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Class Information
Number: 455/118
Name: Telecommunications > Transmitter > Frequency conversion
Description: Subject matter where a signal is converted from a first frequency to a second frequency.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620378 |
Method and system for frequency up-conversion with modulation embodiments |
Nov. 17, 2009 |
| 7613249 |
Spurious component reduction |
Nov. 3, 2009 |
| 7613433 |
Reducing local oscillation leakage in a radio frequency transmitter |
Nov. 3, 2009 |
| 7606538 |
Mixer circuit and method |
Oct. 20, 2009 |
| 7606535 |
Modular wide-range transceiver |
Oct. 20, 2009 |
| 7590391 |
Digital intermediate frequency transmitter for wireless communication |
Sep. 15, 2009 |
| 7570187 |
Technique for improving modulation performance of translational loop RF transmitters |
Aug. 4, 2009 |
| 7570919 |
Transmitter, receiver, and radio communications system and method |
Aug. 4, 2009 |
| 7558538 |
Quadrature sub-harmonic frequency up-converter |
Jul. 7, 2009 |
| 7558556 |
Adaptive radio transceiver with subsampling mixers |
Jul. 7, 2009 |
| 7555271 |
Single side band transmissions |
Jun. 30, 2009 |
| 7548726 |
Adaptive radio transceiver with a bandpass filter |
Jun. 16, 2009 |
| 7546096 |
Frequency up-conversion using a harmonic generation and extraction module |
Jun. 9, 2009 |
| 7542740 |
Power amplifier output switch using hybrid combiner |
Jun. 2, 2009 |
| 7542739 |
Up converter mixer linearization improvement |
Jun. 2, 2009 |
| 7542735 |
Multi-octave differential upconverter |
Jun. 2, 2009 |
| 7539613 |
Device for recovering missing frequency components |
May. 26, 2009 |
| 7519335 |
Digital modulation signal mixer |
Apr. 14, 2009 |
| 7519100 |
Method and device for transmission/reception with frequency hopping |
Apr. 14, 2009 |
| 7515880 |
Variable gain frequency multiplier |
Apr. 7, 2009 |
| 7512385 |
GPS RF front end IC with programmable frequency synthesizer for use in wireless phones |
Mar. 31, 2009 |
| 7512378 |
Adaptive radio transceiver |
Mar. 31, 2009 |
| 7505750 |
Mixer transconductance in RF transceiver |
Mar. 17, 2009 |
| 7499680 |
Translational loop transmitter architecture employing channel power ratio measurements for modulation accuracy calibration |
Mar. 3, 2009 |
| 7496343 |
Programmable mixer for reducing local oscillator feedthrough and radio applications thereof |
Feb. 24, 2009 |
| 7489954 |
Wireless communication apparatus and method of wireless communication |
Feb. 10, 2009 |
| 7483678 |
Single chip GSM/EDGE transceiver architecture with closed loop power control |
Jan. 27, 2009 |
| 7463868 |
Adaptive radio transceiver with offset PLL with subsampling mixers |
Dec. 9, 2008 |
| 7450912 |
Transmitter and transceiver |
Nov. 11, 2008 |
| 7439895 |
Linear amplifier using digital feedforward |
Oct. 21, 2008 |
| 7440732 |
Apparatus and method of local oscillator leakage cancellation |
Oct. 21, 2008 |
| 7428308 |
Transmitting and reproducing stereophonic audio signals |
Sep. 23, 2008 |
| 7424274 |
Digital transmitter and method |
Sep. 9, 2008 |
| 7424064 |
Polar transmitter with digital to RF converter |
Sep. 9, 2008 |
| 7421250 |
Radio frequency integrated circuit |
Sep. 2, 2008 |
| 7409196 |
RFIC transmit power control |
Aug. 5, 2008 |
| 7409192 |
Method and apparatus for frequency synthesis in direct-conversion transmitters |
Aug. 5, 2008 |
| 7398074 |
Integrated transceiver circuit with low interference production and sensitivity |
Jul. 8, 2008 |
| 7395035 |
Up-conversion mixing system with high carrier suppression |
Jul. 1, 2008 |
| 7394880 |
Method and apparatus for simulating radio channel |
Jul. 1, 2008 |
| 7389087 |
Adaptive radio transceiver with filtering |
Jun. 17, 2008 |
| 7386283 |
Translational loop RF transmitter architecture for GSM radio |
Jun. 10, 2008 |
| 7386329 |
Wireless communication apparatus and method of wireless communication |
Jun. 10, 2008 |
| 7383026 |
Wideband retroreflector |
Jun. 3, 2008 |
| 7383032 |
Cellular phone and method for receiving and transmitting signals of different frequency bands |
Jun. 3, 2008 |
| 7376399 |
Weighted mixing circuitry for quadrature processing in communication systems |
May. 20, 2008 |
| 7373132 |
High frequency signal receiver |
May. 13, 2008 |
| 7366485 |
Multimode wireless transmitter and a portable wireless device using the same |
Apr. 29, 2008 |
| 7359678 |
Signal processing semiconductor integrated circuit device and wireless communication system |
Apr. 15, 2008 |
| 7359684 |
Wireless communication system with variable intermediate frequency transmitter |
Apr. 15, 2008 |
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