Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
04/2000
04/18/2000US6052420 Adaptive multiple sub-band common-mode RFI suppression
04/18/2000US6052419 Frequency adjusting method for use with digital receiver and frequency adjusting circuit thereof
04/18/2000US6052406 Frequency hopping synchronization and tracking in a digital communication system
04/18/2000US6052405 Spread spectrum receiver for use in communication systems
04/18/2000US6052404 Radio communication system employing a spread-spectrum technique
04/18/2000US6052388 Information transmission/reception system
04/18/2000US6052378 Base band signal transmitting device in base station of mobile communication system using CDMA
04/18/2000US6052365 Multi-channel digital data transmission in a wireless telecommunications system
04/18/2000US6052024 Monolithic, low-noise, synchronous direct detection receiver for passive microwave/millimeter-wave radiometric imaging systems
04/18/2000US6050694 Light assembly removably attachable to radio and battery assembly
04/18/2000US6050327 Electronic apparatus having an environmentally sealed external enclosure
04/18/2000CA2195194C Alerting device and system for abnormal situations
04/18/2000CA2156634C Power adapter with integral radio frequency port
04/18/2000CA2115686C Structure generated composite reference signal for interference suppression in an adaptive loop
04/18/2000CA2017841C Digital transmission system using subband coding of a digital signal
04/15/2000CA2280351A1 Orthogonally polarized transmission antenna and method of transmission
04/14/2000CA2280349A1 Method and apparatus for generating multiple matched-filter vectors in a cdma demodulator
04/13/2000WO2000021306A2 Mobile phone system and mobile phone terminal using a plurality of telephone numbers
04/13/2000WO2000021237A1 Variable spread spectrum clock
04/13/2000WO2000021228A1 Method for equalization of complementary carriers in an am compatible digital audio broadcast system
04/13/2000WO2000021227A1 Apparatus for, and method of, encoding a signal
04/13/2000WO2000021222A1 Device for detecting power-on of portable phone and warning device
04/13/2000WO2000021210A1 Data terminal and coding method for increased data packet reliability in a frequency hopping system
04/13/2000WO2000021209A1 Method for receiving spread-spectrum signals
04/13/2000WO2000021208A2 Method and apparatus for interference cancellation in a rake receiver
04/13/2000WO2000021207A1 Parameterized quantization matrix adaptation for video encoding
04/13/2000WO2000021206A1 Wideband receiver and channel scanning method
04/13/2000WO2000021205A1 Highly linear variable-gain low noise amplifier
04/13/2000WO2000021204A1 A system for reducing transmitter cross-talk in receive part of a rf transceiver
04/13/2000WO2000021202A1 Transmission power amplifier for a mobile telephone
04/13/2000WO2000021201A2 Delay searcher and delay trackers interaction for new delays assignment to rake fingers
04/13/2000WO2000021193A1 If amplifier
04/13/2000WO2000021159A2 Transmit/receive module having multiple transmit/receive paths with shared circuitry
04/13/2000WO2000021155A1 Portable telephone set
04/13/2000WO2000003493A3 Cdma receiver and method of operation
04/13/2000DE19948386A1 Reproduction apparatus, for signal processing digital audio signals composed of one-bit data, uses a signal processing unit coupled to a low-pass filter to process a signal, based on the characteristic selected
04/13/2000DE19847291A1 Data transmission system for railway vehicle
04/13/2000DE19846865A1 Empfänger für digitalen Hörfunk Digital audio broadcasting receiver
04/13/2000DE19846069A1 Sendeendstufe für ein Mobiltelefon Transmitter output stage for a mobile phone
04/13/2000CA2346286A1 Wideband receiver and channel scanning method
04/13/2000CA2345963A1 Apparatus for, and method of, encoding a signal
04/13/2000CA2345745A1 Card for interaction with a computer
04/13/2000CA2345736A1 A method to use acoustic signals for computer communications
04/13/2000CA2345616A1 Method for equalization of complementary carriers in an am compatible digital audio broadcast system
04/13/2000CA2344427A1 Transmit/receive module having multiple transmit/receive paths with shared circuitry
04/12/2000EP0993213A1 Packet data multiplex scheme for downlink channels in broadband CDMA
