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)
12/1998
12/01/1998US5844941 Parallel adaptive equalizer circuit
12/01/1998US5844789 Impedence regulator to block power line interference
12/01/1998US5844762 Electronic circuit device having a function of inhibiting resonance in power wiring
12/01/1998US5844451 Circuit element having at least two physically separated coil-layers
11/1998
11/25/1998EP0880226A2 Wirewound balun transformer
11/25/1998CN1199986A Frequency compensated pin diode attenuator
11/24/1998US5841821 Bi-directional low pass filtering method and apparatus
11/24/1998US5841329 Variable trap circuit
11/18/1998CN1199515A High impedance ratio wideband transformer circuit
11/18/1998CN1199281A Device for separating transmitting waves and receiving waves and radio communication equipment provided with the device
11/17/1998US5838877 Noise suppression in PWM-driven DC motor
11/17/1998US5838214 Unitary packaging system for a capacitor and inductor
11/17/1998US5838184 Equivalent variable resistor circuits
11/12/1998WO1998050927A1 Integrated dual frequency noise attenuator
11/11/1998EP0877482A1 Electronically tuned matching network using predictor-corrector control system
11/10/1998US5834994 Multilayer lowpass filter with improved ground plane configuration
11/10/1998US5834992 LC resonant part with a via hole inductor directly connected to the ground electrode
11/10/1998US5834988 Frequency compensated PIN diode attenuator
11/10/1998US5833481 Multi-tap distribution apparatus
11/04/1998CN2296599Y Narrow transition band filter
11/04/1998CN1198269A Device for absorption of electrical noise
11/03/1998CA2145622C Quadrature modulator operable in quasi-microwave band of digital communication system
10/1998
10/21/1998EP0872961A1 Attenuation equalizer for transmission lines
10/21/1998EP0872953A1 Branch filter and shared device and 2-frequency band mobile communication apparatus using the branch filter
10/21/1998CN1040380C Integrated circuit with energy storage passive circuit component
10/20/1998US5825272 Choke coil for suppressing common-mode noise and normal-mode noise
10/20/1998US5825261 Passive, aperiodic phase shifting and attenuating device for electric signals
10/20/1998US5825259 Termination for two or more differential transmission lines
10/20/1998CA2072535C Equalizer for optically transmitted information signals
10/15/1998WO1998045942A2 Receiver and filter arrangement comprising polyphase filters
10/15/1998WO1998045941A1 Tuning and matching an impedance
10/15/1998CA2285057A1 Tuning and matching an impedance
10/14/1998EP0870362A1 Method for producing an electrical component and resulting component
10/14/1998EP0870317A1 Apparatus for controlling matching network of a vacuum plasma processor and memory for same
10/14/1998CN1195901A Low-pass filter
10/13/1998US5821904 Window glass antenna device
10/13/1998US5821831 Diplex filter comprising monotonic poles
10/08/1998WO1998044585A1 Antenna more especially for motor vehicles
10/07/1998EP0869611A1 Faster switching GaAs fet switches by illumination with high intensity light
10/06/1998US5818313 Multilayer lowpass filter with single point ground plane configuration
10/06/1998US5818307 Directional coupler having inductor crossing microstrip transmission line
09/1998
09/29/1998US5815051 Differential filter circuit and integrated circuit structure therefor
09/29/1998US5815050 Differential delay line
09/29/1998US5815047 Fast transition RF impedance matching network for plasma reactor ignition
09/24/1998WO1998042091A1 Return path filter
09/22/1998US5812094 Antenna coupler for a portable radiotelephone
09/22/1998US5811961 Amplitude and phase adjustment circuit
09/17/1998DE19810620A1 Wideband damping unit for converting band of high frequency signals
09/16/1998EP0865154A2 Method and apparatus for reducing noise in a low current oscillator
09/16/1998EP0865096A1 Passive cascaded low-pass and high-pass filter with variable attenuation
