple integrators in the loop filter to provide high loop gain across the frequency band-of-interest. The frequency characteristics of the loop filter are optimized to distribute large loop gains across the entire band to provide large suppression of noise and distortions generated... Agent: Patent-trademark-copyright. Us

20070200623 - Amplifier, and step-down regulator and operational amplifier using the amplifier: An amplifier has an input stage amplifying circuit, an output stage amplifying circuit, and a negative feedback circuit. The input stage amplifying circuit differential-amplifies a first input voltage inputted to a positive phase input node and a second input voltage inputted to an opposite phase input node, and outputs from... Agent: Volentine & Whitt PLLC

20070200624 - Architecture and method for improving efficiency of a class-a power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to maintain overall constant gain of the class-a power amplifier at al: An architecture and method for improving efficiency of a Class-A power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to maintain overall constant gain of the Class-A power amplifier at all biasing configurations thereof. A biasing-current switching-network is operatively connected to the... Agent: Bernard S. Hoffman

20070200625 - Distortion compensating apparatus and method: The distortion compensating apparatus which adaptively updates a distortion compensation coefficient for an amplifier based on a difference between input and output signals of the amplifier, comprises: a distortion amount detector which detects the amount of distort of an output signal of the amplifier; a parameter holder which holds a... Agent: Katten Muchin Rosenman LLP

20070200626 - Power supply compensation: The invention relates to an amplifier comprising amplification means (AM) comprising an input and an output, said amplification means (AM) comprising a switching output stage delivering at least one output signal (OUS) via said output, said amplification means being fed by power supply means (PSM) said amplifier further comprising compensation... Agent: Cantor Colburn, LLP

20070200627 - Methods and apparatus for process invariant transconductance: In one aspect, a resistor process invariant transconductor is provided. The transconductor comprises a voltage input configured to receive at least one voltage signal, a current output configured to provide at least one current signal, wherein a ratio between the at least one voltage signal and the least one current... Agent: Wolf Greenfield & Sacks, P.C.

20070200628 - Gain boosting for tuned differential lc circuits: A gain boost circuit and methodology are described for providing improved gain boosting with tuned amplifier circuits, such as differential low noise amplifier circuits having output resonant tank circuits. By selectively controlling the current source for a negative transconductance stage coupled between the differential amplifier output and the output resonant... Agent: Garlick Harrison & Markison

20070200629 - Low voltage amplifier having a class-ab control circuit: A low voltage amplifier having a class-AB control circuit which generates minimal or no surge current when the output of the amplifier clips to ground or the negative rail. The amplifier includes an input stage, a summing circuit, a class-AB control circuit and an output stage. The input stage connects... Agent: Texas Instruments Incorporated

20070200630 - Systems and methods for common mode detection: Various systems and methods for common mode detection are disclosed. As one example, a common mode detection circuit including a differential input stage, a common mode replica stage, and an amplifier is disclosed. The differential input stage exhibits an input common mode, and includes two differential inputs. A signal from... Agent: Texas Instruments Incorporated

20070200632 - Regulated cascode circuits and cmos analog circuits include the same: A regulated cascode circuit includes a first MOS transistor of a first conductive type, a second MOS transistor of the first conductive type, a third MOS transistor of a second conductive type, a first current source and a second current source. The first MOS transistor is coupled between an output... Agent: Mills & Onello LLP

20070200631 - Amplifier circuit improved in linearity and frequency band: An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transistor bias unit, and an auxiliary transistor bias unit. The main transistor... Agent: Foley And Lardner LLP Suite 500

20070194845 - Power supply feed forward analog input filter component mismatch correction: Systems and methods for minimizing errors due to component variation in switching amplifiers utilizing power supply feed forward techniques. One embodiment comprises a digital PWM amplifier having an amplification subsystem for receiving a digital audio signal and producing an analog output signal. The amplifier includes a power supply feed-forward path... Agent: Law Offices Of Mark L. Berrier

