| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 10/17/2006 | US7123889 Radio transmitter testing method, radio transmitter and base station |
| 10/17/2006 | US7123888 Variable communication system |
| 10/11/2006 | EP1709732A1 Adjusting circuit |
| 10/10/2006 | US7120402 Method and apparatus for a high performance and high dynamic range baseband power control system |
| 10/10/2006 | US7120202 Wireless communication apparatus |
| 10/10/2006 | US7119939 Phase modulation circuit, test apparatus, and communication system |
| 10/05/2006 | US20060220759 Contactless ic card system |
| 10/03/2006 | US7116956 Power oscillator for control of waveshape and amplitude |
| 10/03/2006 | US7116951 Transmitter circuit and method for modulation distortion compensation |
| 10/03/2006 | US7116948 High-speed signal power detection circuit |
| 09/27/2006 | CN1838525A Modulator |
| 09/26/2006 | US7113754 High frequency signal power detector |
| 09/21/2006 | DE19860097B4 Schaltungseinrichtung, Verfahren zum Bereitstellen eines linearen Leistungsverstärkers und Verwendung einer Schaltungseinrichtung Circuit device, method for providing a linear power amplifier and use of a circuit device |
| 09/21/2006 | DE102005010904A1 Voltage regulator circuit for use in mobile communication device, has control loop with DC/DC converter that is arranged between two supply nodes, where two-point modulation is implemented with converter within control loop by nodes |
| 09/13/2006 | EP1509998B1 Apparatus for detecting the envelope of rf power signals |
| 09/12/2006 | US7107030 Transmitter and a modulator therefor |
| 09/08/2006 | WO2006036158A3 Remote management and analysis techniques in cellular and satellite radio networks |
| 09/07/2006 | US20060199552 Method and system for self-calibrating transmit power |
| 09/07/2006 | US20060198468 Single and multiple sinewave modulation and demodulation techniques employing carrier-zero and carrier-peak data-word start and stop |
| 08/30/2006 | EP1694285A2 A transmitter circuit and method for modulation distortion compensation |
| 08/22/2006 | US7095799 Systems and methods for providing baseband-derived predistortion to increase efficiency of transmitters |
| 08/16/2006 | EP1691481A1 Amplitude modulator |
| 08/15/2006 | US7092682 Electronic circuit, modulation method, information processing device, and information processing method |
| 08/15/2006 | US7092455 Digital VSB transmission system |
| 08/15/2006 | US7089794 Method and apparatus for tracking a resonant frequency |
| 08/10/2006 | WO2005101678A3 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series |
| 08/08/2006 | US7088169 Low-noise, high-linearity analog multiplier |
| 08/03/2006 | US20060172704 Radio communication apparatus and pilot symbol transmission method |
| 08/03/2006 | DE19731012B4 Anordnung zum Erzeugen eines restseitenband-modulierten Videosignals mit Restträger für einen Fernsehsender Arrangement for generating a vestigial sideband modulated video signal with residual carrier for a television |
| 08/03/2006 | DE102005004084A1 Mischstufe und Verfahren zur Mischung von zwei Signalen, die verschiedene Frequenzen besitzen Mixer and method of mixing of two signals having different frequencies |
| 07/27/2006 | DE102005027134B3 Agricultural engine`s e.g. combine harvester, function monitoring method, involves analyzing modulating level of signal and generating another signal, when modulation level exceeds predetermined threshold value |
| 07/26/2006 | EP1495540A4 Return to zero and sampling pulse generating circuits and method for direct digital up conversion |
| 07/06/2006 | WO2005065070A3 Frequency selective transmit signalweighting for multiple antenna communications systems |
| 07/06/2006 | US20060148411 Apparatus and method for transmitting/receiving channel quality information in a communication system |
| 07/06/2006 | US20060148409 Method and circuit arrangement for determing the signal strength in receivers with complex signal processing |
| 07/06/2006 | US20060146954 Carrier tracking loop lock detector |
| 06/29/2006 | US20060141975 Methods and systems for down-converting a signal using a complementary transistor structure |
| 06/29/2006 | US20060141937 Method of test characterization of an analog front end receiver in a communication system |
| 06/29/2006 | US20060140301 E8-VSB reception system, apparatus for generating data attribute and method thereof, and apparatus for channel encoding and method thereof |
| 06/29/2006 | DE19620760B4 Oszillatorschaltung Oscillator circuit |
| 06/27/2006 | US7068983 Method for detecting quadrature modulator carrier leak adjusting point by geometrical analysis/calculation method, carrier leak adjusting method, and quadrature modulation apparatus |
| 06/22/2006 | DE102004046255B3 Schwingkreisanordnung, Verfahren zum Betrieb einer solchen und deren Verwendung Resonant circuit arrangement, method for operating such and the use thereof |
| 06/21/2006 | EP1672801A1 Digital to analog converter |
| 06/21/2006 | EP1671441A2 Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals |
| 06/21/2006 | EP1671394A2 Enhanced holographic communications apparatus and method |
| 06/15/2006 | WO2006063192A1 Systems and methods for continuous-time digital modulation |
| 06/15/2006 | US20060126756 Method for modulating a carrier signal and method for demodulating a modulated carrier signal |
| 06/07/2006 | EP1665709A1 Quadrature modulator which employs four 90-degrees-shifted carriers |
| 06/07/2006 | EP1665519A2 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 06/07/2006 | EP1665462A2 Amplifier power control in frequency hopping applications and methods |
