| 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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| 08/07/1997 | DE19604034A1 Vertical antenna for hand held radio |
| 08/07/1997 | DE19603653A1 Code transmitter for automobile anti-theft device |
| 08/07/1997 | CA2238688A1 Loop antenna with reduced electrical field sensitivity |
| 08/07/1997 | CA2196938A1 Distortion-free chopper-based signal mixer |
| 08/06/1997 | EP0788284A1 Scanning antenna for a communications system |
| 08/06/1997 | EP0788251A2 Digital audio broadcasting receiver |
| 08/06/1997 | EP0788244A1 Radio receiver |
| 08/06/1997 | EP0788243A2 Mobile telephone unit |
| 08/06/1997 | EP0788185A1 Switch attenuator |
| 08/06/1997 | EP0738440A4 Global video communications systems |
| 08/06/1997 | EP0587626B1 Process for the radio transmission of a control signal varying in time and radio receiver for receiving such a control signal |
| 08/06/1997 | CN2259027Y Motor switch for control of radio pager |
| 08/06/1997 | CN1156524A Aerial switch for wireless aerial deversity telecommunications devices with two aerials |
| 08/06/1997 | CN1156387A Device for softly controlling break in freqneyc spectrum expanding communication |
| 08/06/1997 | CN1156386A Mobile unit for distributing voice item to direct mode channel communication |
| 08/06/1997 | CN1156351A 单频道发射机系统 Single-channel transmitter system |
| 08/06/1997 | CN1156350A Method and device for radio transmission |
| 08/06/1997 | CN1035588C Circuit for selectingtuning of radio receiver |
| 08/06/1997 | CN1035586C Receiver for spread spectrum communication |
| 08/06/1997 | CN1035584C Apparatus and method for controlling loop bandwidth of phase locked loop |
| 08/05/1997 | US5655220 Reverse link, transmit power correction and limitation in a radiotelephone system |
| 08/05/1997 | US5654980 Method for controlling a receiver, and a receiver |
| 08/05/1997 | US5654942 Wireless voice messaging device for use with cassette player |
| 08/05/1997 | US5654774 Tuner for digital satellite receiver |
| 08/05/1997 | US5654719 Radio receiver with position locating means |
| 08/05/1997 | US5654714 Remote controller and method for presetting control data therein |
| 08/05/1997 | US5654674 Oscillator control circuit with phase detection feedback |
| 08/05/1997 | US5653367 Holster arrangement for a transportable communications device |
| 08/05/1997 | US5653336 Cellular phone carrying device |
| 08/05/1997 | CA2195039A1 Frequency stabilized communication system |
| 07/31/1997 | WO1997027705A1 Transmission of data items |
| 07/31/1997 | WO1997027697A1 Portable telephone with terminal mode facility |
| 07/31/1997 | WO1997027686A1 A method for frame quality detection and a receiver |
| 07/31/1997 | WO1997027682A1 Time-duplex wireless telephone with improved hearing-aid compatibility |
| 07/31/1997 | WO1997027680A1 Method for unlicensed band port to autonomously determine interference threshold and power level |
| 07/31/1997 | WO1997027678A1 Mobile radio telephone unit |
| 07/31/1997 | WO1997027677A1 Method for assigning band port channels in an unlicensed personal communications system |
| 07/31/1997 | WO1997027676A1 Validation of subscriber signals in a cellular radio network |
| 07/31/1997 | WO1997027643A1 Apparatus and method for adaptive beamforming in an antenna array |
| 07/31/1997 | WO1997027642A1 ANTENNA FOR FREQUENCIES IN EXCESS OF 200 MHz |
| 07/31/1997 | WO1997027579A1 Method and apparatus for evaluating an audio decoder |
| 07/31/1997 | WO1997022183A3 A logarithmic level detector and a radio receiver |
| 07/31/1997 | DE19704907A1 Mobile radio telephone with direct communication capability |
| 07/31/1997 | DE19602706A1 Electromagnetic radiation screen for mobile telephone |
| 07/31/1997 | DE19602503A1 Mobilfunkeinheit Mobile unit |
| 07/31/1997 | DE19601729A1 Controlling amplifying factor of aerial amplifier |
| 07/30/1997 | EP0786875A1 Secure data transmission over N normal channels and at least one security channel |
| 07/30/1997 | EP0786874A2 Method and apparatus for audio data compression |
| 07/30/1997 | EP0786873A2 Sequential gain transceiver |
| 07/30/1997 | EP0786867A1 Digital method and apparatus for reducing EMI emissions in digitally-clocked systems |
| 07/30/1997 | EP0786859A2 Power amplifying circuit and method |