20070194843 - Detecting amplifier out-of-range conditions: Out-of-range conditions are detected in amplifier CMOS or BiCMOS circuitry that includes a control transistor (MS) connected in series with a cascode transistor (MSC), and a differential amplifier (A1) with an inverting input connected to the node between the control transistor and the cascode transistor, a non-inverting input connected to... Agent: Texas Instruments Incorporated

20070194844 - Switched capacitor amplifier circuit and method for operating a switched capacitor amplifier circuit: Provided are a switched capacitor amplifier capable of removing an influence of an offset voltage and a 1/f noise using a simple circuit, and a method of operating the same. According to the present invention, a switched capacitor amplifier having an operational amplifier and switched capacitors includes: a first switched... Agent: Brinks Hofer Gilson & Lione

20070194847 - Operational amplifier: An operational amplifier according to an embodiment of the invention includes: a control signal input terminal receiving a digital control signal from an external device; first and second transistors as a differential pair of a differential amplifier circuit; a constant current circuit supplying a predetermined current to the differential pair;... Agent: Mcginn Intellectual Property Law Group, PLLC

20070194846 - Multiplier-transimpedance amplifier combination with input common mode feedback: A current mirror is used to bias an amplifier which is connected to a multiplier.... Agent: Fliesler Meyer LLP

20070194848 - Variable gain amplifier: A method of varying the gain of an amplifier and an amplifier array are provided. The amplifier array includes two or more amplifier stages (201, 202) connected in parallel with each amplifier stage having a gain control means. Input signal means (203, 204) are provided for each amplifier stage with... Agent: Lieberman & Brandsdorfer, LLC

20070194849 - Method for nullifying temperature dependence and circuit therefor: A circuit and a method for nullifying temperature dependence of a circuit characteristic. The circuit includes a plurality of transistors configured such that they generate a gate voltage that includes a threshold voltage as a component. The gate voltage is applied to a transistor to generate a current that is... Agent: Semiconductor Components Industries, LLC Bradley J. Botsch

20070194850 - Dynamically compensated operational amplifier: An operational amplifier is dynamically compensated depending on the internal state of the operational amplifier. Compensation is fully enabled only when the internal state indicates a risk of instability. When the internal state of the operational amplifier indicates there is no risk of instability, the compensation is totally or partially... Agent: North America Intellectual Property Corporation

20070194851 - Apparatus and method for affecting operation of a signal treating device: An apparatus for affecting operation of a signal treating device that is provided an operating voltage ranging between an upper voltage limit and a lower voltage limit for treating at least one input signal includes: a respective dynamic bias unit coupled with the signal treating device for each respective input... Agent: Texas Instruments Incorporated

20070194852 - Radio frequency power amplifying module with hetero junction bipolar transistor: The present invention is directed to compensate electric properties of an RF power module depending on changes with time, temperature dependency, variations, and the like of grounded emitter current amplification factor of an HBT. A compound semiconductor integrated circuit supplies reference current of a reference HBT depending on hFE of... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20070194855 - Continuous-time delta-sigma analog digital converter having operational amplifiers: The invention concerns a continuous-time delta-sigma analog-digital converter for the conversion of an analog input signal into a digital output signal, comprising an analog filter which filters the analog input signal and at least one externally circuited operational amplifier (OPAMP) for the formation of an integrator stage, a clock-driven quantiser,... Agent: Pearne & Gordon LLP

20070194856 - High frequency power amplifying circuit and high frequency electronic component using the same: In an amplifying circuit using a grounded-emitter high frequency signal amplifying bipolar transistor, the value of impedance of a bias circuit as seen from the base terminal of the bipolar transistor is made optimum in the baseband frequency. More specifically, the resistance value of a base ballast resistor Rbias connected... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070194853 - High-power amplifier: A high-power amplifier changes matching conditions of an output matching circuit 5 connected between a final stage amplifying element 3 and an output terminal 8 in response to the output power of the amplifying element 3. Thus, the efficiency at low output power can be greatly improved without reducing the... Agent: Birch Stewart Kolasch & Birch