| 06/07/2006 | CN1258901C Carrier modulator used in transmitter or receiver |
| 06/01/2006 | US20060116081 Precision for interference estimation in unsynchronized wireless networks |
| 06/01/2006 | US20060114075 Transmitter and a method of calibrating power in signals output from a transmitter |
| 05/31/2006 | EP1661245A2 Shell type actuator |
| 05/31/2006 | EP1661240A2 Thermal-mechanical signal processing |
| 05/30/2006 | US7054385 Reduction of average-to-minimum power ratio in communications signals |
| 05/25/2006 | US20060109061 System and method for narrow bandwidth amplitude modulation |
| 05/23/2006 | US7050511 In-band adjacent-channel digital audio broadcasting system |
| 05/23/2006 | US7050508 Method and system for frequency up-conversion with a variety of transmitter configurations |
| 05/18/2006 | DE102004054761A1 PIN diode pulse modulator has sums component of output signal of both modulation branches generated by high frequency source in anti-phase to compensate video cross-talk |
| 05/16/2006 | US7046121 Detection of an electric signature of an electromagnetic transponder |
| 05/09/2006 | US7042959 DSP-based variable aperture code generation technique |
| 05/04/2006 | US20060094365 Channel simulator and wireless apparatus evaluation method |
| 05/04/2006 | DE102004019366B4 Schaltungsanordnung für einen breitbandigen Mischer mit Vorverzerrung und hoher Linearität und Verfahren zum breitbandigen Mischen Circuit arrangement for a broadband mixer with predistortion and high linearity and method for mixing broadband |
| 05/03/2006 | CN1767401A Intermodulation distortion improving device and method for wide area communication terminal |
| 05/02/2006 | US7039372 Method and system for frequency up-conversion with modulation embodiments |
| 04/26/2006 | EP1650919A1 Modulation device, demodulation device, modulation method, and demodulation method |
| 04/26/2006 | CN1254093C RF system integrated with RF switch and RF modulation |
| 04/25/2006 | US7035600 Digitally adaptive modulated transmitter |
| 04/20/2006 | US20060084396 Smart tuning AM transmitter |
| 04/18/2006 | US7031673 Wireless communication device |
| 04/13/2006 | WO2005022740A3 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 04/13/2006 | DE102005034878A1 Amplitudenmodulator, Wahlschalter, diese aufweisende Hochfrequenz-Sende-/Empfangsvorrichtung und Radarvorrichtung sowie mit der Radarvorrichtung ausgestattetes Fahrzeug und mit der Radarvorrichtung ausgestattetes kleines Schiff Amplitude modulator, selector switches, these having high-frequency transmitting / receiving apparatus and radar device and equipped with the radar device and vehicle equipped with the radar device small ship |
| 04/11/2006 | US7027784 Method and apparatus for detecting power levels of varying envelope signals |
| 04/11/2006 | US7027524 Method of transmitting and receiving QPSK digital signals |
| 04/04/2006 | US7024167 Method for amplitude modulation of a radio frequency signal, and device therefor |
| 04/04/2006 | US7023292 Polar modulation using amplitude modulated quadrature signals |
| 03/30/2006 | US20060068726 Transmitter and radio communication terminal using the same |
| 03/29/2006 | CN1248473C Transmitter |
| 03/28/2006 | US7019599 Apparatus for continuous phase quadrature amplitude modulation and demodulation |
| 03/23/2006 | US20060063496 Communications signal amplifiers having independent power control and amplitude modulation |
| 03/23/2006 | DE10020933B4 ASK-Modulator und Kommunikationsgerät mit einem ASK-Modulator ASK modulator and communication unit with an ASK modulator |
| 03/16/2006 | US20060055466 Modulator and correction method thereof |
| 03/09/2006 | DE102004040278A1 Amplitudenmodulator, insbesondere für den Mobilfunk und Verfahren zur Modulation eines Signals Amplitude modulator, in particular for mobile radio and methods for modulation of a signal |
| 03/02/2006 | US20060044072 Method and apparatus for providing a modulation current |
| 02/28/2006 | US7006843 Method and apparatus for regulating the power of a transmit amplifier |
| 02/21/2006 | US7003048 Communication arrangement comprising powerful integrated amplitude-modulation means |
| 02/16/2006 | CA2573862A1 System and method for current-mode amplitude modulation |
| 02/14/2006 | US6999735 Digital high frequency power detection circuit |
| 02/09/2006 | WO2006014535A2 Numerical control of sideband energy and modulation compression method for the radio frequency transmission of high speed data |
| 02/08/2006 | EP1623497A1 Method for modulating a carrier signal, and method for demodulating a modulated carrier signal |
| 02/07/2006 | US6996381 Apparatus and method for compensating transmission power in mobile terminal |
| 02/07/2006 | US6996078 Adaptive uplink/downlink timeslot assignment in a hybrid wireless time division multiple access/code division multiple access communication system |
| 02/02/2006 | US20060025087 Power control in telecommunications networks |
| 02/01/2006 | CN1240194C Stereo synthetic coder (MPX) for FM transmission |
| 02/01/2006 | CN1240182C Demodulator for digital audio-frequency amplifier |
| 01/26/2006 | DE10342583B4 Verfahren zur Trägerrestbestimmung in einer einen Vektormodulator umfassenden Anordnung A method for determining residual carrier in a vector modulator arrangement comprising |
| 01/19/2006 | US20060014500 Devices for reducing the dynamic range of signals in transmitters of communication systems |
| 01/17/2006 | US6987434 Non-radiative dielectric waveguide modulator having waveguide type hybrid coupler |
| 01/12/2006 | US20060009170 Numerical control of sideband energy and modulation compression method for the radio frequency transmission of high speed data |