Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 7 - Multiple-port networks comprising only passive electrical elements as network components
Patents for H03H 7 - Multiple-port networks comprising only passive electrical elements as network components (15,104)
07/1998
07/14/1998US5781084 Microwave reflection filter including a ladder network of resonators having progressively smaller Q values
07/14/1998US5781082 Power supply filter for preventing noise signal from entering power supply circuit
07/14/1998US5781078 Filter enhancement using input-to-output ground isolation and shielding
07/09/1998WO1998029881A1 Device comprising an integrated coil
07/08/1998EP0852428A2 Multilayered balance-to-unbalance signal transformer
07/07/1998US5778308 Adaptive antenna matching
07/07/1998US5777533 LC filter with external electrodes only on a smaller layer
07/01/1998EP0851576A2 High-frequency amplifier
07/01/1998EP0780034A4 Lumped element filters
06/1998
06/30/1998US5774028 Surface mount line filter with solder gas discharge paths in the core
06/30/1998US5774027 Band-pass filter with trap circuits having different Q factors
06/25/1998WO1998027646A1 Method of and apparatus for matching a load to a source
06/25/1998DE19653236A1 Resistance value adjustment method for variable resistance
06/24/1998EP0849823A1 Glass antenna system with an impedance matching network
06/24/1998EP0849820A2 Tunable microwave network using microelectromechanical switches
06/24/1998CN1185692A Interface mould block
06/24/1998CN1185684A Tuned filter of shortened length
06/23/1998US5770983 Reduced length tuned filter having transverse oriented coils
06/23/1998CA2224957A1 Device for improving the quality of audio and/or video signals
06/23/1998CA2089617C Control circuit for automatically controlled feed forward nonlinear distortion compensation amplifier
06/16/1998US5767754 For coupling a signal
06/16/1998US5767732 Circuit for permanently adjusting a circuit element value in a semiconductor integrated circuit using fuse elements
06/11/1998WO1998025323A1 Dual-band antenna coupler for a portable radiotelephone
06/10/1998DE19644339C1 Vorrichtung zur Transformation einer Antennenimpedanz Apparatus for transforming an antenna impedance
06/09/1998US5764695 Adaptive line equalizer
06/09/1998US5764126 Chip coil
06/04/1998WO1998024177A1 Unbalanced to balanced high impedance ratio wideband transformer circuit
06/02/1998US5760662 Methods and apparatus for improving frequency response of integrated RC filters with additional ground pins
06/02/1998US5760642 Filter circuit using a junction capacitor of a semiconductor
05/1998
05/27/1998EP0844733A2 Low-pass filter
05/27/1998EP0844625A2 Multilayer electronic part and method for producing the same
05/27/1998EP0844493A1 Spurious frequency suppressor
05/27/1998CN1183181A AGC circuit arrangement for a tuner
05/26/1998US5757623 Low-noise, high-Q stripline inductor
05/26/1998US5757248 Arrangement for matching and tuning a surface acoustic wave filter utilizing adjustable microstrip lines
05/26/1998US5757247 Device and method for tuning a band-pass filter utilizing mixing results with DC component removed
05/20/1998EP0843410A2 Inductance-capacitance composite component
05/20/1998EP0843374A2 Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same
05/20/1998EP0842572A1 Noise suppression in pwm-driven dc motor
05/20/1998EP0842562A1 Automatically switched equalization circuit
05/20/1998DE19643848A1 Electrical plug connection for transmission of messages or energy
05/19/1998US5754082 N-way combiner
05/14/1998DE19646774A1 High frequency circuit equalisation method for television tuner
05/13/1998EP0841756A2 An improved correlator circuit for a six-port receiver
05/13/1998EP0841748A2 Electronic filter components incorporating capacitors
05/13/1998EP0841671A2 Electronic components incorporating capacitors
05/13/1998EP0840941A2 Method of and apparatus for controlling reactive impedances of a matching network connected between an rf source and an rf plasma processor
05/13/1998CN2281590Y Lightning arresting FM/TV signal socket
05/12/1998US5752179 Selective RF circuit with varactor tuned and switched bandpass filters
05/07/1998WO1998019393A1 Method for producing an electrical component and resulting component
