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Class Information
Number: 455/339
Name: Telecommunications > Receiver or analog modulated signal frequency converter > With particular receiver circuit > Coupling or decoupling between stages > Band pass filter
Description: Systems wherein the coupling means comprises a band pass filter.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6643503 |
Wireless speaker for radio communication device |
Nov. 4, 2003 |
| 6643502 |
Multi-standard reception |
Nov. 4, 2003 |
| 6628960 |
Multi-mode radio receiver |
Sep. 30, 2003 |
| 6611569 |
Down/up-conversion apparatus and method |
Aug. 26, 2003 |
| 6578202 |
Signal splitter for cable TV |
Jun. 10, 2003 |
| 6542725 |
Amplifier circuit arrangement for alternatively processing a digital or an analog signal |
Apr. 1, 2003 |
| 6535722 |
Television tuner employing micro-electro-mechanically-switched tuning matrix |
Mar. 18, 2003 |
| 6445735 |
Switched bandwidth digital filters with reduced transients during switching |
Sep. 3, 2002 |
| 6442382 |
Filter switching system and method |
Aug. 27, 2002 |
| 6392592 |
Hand held car locator |
May. 21, 2002 |
| 6377788 |
Tunable filter in radio receiver |
Apr. 23, 2002 |
| 6347222 |
Tuning method and transceiver unit |
Feb. 12, 2002 |
| 6334060 |
Multi-channel or split-frequency, low frequency, telemetry circuit and method between transmitters and receivers |
Dec. 25, 2001 |
| 6332083 |
Apparatus and associated method, for operating on receive signals received at a receiver |
Dec. 18, 2001 |
| 6298224 |
Multiple frequency band receiver |
Oct. 2, 2001 |
| 6266522 |
Apparatus and methods for tuning bandpass filters |
Jul. 24, 2001 |
| 6263195 |
Wideband parallel processing digital tuner |
Jul. 17, 2001 |
| 6208850 |
Direct conversion receiver per-selection |
Mar. 27, 2001 |
| 6177964 |
Broadband integrated television tuner |
Jan. 23, 2001 |
| 6134425 |
Digital module RF section |
Oct. 17, 2000 |
| 6122404 |
Visible stokes polarimetric imager |
Sep. 19, 2000 |
| 6094564 |
Mobile communication apparatus operable in different formats and pairing I-F band pass filter type with I-F amplifier characteristics |
Jul. 25, 2000 |
| 6088569 |
Method and apparatus for receiving a plurality of signals having different frequency bandwidths |
Jul. 11, 2000 |
| 6064866 |
Switchable bandpass filter for a multiband tuner |
May. 16, 2000 |
| 6029058 |
Spectrum control for direct conversion radio frequency reception |
Feb. 22, 2000 |
| 6029052 |
Multiple-mode direct conversion receiver |
Feb. 22, 2000 |
| 6020911 |
Filtering device for treating a plurality of channels in a television signal cable distribution system |
Feb. 1, 2000 |
| 5963842 |
Satellite broadcasting receiving tuner |
Oct. 5, 1999 |
| 5963857 |
Article comprising a micro-machined filter |
Oct. 5, 1999 |
| 5926752 |
Apparatus and method for remote convenience message transmission and control with a tunable filter receiver |
Jul. 20, 1999 |
| 5918168 |
Double super tuner |
Jun. 29, 1999 |
| 5893025 |
CATV converter for receiving both analog and digital signals |
Apr. 6, 1999 |
| 5878332 |
Multiple frequency RF transceiver |
Mar. 2, 1999 |
| 5802464 |
Broadcast or communications receiver including ceramic filter, intermediate frequency amplifier and passive, non-inductive band-pass filters |
Sep. 1, 1998 |
| 5758276 |
Double super-heterodyne receiver with low-pass and high-pass filters controlled by respective switching devices |
May. 26, 1998 |
| 5737035 |
Highly integrated television tuner on a single microcircuit |
Apr. 7, 1998 |
| 5729755 |
Process for transmitting data in a data processing system with distributed computer nodes, communicating via a serial data bus, between which data messages are exchanged, tested for acceptance |
Mar. 17, 1998 |
| 5697087 |
Semiconductor device with a filter formed of 3-element series-and-parallel resonators |
Dec. 9, 1997 |
| 5649313 |
Television receiver with saw filter coupling utilizing a series resonance network and additional resistor |
Jul. 15, 1997 |
| 5640698 |
Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion |
Jun. 17, 1997 |
| 5630220 |
Automatic gain control circuit for radio communication apparatus |
May. 13, 1997 |
| 5612666 |
Wireless audible indications system |
Mar. 18, 1997 |
| 5584063 |
If filter arrangement for FM reception signals |
Dec. 10, 1996 |
| 5566365 |
Active filter circuit and portable telephone apparatus |
Oct. 15, 1996 |
| 5564093 |
Frequency modulation receiving apparatus having two intermediate-frequency band pass filters |
Oct. 8, 1996 |
| 5557642 |
Direct conversion receiver for multiple protocols |
Sep. 17, 1996 |
| 5548839 |
Wide band radio-frequency converter having multiple use of intermediate frequency translators |
Aug. 20, 1996 |
| 5499394 |
Filter switching circuit |
Mar. 12, 1996 |
| 5493721 |
Receiver for a digital radio signal |
Feb. 20, 1996 |
| 5465410 |
Method and apparatus for automatic frequency and bandwidth control |
Nov. 7, 1995 |
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