Patents
Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673)
10/1996
10/08/1996US5564099 Radio signal reception with a PLL frequency controlled for an IF signal depending on coexistence of a spurious signal with the radio signal
10/08/1996US5564098 Ultra low-power integrated circuit for pseudo-baseband down-conversion of GPS RF signals
10/08/1996US5564097 Spread intermediate frequency radio receiver with adaptive spurious rejection
10/08/1996US5563617 Doppler microwave sensor
10/08/1996US5563545 Low cost monolithic GaAs upconverter chip
10/01/1996US5561403 Oscillator and modulator arrangements on a circuit board
09/1996
09/26/1996DE19536431C1 Integrated microwave silicon component, e.g. as 50 Ohm wideband preamplifier, oscillator or mixer
09/25/1996CN1032891C Device for modulator
09/24/1996US5559468 Feedback loop closure in a linear transmitter
09/24/1996US5559457 Double-balanced mixer circuit
09/19/1996WO1996028885A1 Slope, drift and offset compensation in zero-if receivers
09/18/1996CN1131481A Line interface apparatus and method for isolating data terminal equipment from the line
09/17/1996US5557632 Demodulation and roll-off filter apparatus
09/17/1996US5557222 Delayed detection type demodulator
09/11/1996EP0489749B1 Image canceling mixer circuit on an integrated circuit chip
09/03/1996US5553319 Routing YIG-tuned mixer
09/03/1996US5552734 Local oscillator frequency multiplier and mixing circuit comprising a squaring circuit
08/1996
08/28/1996EP0728391A1 Clock-recovery circuit
08/28/1996EP0426812B1 Gallium-arsenide switching mixer
08/27/1996US5551076 Circuit and method of series biasing a single-ended mixer
08/27/1996US5551074 Balanced reflection transformer
08/22/1996WO1996025809A1 Method and apparatus for reducing quantization noise
08/22/1996WO1996025790A1 Improvements in or relating to communications receivers
08/22/1996DE19609811A1 Double-conversion TV tuner arrangement for all-band reception off-air or from CATV input
08/22/1996CA2185026A1 Method and apparatus for reducing quantization noise
08/20/1996US5548840 Balanced mixer circuit with improved linearity
08/20/1996US5548839 Wide band radio-frequency converter having multiple use of intermediate frequency translators
08/20/1996US5548831 FM Receiver having multiple IF stages
08/20/1996US5548244 Method for converting an input signal
08/14/1996EP0726646A1 Frequency converter capable of reducing noise components in local oscillation signals
08/06/1996CA2066851C Multiple user digital receiver apparatus and method with combined multiple frequency channels
08/01/1996WO1996023365A1 Rf mixer with extended dynamic range
07/1996
07/31/1996CN1128091A Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
07/31/1996CN1127943A System with multiple source antennae integrated with a lownoise frequency converter
07/30/1996US5542114 Radio receiver for suppressing frequency drift in an intermediate frequency stage
07/24/1996EP0723335A1 Radio receiver apparatus of orthogonal detection type comprising local oscillator means with improved automatic frequency control arrangement
07/23/1996US5539776 All digital if-to-baseband signal converter
07/17/1996EP0721702A1 Line interface apparatus and method for isolating data terminal equipment from the line
07/17/1996EP0721697A1 Dwarf waves mixer realized by windowing
07/16/1996US5537676 Method of receiving data signals in a radio transceiver using low cost components
07/11/1996WO1996021292A1 Wideband frequency signal digitizer and method
07/11/1996WO1996021288A1 Multi-channel digital transceiver and method
07/09/1996US5535445 Mixer circuit
07/09/1996US5535247 Frequency modifier for a transmitter
07/09/1996US5534830 Thick film balanced line structure, and microwave baluns, resonators, mixers, splitters, and filters constructed therefrom
07/02/1996US5532637 Linear low-noise mixer
06/1996
06/27/1996WO1996019864A1 Receiver circuit
06/27/1996WO1996019863A1 Image-reject mixers
06/26/1996EP0718966A1 Amplifier circuit
