| Patents for H04B 1 - Details of transmission systems, not covered by a single one of groups; Details of transmission systems not characterised by the medium used for transmission (188,568) |
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| 06/19/1997 | WO1997022234A2 Housing with a shielding function for radio equipment |
| 06/19/1997 | WO1997022185A2 Re-orthogonalization of wideband cdma signals |
| 06/19/1997 | WO1997022183A2 A logarithmic level detector and a radio receiver |
| 06/19/1997 | WO1997022094A1 User selectable receiver addresses for wireless communication systems |
| 06/19/1997 | WO1997014049A3 Gps receiver and method for processing gps signals |
| 06/19/1997 | DE19547191A1 Antenne für Handfunk-Sprechgerät Antenna for walkie-talkie |
| 06/19/1997 | DE19547093A1 Circuit for improvement of noise immunity of audio signal |
| 06/19/1997 | CA2229490A1 User selectable receiver addresses for wireless communication systems |
| 06/18/1997 | EP0779726A2 Digital Communication Apparatus |
| 06/18/1997 | EP0779707A1 RF filter arrangement with image trap |
| 06/18/1997 | EP0779706A2 Circuitry for improving signal to noise ratio |
| 06/18/1997 | EP0779693A1 A charging battery structure for hand phone |
| 06/18/1997 | EP0779520A2 Enhanced uplink modulated backscatter system |
| 06/18/1997 | EP0779518A1 Method and circuit of reception of satellite positioning signals with elimination of multipath errors |
| 06/18/1997 | EP0779196A1 Cab signaling apparatus and method |
| 06/18/1997 | EP0779001A1 Reception method and base station receiver |
| 06/18/1997 | EP0779000A1 Code acquisition in a cdma communication system using multiple walsh channels |
| 06/18/1997 | EP0778995A1 Receiver with quadrature decimation stage, method of processing digital signals |
| 06/18/1997 | EP0778994A2 Tunable crystal oscillator with harmonic output |
| 06/18/1997 | EP0629326A4 Housing assembly for a wireless communication device. |
| 06/18/1997 | EP0611516B1 Process for reducing data in the transmission and/or storage of digital signals from several dependent channels |
| 06/18/1997 | CN2256610Y Background noise silencer for voice receiving system |
| 06/18/1997 | CN1152249A Mobile communication system capable of effectively carrying out hand-over control |
| 06/18/1997 | CN1152220A Mobile station without transmission/reception duplexer |
| 06/18/1997 | CN1152219A Character reception display device and method of radio paging receiver |
| 06/18/1997 | CN1152218A Filter device and dual-band system in which filter device is used |
| 06/18/1997 | CN1152216A Digital data encoding apparatus and method thereof |
| 06/18/1997 | CN1152214A Tuner circuit having local oscillator circuit including coaxial resonator |
| 06/18/1997 | CN1152211A Radiotelephone communication unit and high-frequency power amplifier therewith |
| 06/18/1997 | CN1152195A Antenna device |
| 06/18/1997 | CN1152180A External button switch-installed structure |
| 06/17/1997 | US5640698 Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion |
| 06/17/1997 | US5640697 Wideband multiple conversion receiver system with means for avoiding receiver spurs by combined switching of multiple local oscillator frequencies |
| 06/17/1997 | US5640696 Automatic station selecting and receiving apparatus and automatic station selecting and receiving method |
| 06/17/1997 | US5640694 Integrated RF system with segmented frequency conversion |
| 06/17/1997 | US5640693 Transmitter for pulsed electronic article surveillance systems |
| 06/17/1997 | US5640692 Transmission system for the transmit part of a terminal associated with a digital mobile radio installation |
| 06/17/1997 | US5640691 For cellular telephone systems |
| 06/17/1997 | US5640690 Telephone device |
| 06/17/1997 | US5640689 Communications apparatus with antenna switching based on antenna rotation |
| 06/17/1997 | US5640686 Radio communication device capable of communication in a plurality of communication systems |
| 06/17/1997 | US5640685 Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit |
| 06/17/1997 | US5640684 Radio data communication system comprising a common base radio station and handy radio terminals |
| 06/17/1997 | US5640683 Modulated backscatter wireless communication system having an extended range |
| 06/17/1997 | US5640674 Three-cell wireless communication system |
| 06/17/1997 | US5640486 Encoding, decoding and compression of audio-type data using reference coefficients located within a band a coefficients |
| 06/17/1997 | US5640432 Co-channel interference suppression system |
| 06/17/1997 | US5640430 In a communication unit |
| 06/17/1997 | US5640419 Covert communication system |
| 06/17/1997 | US5640417 QAM detector which compensates for received symbol distortion induced by a cellular base station |