20070194854 - Transconductance filtering circuit: A transconductance filtering device with a flexible architecture that can selectively present a different topology and/or order beginning with the same initial structure is disclosed. For example, depending on the communications standard detected, the elementary cells of the filtering circuit required to form the adapted filter are selected and connected... Agent: Docket Clerk

20070188223 - Operational amplifier: An operational amplifier for canceling an offset and continuously generating an output signal. The operational amplifier includes a first operational amplification unit and a second operational amplification unit each having at least one electrical characteristic that is substantially the same as one another. One of the operational amplification units performs... Agent: Arent Fox PLLC

20070188219 - Current sense amplifier for voltage converter: A current sense amplifier for a voltage converter wherein the voltage converter has at least one channel providing an output current through an output inductor, the current sense amplifier monitoring the current in the at least one channel through the output inductor, the current sense amplifier comprising a plurality of... Agent: Ostrolenk Faber Gerb & Soffen

20070188220 - Digital amplifier apparatus and method of muting digital amplifier apparatus: A digital amplifier apparatus includes a gain-adjusting section operable to adjust a gain of a digital audio signal; a dither-superposing section operable to superpose a predetermined dither on the digital audio signal; a pulse-width-modulated signal generating section operable to generate a pulse-width-modulated signal corresponding to the digital audio signal; an... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070188221 - Digital amplifier apparatus and method of resetting a digital amplifier apparatus: A digital amplifier apparatus includes a gain-adjusting section operable to adjust a gain of a digital audio signal; a dither-superposing section operable to superpose a predetermined dither on the digital audio signal; a pulse-width-modulated signal generating section operable to generate a pulse-width-modulated signal corresponding to the digital audio signal; an... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070188222 - Self-oscillating switching amplifier: A self-oscillating switching amplifier having an error amplifier output combined with the output of an output signal differentiator according predetermined weighing factors to force a small oscillation around the averaged output signal at a high frequency. The feedback voltage is sensed at the output of the switching amplifier. Additional feedback... Agent: Kokka & Hsu, PC

20070188224 - Cdma power amplifier design for low and high power modes: An amplifier circuit responsive to a power mode signal improves efficiency at low power levels without compromising efficiency at high power levels. At low power levels, high impedance is presented with suitable adjustment in the phase of the signal. Also, providing for predistortion linearization improves high power efficiency and switching... Agent: Morgan Lewis & Bockius LLP

20070188225 - Distortion compensating apparatus and method: The distortion compensating apparatus, which adaptively updates a distortion compensation coefficient for an amplifier based on a difference between input and output signals of the amplifier, comprises: a distortion amount detector which detects the amount of distortion of an output signal of the amplifier; a parameter holder which holds a... Agent: Katten Muchin Rosenman LLP

20070188226 - Power amplifier input structure having a differential output: A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The... Agent: Johnson & Associates

20070188227 - Amplifier: PWM signals having different polarities input from a +IN terminal and a −IN terminal are output to a pre-driver and a switching signal generation circuit. The pre-driver outputs to switches a gate signal for actuating a driver obtained from the input PWM signal. The switching signal generation circuit inputs a... Agent: Pillsbury Winthrop Shaw Pittman LLP

20070188228 - Series voltage regulator with low dropout voltage: A voltage regulation circuit intended to generate a regulated voltage for an electronic device, comprising: a transconductance amplifier based on a pair of MOS type differential amplifiers, said amplifier having a first input onto which a reference potential is applied and a second input onto which a counter reaction of... Agent: Seed Intellectual Property Law Group PLLC

20070188229 - Variable gain amplifier with constant input referred third order intercept: Variable gain amplifier (VGA) circuits and methods implemented in such circuits are disclosed. An example VGA circuit includes a differential transistor pair for receiving a differential input signal. The differential transistor pair, in operation, conducts a substantially constant current over a linear operating range of the variable gain amplifier circuit.... Agent: Honeywell International Inc.