06/26/1996EP0718964A2 Switchable oscillator circuit and method
06/26/1996EP0506727B1 A method and a device for radio receivers if (intermediate frequency) signal detection
06/25/1996US5530928 Balanced dual mode mixer apparatus
06/25/1996US5530927 Doubly balanced superconductive mixer network
06/25/1996US5530382 Phase comparator
06/19/1996EP0717502A1 Frequency synthesiser for a broadband VHF-UHF receiver
06/19/1996EP0717491A2 High precision, low phase noise synthesizer with vector modulator
06/19/1996CN1125017A Terrestrial and satellite television reception tuner
06/19/1996CN1125016A Direct conversion tuner
06/18/1996US5528769 High electron mobility transistor monolithic integrated circuit receiver
06/12/1996EP0716500A2 Mixer and frequency conversion process using the same
06/12/1996CN1124554A I/Q quadraphase modulator circuit
06/11/1996US5525937 Frequency conversion circuit with UHF/VHF common PLL buffer
06/06/1996WO1996017441A1 Receiving circuit
06/05/1996EP0715403A1 A satellite tuner stage
06/05/1996EP0715402A1 Frequency mixing circuit having a low signal leakage between input signal paths
06/05/1996EP0715401A1 Frequency divider
05/1996
05/29/1996EP0714177A2 Radiocommunication system operating in a time shared control
05/29/1996EP0714163A1 Low supply voltage mixer
05/28/1996US5521545 Collector-injection mixer with radio frequency signal applied to collectors of lower transistor pair
05/22/1996CN1122993A Transmitting/receiving signal processing circuit in digital cordless telephone
05/21/1996US5519885 Method to generate different frequency signals in a digital radio telephone
05/15/1996EP0712104A2 Multi-channel transponder with channel amplification at a common lower frequency
05/14/1996US5517688 MMIC FET mixer and method
05/14/1996US5517687 Subharmonic image rejection and image enhancement mixer
05/14/1996US5517684 Radio communication system having current control circuit
05/08/1996EP0711031A1 Transmit mixer with current mode input
05/08/1996CA2162225A1 Transmit mixer with current mode input
05/07/1996US5515014 Interface between SAW filter and Gilbert cell mixer
05/07/1996US5514992 Low-distortion cascode circuit
05/01/1996EP0709991A2 Apparatus and method for adjusting microwave BPSK modulator and mixer
05/01/1996CN1121657A Oscillator and frequency synthesizer and communication apparatus using the oscillator
04/1996
04/30/1996US5513390 Biased FET mixer
04/30/1996US5513388 For use with a receiver
04/25/1996WO1996012341A1 Wide band radio-frequency converter having multiple use of intermediate frequency translators
04/25/1996DE19538002A1 Time-share mixer circuit, esp. for microwave monolithic superheterodyne receiver
04/25/1996CA2202769A1 Wide band radio-frequency converter having multiple use of intermediate frequency translators
04/24/1996EP0707757A1 Microwave transmission system
04/24/1996CN1121284A Digital radio transmission-reception apparatus
04/17/1996EP0707357A1 Antenna system with multiple feeders integrated in a low noise converter (LNC)
04/17/1996EP0706730A1 Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
04/17/1996CN1120777A Digital data receiver
04/10/1996EP0706259A1 Automatic calibration of carrier suppression and loop phase in a cartesian amplifier
04/09/1996US5507036 Apparatus with distortion cancelling feed forward signal
04/09/1996US5507025 Method and apparatus for satellite receiver with variable predetection bandwidth
04/09/1996US5507017 Control of attenuation and amplification in foward and feedback paths for power control for cartesian amplifiers
04/03/1996EP0704122A1 Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system
03/1996
03/27/1996CN1119369A Dual-function double balanced mixer
03/20/1996EP0701746A1 Terrestrial and satellite television reception tuner
03/20/1996EP0701745A1 Direct conversion tuner
03/13/1996CN1118535A Correcting circuit for mixing circuit, receiver using same, and frequency spectrum-inverting circuit using same
1 ... 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 ... 77