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Class Information
Number: 455/323
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > Particular frequency conversion structure or circuitry
Description: Subject matter including significant details of the frequency modifying or conversion means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619462 |
Unpowered switch and bleeder circuit |
Nov. 17, 2009 |
| 7620381 |
Tri-state chopper for frequency conversion |
Nov. 17, 2009 |
| 7620382 |
Frequency converter capable of preventing level of intermediate frequency signal from lowering due to rise in temperature |
Nov. 17, 2009 |
| 7616938 |
Mixer offset cancellation without generating I/Q imbalance |
Nov. 10, 2009 |
| 7616063 |
Frequency synthesizer using a phase-locked loop and single side band mixer |
Nov. 10, 2009 |
| 7616937 |
Subharmonic mixer capable of reducing noise and enhancing gain and linearlty |
Nov. 10, 2009 |
| 7613434 |
Multiplexer and wireless receiver |
Nov. 3, 2009 |
| 7609776 |
Quadrature frequency changer, tuner and modulator |
Oct. 27, 2009 |
| 7606546 |
Variable frequency clock generator for synchronizing data rates between clock domains in radio frequency wireless communication systems |
Oct. 20, 2009 |
| 7606332 |
Variable signal delaying circuit, quadrature frequency converter and radio frequency tuner |
Oct. 20, 2009 |
| 7606549 |
Selective channel tuner and tuning method |
Oct. 20, 2009 |
| 7603099 |
Direct-conversion receiver system and method with quadrature balancing and DC offset removal |
Oct. 13, 2009 |
| 7603089 |
Methods and apparatus for conditioning low-magnitude events in communications signals |
Oct. 13, 2009 |
| 7599678 |
Processor for a passive ranger |
Oct. 6, 2009 |
| 7596363 |
Method and system for measuring receiver mixer IQ mismatch |
Sep. 29, 2009 |
| 7587224 |
Reconfigurable topology for receiver front ends |
Sep. 8, 2009 |
| 7587192 |
Balanced mixer with calibration of load impedances |
Sep. 8, 2009 |
| 7587187 |
Ultra wide band, differential input/output, high frequency active mixer in an integrated circuit |
Sep. 8, 2009 |
| 7587010 |
Complex filter circuit and receiver circuit |
Sep. 8, 2009 |
| 7583947 |
Method and system for single sideband mixing receiver architecture for improving signal quality |
Sep. 1, 2009 |
| 7580684 |
Programmable radio transceiver |
Aug. 25, 2009 |
| 7580693 |
Passive reflection mixer |
Aug. 25, 2009 |
| 7577418 |
Sub-harmonic mixer and down converter with the same |
Aug. 18, 2009 |
| 7574190 |
Signal-processing electronics |
Aug. 11, 2009 |
| 7558556 |
Adaptive radio transceiver with subsampling mixers |
Jul. 7, 2009 |
| 7558351 |
Super harmonic filter and method of filtering frequency components from a signal |
Jul. 7, 2009 |
| 7557647 |
Heterodyne receiver using resonant structures |
Jul. 7, 2009 |
| 7555263 |
Adaptive radio transceiver |
Jun. 30, 2009 |
| 7551910 |
Translation and filtering techniques for wireless receivers |
Jun. 23, 2009 |
| 7548742 |
Tuner for radio frequency receivers and associated method |
Jun. 16, 2009 |
| 7548734 |
Multi-band RF receiver |
Jun. 16, 2009 |
| 7546110 |
Low power highly linear RF downconverter |
Jun. 9, 2009 |
| 7546109 |
Gilbert mixers with improved isolation and methods therefor |
Jun. 9, 2009 |
| 7546102 |
Dual band frequency synthesizer |
Jun. 9, 2009 |
| 7542742 |
Down converter with shielding structure |
Jun. 2, 2009 |
| 7542751 |
Down-converter and calibration method thereof |
Jun. 2, 2009 |
| 7539474 |
DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
May. 26, 2009 |
| 7536166 |
Monolithically integrated circuit |
May. 19, 2009 |
| 7529529 |
Low noise, high-linearity RF front end receiver |
May. 5, 2009 |
| 7522899 |
Image rejection scheme for receivers |
Apr. 21, 2009 |
| 7519100 |
Method and device for transmission/reception with frequency hopping |
Apr. 14, 2009 |
| 7519344 |
Bandpass amplifier, method, and system |
Apr. 14, 2009 |
| 7512378 |
Adaptive radio transceiver |
Mar. 31, 2009 |
| 7512394 |
Wideband up-conversion mixer |
Mar. 31, 2009 |
| 7512393 |
Downconverting mixer |
Mar. 31, 2009 |
| 7512083 |
Single chip multi-antenna wireless data processor |
Mar. 31, 2009 |
| 7509110 |
High-order harmonic rejection mixer using multiple LO phases |
Mar. 24, 2009 |
| 7509112 |
Wideband image rejection mixer |
Mar. 24, 2009 |
| 7505750 |
Mixer transconductance in RF transceiver |
Mar. 17, 2009 |
| 7499693 |
Mixer for homodyne RF receiver |
Mar. 3, 2009 |
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