20070188230 - Differential signal receiver: A differential signal receiver according to the present invention includes a waveform shaping circuit selectively outputting an upper limit value having a first potential difference from a first power supply potential, and a lower limit value having a second potential difference from the upper limit value, from a first and... Agent: Mcginn Intellectual Property Law Group, PLLC

20070188231 - Multi-path common mode feedback for high speed multi-stage amplifiers: The invention includes methods and systems for providing a multi-path common mode feedback loop in an amplifier system. Embodiments include techniques for dividing a common mode feedback current path to provide a slow common mode feedback current path and a fast common mode feedback current path. The slow and fast... Agent: Texas Instruments Incorporated

20070188232 - Wideband cmos gain stage: A CMOS gain stage includes biasing circuitry configured to insure saturation of a subsequent stage without a source follower circuit. The CMOS gain stage is optionally powered by a supply voltage that is greater than a permitted supply voltage for a processes technology that is used to fabricate the CMOS... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20070188233 - Amplifier device: An amplifier device including at least one operational amplifier, whereby a transformer is connected upstream from the input of the operational amplifier and the output signal of the operational amplifier or a signal generated from this output signal is fed back again to the input of the operational amplifier via... Agent: Schiff Hardin, LLP Patent Department

20070188234 - Transconductance circuit with improved linearity: A transconductance circuit, comprising: first and second field effect transistors, each having a drain, a source and a gate; wherein the first transistor is in a first current flow path between first and second nodes of the circuit, and is biased so as to operate in a saturation region of... Agent: Wolf Greenfield & Sacks, P.C.

20070188235 - Repeater open loop gain measurement: A repeater is configured so as to detect feedback oscillation conditions by detecting a gain parameter, and responding to the detected gain parameter by reducing the gain when the loop gain approaches unity. When used in a framed shared channel wireless communication systems, feedback oscillation conditions the loop gain of... Agent: Qualcomm Incorporated

20070188236 - Automatic gain control with three states of operation: A method and apparatus for an automatic gain control (AGC) loop that utilizes freezing and unfreezing states. A freezing process moves the AGC into a TRANSITION state from a NORMAL state, based on net change of VGA gain control codes over a monitoring time window. The freezing process then moves... Agent: Christie, Parker & Hale, LLP

20070188237 - Controlling the ratio of amplification factors between linear amplifiers: An electronic device where the ratio between two amplification factors of two amplifiers, called main amplifiers, is adjusted using a control means. The control means constantly equalizes the output signals of the two main amplifiers by adapting one of the control signals. The output signals are acted on in order... Agent: Docket Clerk

20070188238 - Single-ended input to differential-ended output low noise amplifier implemented with cascode and cascade topology: A low noise amplifier has the properties of low noise figure and high gain under a high-frequency operation. The low noise amplifier includes a first transistor, a first inductive impedance, a first gate voltage source, a matching circuit, an input, a second inductive impedance, a second transistor, a first capacitive... Agent: North America Intellectual Property Corporation

20070188239 - Integrated circuit having a filter circuit: A filter circuit arrangement comprising a circuit configuration having non-linear transmission characteristics for equalizing an input signal is disclosed. In one embodiment, the circuit configuration having the non-linear transmission characteristics is provided in a feedback loop of the filter circuit arrangement.... Agent: Dicke, Billig & Czaja

20070188240 - Ultra-wideband constant gain cmos amplifier: Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mentioned improvements over prior amplifiers. Additionally, circuits presented allow for improved... Agent: Fish & NeaveIPGroup Ropes & Gray LLP

20070182481 - Distributed amplifier with built-in filtering functions: A distributed amplifier uses non-uniform filtering structures to provide better control over pass-band and stop-band characteristics. The various sections can have different tap coefficients. A notch filter can be implemented for interference suppression or pulse shaping in an ultra-wideband transceiver.... Agent: Blank Rome LLP

20070182482 - Technique to improve the gain and signal to noise ratio in cmos switched capacitor amplifiers: The present invention comprises switched capacitor amplifiers including positive feedback on semiconductor devices, wafers, and systems incorporating same and methods for amplifying signals using positive feedback, while maintaining a stable gain and producing an improved signal-to-noise ratio. One embodiment includes a switched capacitor amplifier comprising a CMOS amplifier, a feed-in... Agent: Trask Britt, P.C./ Micron Technology

