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Class Information
Number: 455/310
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Noise or interference elimination > Internally generated noise or oscillations
Description: Subject matter where the noise or other interference that is eliminated is noise or oscillations which arise from the receiver"s own circuitry (except power supply).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7561864 |
RF receiver with NLMS channel estimator and method therefor |
Jul. 14, 2009 |
| 7496343 |
Programmable mixer for reducing local oscillator feedthrough and radio applications thereof |
Feb. 24, 2009 |
| 7454184 |
DC offset cancellation in a wireless receiver |
Nov. 18, 2008 |
| 7424278 |
Low IF mixer with improved selectivity performance |
Sep. 9, 2008 |
| 7412221 |
Crosstalk reduction method, apparatus, and system |
Aug. 12, 2008 |
| 7336938 |
Phase-alternating mixer with alias and harmonic rejection |
Feb. 26, 2008 |
| 7289167 |
Television tuner including distribution connectors |
Oct. 30, 2007 |
| 7268836 |
Television tuner device generating intermediate-frequency signal free from harmonic interference of reference signal |
Sep. 11, 2007 |
| 7254380 |
Low flicker noise current-folded mixer |
Aug. 7, 2007 |
| 7251468 |
Dynamically matched mixer system with improved in-phase and quadrature (I/Q) balance and second order intercept point (IP2) performance |
Jul. 31, 2007 |
| 7248848 |
Communication apparatus including dual timer units |
Jul. 24, 2007 |
| 7224950 |
Estimating GPS reference frequency drift from PDC-handset VCO-bursts |
May. 29, 2007 |
| 7209767 |
Cellular phone suppressing degradation of receiving sensitivity |
Apr. 24, 2007 |
| 7197329 |
Wireless communication apparatus, cordless telephone, display operation control method, program, and storage medium |
Mar. 27, 2007 |
| 7146199 |
Cordless digital audio headphone |
Dec. 5, 2006 |
| 7133656 |
Direct conversion receiver |
Nov. 7, 2006 |
| 7129854 |
Electronic device with force sensing key |
Oct. 31, 2006 |
| 7129994 |
Television tuner having level of harmonics of oscillation signal suppressed low |
Oct. 31, 2006 |
| 7103342 |
System and method for reducing the effects of clock harmonic frequencies |
Sep. 5, 2006 |
| 7095997 |
Direct-conversion receiver for a communication system using a modulation with non-constant envelope |
Aug. 22, 2006 |
| 7027791 |
Analog baseband signal processing system and method |
Apr. 11, 2006 |
| 6999723 |
System and method for reducing the effects of clock harmonic frequencies |
Feb. 14, 2006 |
| 6999744 |
Measurement of local oscillation leakage in a radio frequency integrated circuit |
Feb. 14, 2006 |
| 6980774 |
Radio frequency integrated circuit |
Dec. 27, 2005 |
| 6970689 |
Programmable mixer for reducing local oscillator feedthrough and radio applications thereof |
Nov. 29, 2005 |
| 6871055 |
Direct conversion receiver, mobile radio equipment using the same, and RF signal receiving method |
Mar. 22, 2005 |
| 6819912 |
Variable frequency switching amplifier and method therefor |
Nov. 16, 2004 |
| 6745019 |
Process and system for reducing leakage of local oscillator |
Jun. 1, 2004 |
| 6738610 |
Detection of noise in a frequency demodulated FM-audio broadcast signal |
May. 18, 2004 |
| 6697613 |
System for canceling internal interference in a receiver |
Feb. 24, 2004 |
| 6697612 |
Receiving section of a telephone |
Feb. 24, 2004 |
| 6678340 |
Apparatus for receiving and processing a radio frequency signal |
Jan. 13, 2004 |
| 6671505 |
Frequency converter |
Dec. 30, 2003 |
| 6577862 |
System and method for providing comfort noise in a mobile communication network |
Jun. 10, 2003 |
| 6535725 |
Interference reduction for direct conversion receivers |
Mar. 18, 2003 |
| 6516187 |
DC offset correction for direct conversion tuner IC |
Feb. 4, 2003 |
| 6505038 |
Method of driving a receiver stage and respective apparatus |
Jan. 7, 2003 |
| 6393266 |
Preprocessor and related frequency translator |
May. 21, 2002 |
| 6381476 |
Portable radio terminal |
Apr. 30, 2002 |
| 6345172 |
Radio system which overcomes signal interference from clock oscillation circuit |
Feb. 5, 2002 |
| 6343211 |
LO cancelling mixer |
Jan. 29, 2002 |
| 6298218 |
Combined advertising and entertainment system network |
Oct. 2, 2001 |
| 6272312 |
Satellite broadcasting receiving tuner which inhibits interference caused by satellite broadcast signals having one octave higher frequency band |
Aug. 7, 2001 |
| 6243569 |
Direct conversion circuit for radio frequency signals |
Jun. 5, 2001 |
| 6192228 |
Method and apparatus for improving the sensitivity of an RF receiver at certain frequencies |
Feb. 20, 2001 |
| 6173161 |
Signal improvement by predistortion/postdistortion programmable converter |
Jan. 9, 2001 |
| 6169889 |
Method and electronic device using random pulse characteristics in digital signals |
Jan. 2, 2001 |
| 6160571 |
Compact cable tuner/transceiver |
Dec. 12, 2000 |
| RE36973 |
Digitally-corrected temperature-compensated crystal oscillator having a correction-suspend control for communications service |
Nov. 28, 2000 |
| 6137888 |
EM interference canceller in an audio amplifier |
Oct. 24, 2000 |
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