| 06/17/1997 | US5640416 Digital downconverter/despreader for direct sequence spread spectrum communications system |
| 06/17/1997 | US5640415 Bit error performance of a frequency hopping, radio communication system |
| 06/17/1997 | US5640392 Signal receiving apparatus |
| 06/17/1997 | US5640301 System for adapting a personal computer for radio communication |
| 06/17/1997 | US5640140 Alarm processing apparatus |
| 06/17/1997 | US5640129 Switching RF generator and modulator |
| 06/17/1997 | US5640126 FM demodulation and frequency tuning for a phase-locked loop |
| 06/17/1997 | CA2061366C Compression of signals for perceptual quality |
| 06/15/1997 | CA2165235A1 Contactless electronic transpoder with printed loop antenna circuit |
| 06/12/1997 | WO1997021294A2 Cellular communication system with dynamically modified data transmission parameters |
| 06/12/1997 | WO1997021293A1 Post-compression hidden data transport |
| 06/12/1997 | WO1997021292A2 A multiuser detector for code division multiple access systems |
| 06/12/1997 | WO1997021279A1 Multi-media copy management system |
| 06/12/1997 | WO1997021277A1 Method and device for reducing rf transmission interference and use thereof in an interactive television network |
| 06/12/1997 | WO1997015997A3 A system for transferring data in re-assignable groups, a transmitter and a receiver for use in such a system, and a method for transferring, transmitting and receiving such data, and a signal comprising such data |
| 06/12/1997 | WO1997013349A3 Receiver architecture for receiving angle-modulated/scanned carrier signals of different frequency |
| 06/12/1997 | DE19650524A1 Double tuning circuit for TV tuner |
| 06/12/1997 | DE19545659A1 SMPS mains adaptor e.g. for normal and standby operation of TV and video-recorders |
| 06/12/1997 | DE19545224A1 Radiation protection device for mobile telephone |
| 06/12/1997 | CA2210792A1 Cellular communication system with dynamically modified data transmission parameters |
| 06/11/1997 | EP0778680A1 Allocating speech items to mobile units communicating on a direct mode channel |
| 06/11/1997 | EP0778678A1 Differential receiver for direct sequence spread spectrum signals |
| 06/11/1997 | EP0778677A1 Digital circuit for differential receiver of direct sequence spread spectrum signals |
| 06/11/1997 | EP0778667A1 Demodulator circuit using gyrator circuit |
| 06/11/1997 | EP0777939A1 Aerial switch for wireless aerial diversity telecommunications devices with two aerials |
| 06/11/1997 | EP0691049B1 Method for deriving a quality signal dependent on the quality of a received multiplex signal |
| 06/11/1997 | EP0687375B1 Loop powered process control transmitter |
| 06/11/1997 | EP0425606B1 Mixed modulation level communication system |
| 06/11/1997 | CN1151808A Spread-spectrum changeable base station |
| 06/11/1997 | CN1151656A Receiver having analog and digital video modes and receiving method thereof |
| 06/11/1997 | CN1151640A Method of controlling communications, and electronic device |
| 06/10/1997 | US5638451 Transmission and storage of multi-channel audio-signals when using bit rate-reducing coding methods |
| 06/10/1997 | US5638405 Dual-mode baseband controller for radio-frequency interfaces relating to digital cordless telephones |
| 06/10/1997 | US5638376 Code division multiplex signal receiving method |
| 06/10/1997 | US5638362 Correlation detector and communication apparatus |
| 06/10/1997 | US5638358 Protection switching system having impedance matching circuits |
| 06/10/1997 | US5638311 Filter coefficient estimation apparatus |
| 06/10/1997 | US5638141 Broadcast signal receiver having a low-noise amplifier inserted before a tuner |
| 06/10/1997 | US5638034 Method and arrangement for tuning a combiner filter |
| 06/10/1997 | US5638024 Waste energy control and management in power amplifiers |
| 06/10/1997 | US5637928 On-vehicle sound instrument |
| 06/10/1997 | CA2085925C Wireband wireless communications transceiver |
| 06/08/1997 | CA2192052A1 Differential receiver of direct sequence spread spectrum signals |
| 06/05/1997 | WO1997020402A1 Signal acquisition via repeated access probe transmission |
| 06/05/1997 | WO1997020400A1 Diversity receiver and control method therefor |
| 06/05/1997 | WO1997020399A1 Transmission system for a non linear transmission medium |
| 06/05/1997 | WO1997020397A1 Method and non-linear filter for reducing co-channel interference |
| 06/05/1997 | WO1997020387A1 Circuit for briefly muting the reproduction of a low-frequency signal in a radio receiver |
| 06/05/1997 | WO1997020386A1 Radio receiver with a potentiometer as volume regulator |
| 06/05/1997 | WO1997020227A1 Method for automatically lowering the acquisition and tracking thresholds of spread spectrum codes received in orbit |