20070182483 - Power amplifier bias protection for depletion mode transistor: A power amplifier bias protection for a depletion mode transistor is achieved according to the invention with a threshold voltage adaptation connected to the Gate of the depletion mode transistor. That threshold voltage adaptation controls a supply voltage switch for the Drain of the depletion mode transistor such that when... Agent: Sughrue Mion, PLLC

20070182485 - Predistorter for linearization of power amplifier: A predistorter for the linearization of a power amplifier is provided. The predistorter can incorporate a field effect transistor (FET), which permits a design having low power consumption and broad band characteristics. The predistorter can be appropriate for integration with the power amplifier, unlike the conventional predistorters, because the subject... Agent: Saliwanchik Lloyd & Saliwanchik A Professional Association

20070182484 - Adaptive predistortion method and arrangement: An adaptive predistortion arrangement includes means (26, 40, 42, 44, 46) for up-converting a baseband signal (S1) into an intermediate frequency signal (S12) having frequency aliazing and means (18, 20, 220, 24, 26) for down-converting a radio frequency signal (S4) into an intermediate frequency signal (S7) having the same frequency... Agent: Ericsson Inc.

20070182486 - Systems and methods for over-current protection: Systems and methods for over-current protection in all-digital amplifiers using low-cost current sensing mechanisms. An over-current hard clipping unit receives a digital audio signal, clips the signal according to a clip level, and provides the signal to a modulator. The modulator modulates the signal to produce, e.g., a PWM signal... Agent: Law Offices Of Mark L. Berrier

20070182487 - Differential amplifer and operational amplifier: In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals (1, 2). When the voltage of the first signal is, e.g., less than the voltage value of a reference voltage... Agent: Mcdermott Will & Emery LLP

20070182488 - Differential amplifying system: A differential amplifying system has a differential amplifier for amplifying a voltage signal inputted from an input terminal and outputting the amplified voltage signal through an output terminal; an amplitude detection circuit for detecting an amplitude of said voltage signal inputted to said differential amplifier and outputting a detected current... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070182489 - System and method for programmably adjusting gain and frequency response in a 10-gigabit ethernet/fibre channel system: Aspects of the invention may provide a method and system for adjusting a gain and/or a frequency response of an input signal for a multimode PHY device. A signal divider (704) may apportion the input signal into a gain adjustment signal and/or an equalization adjustment signal upon receipt of the... Agent: Mcandrews Held & Malloy, Ltd

20070182490 - Power amplifier with close-loop adaptive voltage supply: A two- (or multi) stage power amplifier receives a variable RF input signal, and outputs an optimized. RF output signal from, for example, a mobile handset. The output power level from the handset is predetermined, as known in the art, by the received control signal from a base station. The... Agent: Cesari And Mckenna, LLP

20070182491 - Wideband amplifying circuit having large degree of freedom in bias setting: A wideband amplifying circuit includes a first bipolar transistor in which an RF signal is input at an input terminal, a transistor output circuit connected to a collector of the first bipolar transistor, and a feedback circuit connected between the output terminal of the transistor output circuit and a base... Agent: Beyer Weaver LLP

20070176675 - Differential amplifier and digital-to-analog converter: A differential amplifier comprises first, second, and third input terminals (1, 2, and 3), output terminal (4), first and second differential pairs (531 and 532) (533 and 534) driven by a corresponding current source and having output pairs commonly connected to load circuits (537 and 538), and an amplifier stage... Agent: Paul J. Esatto, Jr. Scully, Scott, Murphy & Presser

20070176676 - Modulation signals for a satellite navigation system: I Embodiments of the present invention relate to a modulation system in which an m-level, m>2, digital subcarrier is used to modulate a signal.... Agent: Wilmer Cutler Pickering Hale And Dorr LLP

20070176677 - Switched distributed power amplifier: A switched distributed power amplifier includes an amplifier stage that includes a first amplifier subsection and a second amplifier subsection, both including one or more field effect transistors (FETs). Each FET in the first amplifier subsection is coupled to a radio frequency (RF) input terminal. Each FET in the second... Agent: Bever Hoffman & Harms, LLP Tri-valley Office

