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Class Information
Number: 455/306
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Noise or interference elimination > Using plural separate signal paths > With balancing or neutralizing > Filter in at least one path
Description: Subject matter where at least one signal path offers comparatively little opposition to certain frequencies or to direct current, while blocking or attenuating other frequencies.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7583936 |
Circuit with reduced insertion loss and component comprising one such circuit |
Sep. 1, 2009 |
| 7580528 |
Secure terminal data loader apparatus and method for a mobile platform |
Aug. 25, 2009 |
| 7567533 |
Packet detection system, packet detection device, and method for receiving packets |
Jul. 28, 2009 |
| 7555076 |
Modular device for multiple reception of a modulated signal |
Jun. 30, 2009 |
| 7551918 |
Mobile device control of mobile television broadcast signals to multiple destinations |
Jun. 23, 2009 |
| 7546110 |
Low power highly linear RF downconverter |
Jun. 9, 2009 |
| 7526254 |
Digital radio front end with minimized IF signal path |
Apr. 28, 2009 |
| 7522886 |
Radio frequency transceivers |
Apr. 21, 2009 |
| 7512391 |
Self-aligning resonator filter circuit and wideband tuner circuit incorporating same |
Mar. 31, 2009 |
| 7502604 |
Wireless environment method and apparatus |
Mar. 10, 2009 |
| 7493078 |
Antenna assembly for satellite and wireless services |
Feb. 17, 2009 |
| 7450924 |
Interference cancellation and receive diversity for single-valued modulation receivers |
Nov. 11, 2008 |
| 7444129 |
Comb-line wireless filter |
Oct. 28, 2008 |
| 7418248 |
Signal reception device, signal transmission device, radio communication system, and signal reception method |
Aug. 26, 2008 |
| 7388860 |
Network communication apparatus, communication system and communication method |
Jun. 17, 2008 |
| 7369836 |
Adjacent interference removal device |
May. 6, 2008 |
| 7363063 |
Mobile wireless communications device with reduced interference from the keyboard into the radio receiver |
Apr. 22, 2008 |
| 7346326 |
Mobile communication terminal with equalizer function |
Mar. 18, 2008 |
| 7346173 |
Method and circuit assemblage for influencing the treble reproduction of an audio signal |
Mar. 18, 2008 |
| 7315730 |
Architecture for a receiver front end having dual output low noise amplifier driving separate pre-selectors coupled to a transformer for single ended output |
Jan. 1, 2008 |
| 7233780 |
Method and apparatus for performing DC offset cancellation in a receiver |
Jun. 19, 2007 |
| 7231189 |
Transmit and/or receive channel communication system with switchably coupled multiple filtering components |
Jun. 12, 2007 |
| 7228110 |
Low cost high frequency device having compact mounting area, high frequency amplification method, wireless communication device and mobile telephone including low cost and high frequency circu |
Jun. 5, 2007 |
| 7224726 |
System and method for terrestrial high-definition television reception |
May. 29, 2007 |
| 7200377 |
Method and system for multi-channel RF digitization with analog selectivity |
Apr. 3, 2007 |
| 7197293 |
Absorbing sum signal energy in a mixer |
Mar. 27, 2007 |
| 7181184 |
Band edge amplitude reduction system and method |
Feb. 20, 2007 |
| 7181185 |
Apparatus and method for performing channel estimations using non-linear filter |
Feb. 20, 2007 |
| 7171162 |
Method and apparatus for frequency estimation using iterative filtering in a GSM communications system |
Jan. 30, 2007 |
| 7155193 |
Multi-channel filtering system for transceiver architectures |
Dec. 26, 2006 |
| 7151916 |
Method of receiving a signal and a receiver |
Dec. 19, 2006 |
| 7127226 |
Twin-T dual notch filter |
Oct. 24, 2006 |
| 7116966 |
Transmitting/receiving filter device and communication device |
Oct. 3, 2006 |
| 7072630 |
Adaptive data rate determination for a reverse link communication in a communication system |
Jul. 4, 2006 |
| 7054606 |
Digitally calibrated narrowband filter with analog channel compensation |
May. 30, 2006 |
| 7043026 |
Method for removing AM neighboring interference and a circuit for the same |
May. 9, 2006 |
| 6983136 |
Directly tuned filter and method of directly tuning a filter |
Jan. 3, 2006 |
| 6975847 |
Filtering of a receive frequency band |
Dec. 13, 2005 |
| 6968172 |
DC offset cancel circuit |
Nov. 22, 2005 |
| 6959206 |
Dual-duplexed, tower-top front-end for a radio transceiver system |
Oct. 25, 2005 |
| 6957052 |
Transmission system, receiver, circuit, and method for removing interference components in a signal |
Oct. 18, 2005 |
| 6957054 |
Radio receiver having a variable bandwidth IF filter and method therefor |
Oct. 18, 2005 |
| 6947718 |
Deviation compensation apparatus |
Sep. 20, 2005 |
| 6944245 |
Multi-pass interference reduction in a GSM communication system |
Sep. 13, 2005 |
| 6937871 |
Anti-demodulator circuit, filtering device and demodulator circuit |
Aug. 30, 2005 |
| 6922554 |
Method for implementing a transceiver and a transceiver |
Jul. 26, 2005 |
| 6898419 |
Remotely adjustable bandpass filter |
May. 24, 2005 |
| 6895238 |
Method for providing entertainment to a portable device |
May. 17, 2005 |
| 6885855 |
High frequency amplification circuit |
Apr. 26, 2005 |
| 6885752 |
Hearing aid device incorporating signal processing techniques |
Apr. 26, 2005 |
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