09/16/1998EP0865053A2 Multilayer microelectronic circuit with trimmable capacitors
09/16/1998EP0864199A1 An impedance means
09/16/1998EP0864164A1 Current-compensated radio interference suppression reactor with increased leakage inductance
09/16/1998CN1193173A Inductor/capacitor combined element with variable capacitance and inductance
09/16/1998CN1039860C Balun apparatus and method of designing same
09/15/1998US5808527 Tunable microwave network using microelectromechanical switches
09/15/1998US5808322 Faster switching GaAs FET switches by illumination with high intensity light
09/08/1998US5805032 Electrical filter for attenuating oscillations in AC mains
09/02/1998EP0862266A2 Surface-acoustic-wave filters with poles of attenuation created by impedance circuits
09/02/1998EP0862238A2 Multilayer microelectronic circuit
09/02/1998EP0680654B1 Text-to-speech system using vector quantization based speech encoding/decoding
09/01/1998US5801749 To convert balanced/unbalanced signals based on a desired signal conversion
09/01/1998US5801602 Isolation and signal filter transformer
08/1998
08/27/1998WO1998037626A1 Device and process for telecommunication
08/26/1998EP0860050A1 Frequency-independent voltage divider
08/26/1998EP0647373B1 Device and method for tuning a combiner filter
08/26/1998CN1191376A Multilayer electronic part and method for producing the same
08/26/1998CA2228321A1 Multilayer microelectronic circuit with trimmable capacitors
08/26/1998CA2228316A1 Multilayer microelectronic circuit
08/19/1998CN1190823A Surface acoustic filter with decay pole produced by impedance circuit
08/18/1998US5796316 Top exit coupler
08/18/1998US5796286 Attenuation circuitry using gate current control of FET conduction to vary attenuation
08/12/1998CN1190320A Device for improving quality of audio and/or video signals
08/11/1998US5793601 Composite fuctional device and method for producing the same
08/11/1998US5793265 Compact diplexer
08/11/1998US5793262 Build-out network for a built-in type balanced line driver circuit
08/11/1998US5793162 Apparatus for controlling matching network of a vacuum plasma processor and memory for same
08/06/1998WO1998034344A1 Passive analog filter for network interface
08/06/1998WO1998034343A1 Multilayer lowpass filter with single point ground plane configuration
08/05/1998EP0856205A1 Top exit coupler
08/05/1998CN1189677A 叠层电子元件 Laminated electronic components
08/04/1998US5789999 Distributed lossy capacitive circuit element with two resistive layers
08/04/1998US5789995 Low loss electronic radio frequency switch
07/1998
07/30/1998WO1998033281A1 Device and method for generating compressed data
07/29/1998EP0855797A2 Junction capacitor compensation for wave shaping
07/29/1998EP0855794A2 Broadband impedance matching transformers
07/29/1998EP0855725A2 Slip ring for a variable capacitor
07/29/1998CN1188994A Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same
07/28/1998US5787392 Speech signal processing circuit and method for decoding a coded speech signal by controlling operation of a band synthesis filter
07/28/1998US5786737 For matching input/output impedances of an element to be evaluated
07/23/1998WO1998032224A1 Multilayer lowpass filter with improved groud plane configuration
07/22/1998CN1188565A Antenna coupler for portable radiotelephone
07/21/1998US5784409 Encoding data
07/21/1998US5783984 Method and means for combining a transformer and inductor on a single core structure
07/21/1998US5783976 Composite high frequency apparatus and method of forming same
07/16/1998WO1998031079A1 Non-interrupt bypass switch for rf circuits
07/15/1998EP0853380A2 High efficiency impedance matching network
07/15/1998EP0852845A1 Device for the absorption of electrical noise
07/15/1998CN1187913A Interstage electric filter for tuner
07/15/1998CN1187912A 放大器 Amplifiers
1 ... 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 ... 152