05/07/1998WO1998019358A1 Device for transforming an antenna impedance
05/06/1998CN2281030Y Lightning-protecting anti-interference and overvoltage protective socket
05/05/1998US5748056 Compact 90° monolithic GaAs coupler for wireless applications
04/1998
04/30/1998DE19636732C1 Mobile communication station with high frequency interface
04/28/1998US5745838 For controlling the return path loss in a two-way communication system
04/28/1998CA2027806C Carbon desorption heater
04/25/1998CA2188843A1 Connecting arrangement for reducing induced noise
04/21/1998US5742213 Unbalanced to balanced high impedance ratio wideband transformer circuit
04/16/1998DE19640254A1 Circuit arrangement for noise suppression
04/15/1998EP0836277A2 LC composite part
04/15/1998EP0836203A2 Amplifying unit comprising an input transformer capable of contributing to a wider frequency band of a broadband amplifier
04/14/1998US5739732 AC noise spike suppression circuit with parallel back-to-back fast diodes
04/14/1998CA2072540C Equalizer for optically transmitted information signals
04/09/1998WO1998015056A1 A filter co-processor
04/09/1998DE19639880A1 Koaxiales Durchführungsfilter Coaxial feedthrough filter
04/07/1998US5737461 Methods and filter for isolating upstream ingress noise in a bi-directional cable system
04/02/1998WO1998013932A1 Branch filter and shared device and 2-frequency band mobile communication apparatus using the branch filter
04/02/1998WO1998013931A1 Coaxial bushing filter
04/02/1998WO1998013930A1 Coaxial bushing filter
04/01/1998EP0833445A2 Filter having tunable center frequency and/or tunable bandwidth
03/1998
03/27/1998CA2212999A1 Filter having tunable center frequency and/or tunable bandwidth
03/26/1998WO1998012838A1 Multiple signal processing unit for utility wiring by receiver/lan and utility wiring system by receiver/lan
03/26/1998WO1998012744A1 Passive electronic parts, ic parts, and wafer
03/26/1998WO1998012718A1 Current-compensated radio interference suppression reactor with increased leakage inductance
03/18/1998EP0829960A2 Improvements in or relating to electronic filters
03/18/1998EP0829133A1 Agc circuit arrangement for a tuner
03/18/1998EP0829107A1 Antenna coupler for a portable radiotelephone
03/18/1998CN1176531A LC filter
03/18/1998CN1176530A Method for decreasing reaction from current change of supply source and filter
03/18/1998CN1176527A Receiving mixer circuit for mobile radio transceiver designed to operate with multiple modulation modes and multiple frequency bands
03/18/1998CN1176473A Variable capacitor and LC composite modules employing the same
03/05/1998WO1998009376A1 Frequency-independent voltage divider
03/04/1998EP0826981A1 Ultrasonic diagnostic apparatus
03/04/1998CN1175325A Coupling device connecting an unbalanced signal line to a balanced signal line
02/1998
02/25/1998EP0825712A2 Electronically tuned matching networks using adjustable inductance elements and resonant tank circuits
02/25/1998EP0824786A1 Audio crossover circuit
02/25/1998CN1174451A Squelch filter for power converter
02/24/1998US5721518 Cancellation technique for bandpass filters using a narrowband network having optimally coupled and overcoupled filters
02/19/1998WO1998007208A1 Integrated matched antenna structures using printed circuit techniques
02/18/1998CN1173777A Impedance matching circuit embodying high frequency feature and display device having impedance matching circuit
02/17/1998US5719792 Isolator
02/17/1998US5719445 Input delay control
02/11/1998EP0823788A2 Receiving mixer circuit for mobile radio transceiver designed to operate with multiple modulation modes and multiple frequency bands
02/11/1998EP0823779A2 High-frequency amplifier
02/11/1998EP0823145A1 Tunable interstage filter
02/10/1998US5717827 Text-to-speech system using vector quantization based speech enconding/decoding
02/10/1998US5717716 Quasi-adaptive analog equalization method and apparatus
02/10/1998US5717394 Method and apparatus for encoding and decoding data
02/10/1998US5717368 Varactor tuned helical resonator for use with duplex filter
02/10/1998US5717359 Semiconductor integrated circuit having elongated fixed potential lines to reduce noise on the lines
1 ... 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 ... 152