20070176678 - Method and apparatus for controlling adaptive circuits: A feed-forward amplifier having a signal cancellation loop including a cancellation node that includes a gain controller and a phase controller. Each controller provides a discrete tap steering signal and modulates the corresponding tap steering signal with a discrete tracer signal that takes on a preselected sequence of values. The... Agent: Patent Administrator Katten Muchin Rosenman LLP

20070176679 - Differential amplifier and radio system with a differential amplifier: A radio system for communication is provided that has a differential amplifier for amplifying a transmission frequency, particularly 2.4 GHz, wherein the differential amplifier has a first inductor, which is magnetically coupled to a second inductor, and a capacitor. The capacitor, the first inductor, and the second inductor are wired... Agent: Mcgrath, Geissler, Olds & Richardson, PLLC

20070176680 - Operational transconductance amplifier: An operational transconductance amplifier (OTA) includes a first, a second and a third differential units, a voltage-to-current converting unit and a current subtraction device. The first and the second differential units receive a differential input voltage and the voltage-to-current converting unit converts it into an output current. The OTA adopts... Agent: Jianq Chyun Intellectual Property Office

20070176682 - Receiving circuit, and receiving apparatus and transmitting/receiving apparatus using the receiving circuit: In the configuration of the invention, a switch (113) is converted to a short state in response to a change in the gain of a variable gain amplifier (107) by means of a gain control apparatus 112, and thereby, the output terminal of a high pass filter (111) is fixed... Agent: Stevens, Davis, Miller & Mosher, LLP

20070176681 - Transmission power control device: A transmission power control apparatus which reduces the number of steps required for adjustments of the transmission power control apparatus and performs transmission power control with high accuracy in a wide dynamic range. The apparatus has a first variable amplifying circuit (122) with the resolution of 1 dB and a... Agent: Stevens, Davis, Miller & Mosher, LLP

20070176683 - Variable gain amplifier: A variable gain amplifier of the present invention connects an input and an output of a first variable gain amplifier circuit to an RF input terminal and an RF output terminal, respectively, connects one terminal of an attenuation circuit is to an RF input terminal, connects an input and an... Agent: Stevens, Davis, Miller & Mosher, LLP

20070176684 - Waveform equalizer and information reproducing apparatus therewith: A waveform equalizer includes: a calculation circuit (7a) that permits free setting of the boost factor by which the gain, in a predetermined frequency range, for the input signal by varying the boost factor; and an all-pass filter (7b) that is connected to the stage preceding or following the calculation... Agent: Fish & Richardson P.C.

20070176685 - Extremely low noise v-band amplifier: A high-performance Peltier-cooled single-channel millimeter-wave low-noise amplifier (LNA) capable of operating over an on-orbit operating temperature range of −40° C. to +80° C. with a noise figure on the order of 1.5 dB.... Agent: Gary L. Eastman

20070176686 - Ultra broad-band low noise amplifier utilizing dual feedback technique: This invention relates to a low noise amplifier, used in radio frequency integrated circuit design, especially low noise amplifiers for ultra broad-band wireless communication, comprising at least a transistor of the core circuit of a low noise amplifier structure, a transformer that is implemented on the chip, in order to... Agent: Joseph J. Orlando Bucknam And Archer

20070176687 - High frequency power amplifier: Disclosed is a power amplifier having highly stable and excellent controllability, and having low noise in comparison with conventional power amplifiers. With the power amplifier, a differential amplifier made up of transistors Q1, Q2 is provided in the initial stage thereof, and baluns doubling as inter-stage matching circuits, comprised of... Agent: Miles & Stockbridge PC

20070176688 - Method and apparatus for controlling an output voltage in a power amplifier: Power amplifier (PA) apparatus that includes: a PA device operating at a fundamental frequency and having a maximum operating frequency that is higher than the fundamental frequency, an output current having a fundamental component at the fundamental frequency and a plurality of harmonic components at different harmonic frequencies of the... Agent: Motorola, Inc.