| 07/30/1997 | EP0786849A1 Manually operated auxiliary power supply for mobile telecommunication devices |
| 07/30/1997 | EP0786172A1 Digital transmission system, transmitter, receiver, equivalent analog signal, and transmission method |
| 07/30/1997 | EP0786171A2 Concealment method and arrangement and reproducing apparatus provided with the concealment arrangement |
| 07/30/1997 | EP0666007B1 Mobile communications device registration method |
| 07/30/1997 | EP0583306B1 Device and method for adjusting a bandpass filter, especially a combiner filter |
| 07/30/1997 | CN1155965A CDMA mobile communication method, system, and mobile station equipment |
| 07/30/1997 | CN1155964A Method and system for providing communications service to a coverage hole |
| 07/30/1997 | CN1155963A Method and apparatus for optimizing and testing a communition system |
| 07/30/1997 | CN1155961A Transmission system with improved tone detection |
| 07/30/1997 | CN1155951A Communications system and transmitting means therefor |
| 07/30/1997 | CN1155796A Frequency diversity process and device for SHF (super high frequency) carrier |
| 07/30/1997 | CN1155790A Apparatus for transmitting signal |
| 07/30/1997 | CA2196141A1 Portable radio apparatus |
| 07/30/1997 | CA2194535A1 Hysteresis-free anti-saturation circuit |
| 07/29/1997 | US5652903 DSP co-processor for use on an integrated circuit that performs multiple communication tasks |
| 07/29/1997 | US5652766 Data transmitting and receiving method and apparatus thereof |
| 07/29/1997 | US5652765 Receiver and repeater for spread spectrum communications |
| 07/29/1997 | US5652764 Radio communication system |
| 07/29/1997 | US5652760 Error rate measuring apparatus |
| 07/29/1997 | US5652748 Method for making a handover in a CDMA cellular radio system, and a mobile station |
| 07/29/1997 | US5652613 Intelligent electronic program guide memory management system and method |
| 07/29/1997 | US5652599 Dual-band antenna system |
| 07/29/1997 | US5652579 Knowledge-based access system for control functions |
| 07/29/1997 | US5652578 Home base directional indicator |
| 07/29/1997 | CA2196210A1 A process for the secure transmission of data over n normal channels and at least one spare channel, terminal transmitting station, terminal receive station and corresponding relay stations |
| 07/24/1997 | WO1997026766A1 Multi-purpose radio base station |
| 07/24/1997 | WO1997026762A1 Satellite receiver computer adapter card |
| 07/24/1997 | WO1997026719A1 Improvements relating to mobile phones |
| 07/24/1997 | WO1997026714A1 Antenna system for dual mode satellite/cellular portable phone |
| 07/24/1997 | WO1997026713A1 Flip cover and antenna assembly for a portable phone |
| 07/24/1997 | WO1997026710A1 Method and apparatus for selecting from multiple mixers |
| 07/24/1997 | WO1997026704A1 Switchable voltage-controlled oscillator |
| 07/24/1997 | WO1997026624A1 A method and a device for finalizing data carrying communication equipment in traffic control systems |
| 07/24/1997 | DE19651545A1 Gehäuseteil mit Schirmfunktion für Funkgeräte Casing with screen function for radio equipment |
| 07/24/1997 | DE19644448A1 Integrated circuit for communications apparatus |
| 07/24/1997 | DE19630391C1 Two-stage data detection method esp. for receiver in communication system |
| 07/24/1997 | DE19617654C1 Stereo or multi=channel sound signal coding method |
| 07/24/1997 | CA2242919A1 Switchable voltage-controlled oscillator |
| 07/24/1997 | CA2242480A1 Antenna system for dual mode satellite/cellular portable phone |
| 07/23/1997 | EP0785679A2 Energy-saving operation for communication apparatus |
| 07/23/1997 | EP0785659A2 Microphone signal expansion for background noise reduction |
| 07/23/1997 | EP0785640A1 Method for extending the RSSI range and radio transceiver operating in accordance with this method |
| 07/23/1997 | EP0785637A2 Wireless communication apparatus and method |
| 07/23/1997 | EP0785635A1 Method and apparatus for frequency diversity transmission using a plurality of uncorrelated carriers |
| 07/23/1997 | EP0785634A2 Mobile phone with SIM card |
| 07/23/1997 | EP0785633A2 Portable apparatus with removable clip |
| 07/23/1997 | EP0785632A2 Spread spectrum signal receiver |
| 07/23/1997 | EP0785621A1 Correlating filter and CDMA receiver |
| 07/23/1997 | EP0785590A1 Composite high-frequency component |