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Class Information
Number: 455/84
Name: Telecommunications > Transmitter and receiver at same station (e.g., transceiver) > With a common signal processing stage
Description: Subject matter having an active element which performs a signal processing or generating function in the transmitter portion of the apparatus during signal transmission and in the receiver portion of the apparatus during signal reception.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5924021 |
Frequency conversion circuit and method for millimeter wave radio |
Jul. 13, 1999 |
| 5911116 |
Transmitting-receiving switch-over device complete with semiconductors |
Jun. 8, 1999 |
| 5903820 |
Radio communications transceiver with integrated filter, antenna switch, directional coupler and active components |
May. 11, 1999 |
| 5901344 |
Method and apparatus for improved zero intermediate frequency receiver latency |
May. 4, 1999 |
| 5887267 |
Bus arbitrators for common local oscillators in cellular radiotelephone base stations |
Mar. 23, 1999 |
| 5878332 |
Multiple frequency RF transceiver |
Mar. 2, 1999 |
| 5850187 |
Integrated electronic tag reader and wireless communication link |
Dec. 15, 1998 |
| 5844939 |
Low-cost phaselocked local oscillator for millimeter wave transceivers |
Dec. 1, 1998 |
| 5822704 |
Mobile radio unit for use in dual-mode cellular communications system |
Oct. 13, 1998 |
| 5819165 |
System for regulating the power output of and linearizing the transmission signal from a radio transmitter |
Oct. 6, 1998 |
| 5778306 |
Low loss high frequency transmitting/receiving switching module |
Jul. 7, 1998 |
| 5768691 |
Antenna switching circuits for radio telephones |
Jun. 16, 1998 |
| 5768692 |
Transmission and reception matching method for a cordless communication apparatus and apparatus thereof |
Jun. 16, 1998 |
| 5764700 |
Digital radio link system and radio link terminal |
Jun. 9, 1998 |
| 5732330 |
Dual band transceiver |
Mar. 24, 1998 |
| 5722040 |
Method and apparatus of frequency generation for use with digital cordless telephones |
Feb. 24, 1998 |
| 5706310 |
Wide bandwidth loop in a frequency shift keying (FSK) system |
Jan. 6, 1998 |
| 5701594 |
Transmitter/receiver for a TDMA system using common IF SAW filter |
Dec. 23, 1997 |
| 5694419 |
Shared resource modulator-demodulator circuits for use with vestigial sideband signals |
Dec. 2, 1997 |
| 5648985 |
Universal radio architecture for low-tier personal communication system |
Jul. 15, 1997 |
| 5649308 |
Multiformat auto-handoff communications handset |
Jul. 15, 1997 |
| 5640688 |
Tuner and splitter-modulator circuit having a common quartz crystal |
Jun. 17, 1997 |
| 5633862 |
DTMF signal transmission method in single frequency simultaneous transmitting and receiving system and single frequency simultaneous transmitting and receiving system transceiver capable of tr |
May. 27, 1997 |
| 5630216 |
Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer |
May. 13, 1997 |
| 5619528 |
High speed teleconference system |
Apr. 8, 1997 |
| 5604470 |
Duplexer having transmit and receive sections mounted on a single substrate |
Feb. 18, 1997 |
| 5603099 |
Transceiver for preventing the degradation of reception sensitivity and modulation accuracy of a transmitted signal when an external reference signal incorporates noise |
Feb. 11, 1997 |
| 5603113 |
Automatic gain control circuit for both receiver and transmitter adjustable amplifiers including a linear signal level detector with DC blocking, DC adding, and AC removing components |
Feb. 11, 1997 |
| 5590413 |
Radio transceiver having shared modulation and demodulation mixer circuits |
Dec. 31, 1996 |
| 5584065 |
Interference cancellation system employing an I/Q quadrature rotator |
Dec. 10, 1996 |
| 5566204 |
Fast acquisition clock recovery system |
Oct. 15, 1996 |
| 5566360 |
Transmitter/receiver configuration for higher frequencies |
Oct. 15, 1996 |
| 5561848 |
Two way paging system with answer-back function |
Oct. 1, 1996 |
| 5535432 |
Dual-mode satellite/cellular phone with a frequency synthesizer |
Jul. 9, 1996 |
| 5493698 |
Radio apparatus for simulataneously transmitting and receiving signals using a simple frequency |
Feb. 20, 1996 |
| 5493691 |
Oscillator-shuttle-circuit (OSC) networks for conditioning energy in higher-order symmetry algebraic topological forms and RF phase conjugation |
Feb. 20, 1996 |
| 5490275 |
Virtual radio interface and radio operating system for a communication device |
Feb. 6, 1996 |
| 5471654 |
Transmitting/receiving unit having automatic gain control system with temperature compensation |
Nov. 28, 1995 |
| 5465409 |
Radio architecture with dual frequency source selection |
Nov. 7, 1995 |
| 5444863 |
Radio communication apparatus having common circuits usable by transmitter and receiver systems |
Aug. 22, 1995 |
| 5444864 |
Method and apparatus for cancelling in-band energy leakage from transmitter to receiver |
Aug. 22, 1995 |
| 5442811 |
Loop testable radio transmitters/receivers |
Aug. 15, 1995 |
| 5428831 |
Signal path length correlator and method and an interference cancellation system using the same |
Jun. 27, 1995 |
| 5355363 |
Voice transmission method and apparatus in duplex radio system |
Oct. 11, 1994 |
| 5303394 |
Feedback stabilized Q multiplier filter circuit |
Apr. 12, 1994 |
| 5296762 |
Bidirectional microwave amplifier apparatus |
Mar. 22, 1994 |
| 5280633 |
Active antenna for two-way transmission |
Jan. 18, 1994 |
| 5251232 |
Radio communication apparatus |
Oct. 5, 1993 |
| 5237570 |
Prioritized data transfer method and apparatus for a radiotelephone peripheral |
Aug. 17, 1993 |
| 5230089 |
Automated voice operated transmitter control |
Jul. 20, 1993 |
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