Modulators inventions 04/09

20090108951 - Methods and apparatus for reducing peak-to-rms amplitude ratio in communication signals: A pulse amplitude modulation (PAM) signal generator that injects a copy of a pulse into the PAM baseband signal prior to frequency upconversion and power amplification. The pulse comprises a function of, or an extra copy of, a pulse in the PAM baseband signal. The pulse injector analyzes the PAM... Agent: Patent Law Professionals

20090108952 - Distortion compensating circuit: A distortion compensating circuit is provided in which, in the polar modulation system, while suppressing increase of compensation data and increase of the circuit scale, a modulated signal can be correctly expressed, or low-distortion characteristics of a power amplifier can be realized. Based on a steady characteristic compensating circuit 11... Agent: Pearne & Gordon LLP

20090102573 - Modulation circuit: A modulation circuit is provided that generates an output signal obtained by modulating an input signal with a local signal and includes a local input section that receives the local signal and generates the local signal and an inverted local signal obtained by inverting the local signal, a signal input... Agent: Jianq Chyun Intellectual Property Office

20090096543 - Multi-format all-digital modulator and method: A method, system and digital modulator for modulation are provided The modulator includes a dividing mechanism for dividing a reference clock by a divide value to produce a modulated signal associated with at least one input data, and a control unit for providing at least one divide sequence to the... Agent: Pearne & Gordon LLP

20090096544 - Pwm switching direct voltage circuit: The present invention relates to a pulse width modulation switching direct voltage circuit. The PWM circuit comprises a first passive device, a second passive device and a third passive device which they are connected orderly in series, and a fourth passive device which is connected in parallel between the first... Agent: Bacon & Thomas, PLLC

20090096545 - Dynamic frequency tuning of electric and magnetic metamaterial response: A geometrically modifiable resonator is comprised of a resonator disposed on a substrate, and a means for geometrically modifying the resonator. The geometrically modifiable resonator can achieve active optical and/or electronic control of the frequency response in metamaterials and/or frequency selective surfaces, potentially with sub-picosecond response times. Additionally, the methods... Agent: John P. O'banion O'banion & Ritchey LLP

20090096546 - Modulator for radio-frequency signals: A modulator for radio-frequency signals designed an entirely digital modulator has two mixer stages connected in series. The first mixer stage implements with a relatively low first sample rate a frequency mixing with a first oscillator frequency that is adjustable with high precision. The second mixer stage implements a frequency... Agent: Schiff Hardin, LLP Patent Department

20090091400 - Method and apparatus for generating dynamically varying time hopping sequences for uwb signals: A method and apparatus modulate a polarity of a burst of pulses of the impulse radio signal using a first pseudo noise sequence generated by a shift register and a position of the burst of pulses using a second pseudo noise sequence generated by the shift register.... Agent: Mitsubishi Electric Research Laboratories, Inc.

20090085686 - Integrated binary phase shift keying with silicon mems resonators: A modulator includes a micro-electromechanical resonator device configured to receive an input signal and generate two output signals in response thereto, wherein the two signals having a predetermined phase relationship therebetween. The modulator further includes a switching system configured to selectively pass one of the two signals to an output... Agent: Eschweiler & Associates LLC

20090085687 - Modulating circuit: There are included a first quadrature modulation part (5) that divides an input signal into an I signal and a Q signal having a phase orthogonal to the phase thereof and uses a baseband frequency to perform frequency conversions of the I and Q signals, thereby performing a quadrature modulation;... Agent: Connolly Bove Lodge & Hutz LLP