04/12/2000EP0993209A2 Apparatus for testing mobile telephones
04/12/2000EP0993136A1 Transmitter
04/12/2000EP0993129A2 Channel estimation in space time block coded transmit antenna diversity for WCDMA
04/12/2000EP0993127A1 Method and apparatus using Walsh-Hadamard transformation for forward link multiuser detection in CDMA systems
04/12/2000EP0993125A2 A Quadrature low-if homodyne radio receiver
04/12/2000EP0993124A2 Radio signal transmitter in two frequency bands with and without power limitation
04/12/2000EP0993123A2 An A/D conversion apparatus and a radio apparatus
04/12/2000EP0993120A2 SPST switch, SPDT switch, and communication apparatus using the SPDT switch
04/12/2000EP0993070A1 Inverted-F antenna with switched impedance
04/12/2000EP0993063A2 Duplexer and communication apparatus
04/12/2000EP0992148A1 Wrist mobile phone
04/12/2000EP0992135A1 Bandpass correlation of a spread spectrum signal
04/12/2000EP0992134A1 Receiving a spread spectrum signal
04/12/2000EP0992133A1 Bandpass processing of a spread spectrum signal
04/12/2000EP0992130A1 Method and device for effective data radiotransmission
04/12/2000EP0992129A1 Method and device for radiotransmission
04/12/2000EP0992124A1 Acquiring a spread spectrum signal
04/12/2000EP0992122A1 Mobile station synchronization within a spread spectrum communications system
04/12/2000EP0992120A1 Wireless communications system for transmitting and receiving data with increased data rates and robustness
04/12/2000EP0992119A1 Processing a spread spectrum signal in a frequency adjustable system
04/12/2000EP0992118A1 Transmission of fm video signals over various lines
04/12/2000EP0992109A2 Simplified receiver for frequency shift keyed signals
04/12/2000EP0992108A2 If-receiver
04/12/2000EP0992077A1 Protection from electrosmog
04/12/2000EP0710411A4 A method for a transmitter to compensate for varying loading without an isolator
04/12/2000CN2373952Y Double-support handset
04/12/2000CN2373951Y Elastic rope structure for preventing communication apparatus from loss
04/12/2000CN1250581A Communcations terminal and method for data transmission between a communications network and a communications terminal
04/12/2000CN1250577A Battery economising in a communications system
04/12/2000CN1250560A A method for combining signals, and a receiver
04/12/2000CN1250558A Multichannel Viterbi decoder
04/12/2000CN1250345A Strong acoustics equipment
04/12/2000CN1250341A Equipment and method for high channel receiving using for code division multiple access mobile terminal
04/12/2000CN1250338A Method and apparatus for radio communication
04/12/2000CN1250336A Radio equipment containing charging device
04/12/2000CN1250334A CDMA power control for paging and initial service channel power
04/12/2000CN1250331A Method for sharing channel between base station sector and frequency distribution in code division multiple access system
04/12/2000CN1250325A Radio signal sender
04/12/2000CN1250322A Multiple-direction and multiple communication system using for comprehensive basiness digital network service
04/12/2000CN1250298A Method for saving electric source power of mobile telephone set
04/12/2000CN1250285A Transmission electrical level control method and transmitter-receiver set in radio local loop system
04/12/2000CN1250284A 码分多址系统 CDMA System
04/12/2000CN1250278A Telecommunication system
04/12/2000CN1250277A Digital audio frequency broadcasting receiver
04/12/2000CN1250264A Radio device and portable transmitter -receiver
04/12/2000CN1250262A Wide-band CDMA system binary phase-shift keying/orthogonal phase-shift keying modulator
04/12/2000CN1250261A Antenna impedance tuner
04/12/2000CN1250260A Antenna apparatus mounted on turning cover of upturning type portable telephone set
04/12/2000CN1250259A Radio circuit apparatus and radio communication equipment
04/12/2000CN1250258A Communication message transceiver
04/12/2000CN1250254A Scanning pilot technology using for distorted control system generated by reducing circuit
04/12/2000CN1250252A Transmitting installation and its method
04/12/2000CN1250251A Double-side band pilot technology using for distorted control system generated from reducing circuit
04/12/2000CN1250250A Predistorter of amplifier and amplifier unit
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