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)
01/1988
01/26/1988US4721870 Filtering of electromagnetic interference from a digital signal
01/19/1988US4719699 In the construction of a balun
01/13/1988EP0252763A2 Noise reduction circuit
01/12/1988US4719433 Attenuation bead for the suppression of interference radiation
01/07/1988EP0251914A2 Ceramic scrambler module
01/05/1988US4718117 TVRO receiver system with low-cost video-noise reduction filter
01/05/1988US4718111 Arrangement for combining the output signals from a plurality of transmitters tuned to the same frequency
01/05/1988US4717896 Balun
12/1987
12/29/1987US4716321 Low noise, high thermal stability attenuator of the integratable type
12/02/1987EP0247157A1 Adaptive impedance mismatch detector system
12/02/1987CN87200244U Microminiature spiral filter
12/01/1987US4710652 Interference signal component compensation circuit
11/1987
11/26/1987DE3715812A1 Delay chain and method for its production
11/17/1987US4707840 Line equalizer having pulse-width deviation detector for compensating long-term level variations
11/17/1987US4707673 Directional coupling transformer for bi-directional full duplex data bus
11/11/1987EP0244634A2 Variable attenuator
11/10/1987US4706048 Wide-band matching network for piezoelectric transducer
11/03/1987US4704573 Impedance mismatch detector
11/03/1987CA1228898A1 Phase control switching apparatus
10/1987
10/27/1987US4703302 Resistance ladder network
10/20/1987US4701746 Device for converting code signals of one bit number into a code signal of a smaller bit number
10/20/1987US4701725 Radio frequency signal coupler
10/20/1987US4701723 Connection construction for electronic component
10/20/1987US4701714 Tunable delay line
10/20/1987US4700440 LC filter manufacturing method
10/14/1987EP0241067A1 Filter circuit for a metal oxide integrated semiconductor device and its use in such a device
10/13/1987US4700156 End closure for tubular capacitive filter
10/13/1987US4700155 Feedthrough noise eliminating filter having integrally stepped mounting portion
10/13/1987US4700122 Power supply filtering with rechargeable battery element
10/13/1987CA1228152A2 Subscriber control system
10/07/1987EP0239695A2 Tunable delay line
10/06/1987US4698605 Monolithic LC feed-through filter having a ferrite body with a re-oxidized capacitive layer
09/1987
09/29/1987US4697162 Variable delay line system
09/16/1987EP0236538A1 Circuit arrangement involving a four-pole connected to the input with one pole and an amplifier for the compensation of a reference potential
09/15/1987US4694421 Interface system which selectively provides impedance matching between a host computer and a control circuit
09/15/1987US4694266 Notch filter
09/15/1987US4694265 Device for filtering a high-frequency conductor susceptible to electromagnetic interference of a high-frequency space
09/15/1987CA1226911A1 Voltage controlled diode attenuator
09/09/1987EP0235791A2 Digital phase shifter
08/1987
08/26/1987EP0233669A1 Arrangement for galvanically interconnecting one or more electric conductors, while preventing electromagnetic radiation from transferring energy between conductors thus interconnected
08/25/1987US4689498 Signal input circuit with constant operating power
08/19/1987CN87100566A Electrical circuit for using with four-pole device
08/11/1987US4686495 Finely variable delay line incorporating coarsely and finely varible delay line elements
08/11/1987US4686492 Impedance match connection using multiple layers of bond wires
08/04/1987US4684881 Low impedance switched attenuator
07/1987
07/28/1987US4683443 Monolithic low noise amplifier with limiting
07/28/1987US4683386 Electronic attenuation value control circuit in which switching noise is suppressed
07/22/1987EP0229728A2 Pulse forming networks
07/21/1987US4682325 System for selectively coupling a plurality of stations into a single communications path
07/21/1987US4682128 Phase shifter
07/16/1987DE3637121A1 Electrical engineering measures for the attenuation and suppression of radio-frequency signals on electrical lines
07/16/1987DE3533354A1 Multiple directional coupler branches
07/15/1987CN86107728A Improvements to pin diode attenuators
07/14/1987US4680559 RF splitter circuit
07/07/1987US4679064 Circuit for changeable prolongation of the running time of an ultrasound delay line
07/07/1987US4679010 Microwave circulator comprising a plurality of directional couplers connected together by isolation amplifiers
07/07/1987US4679007 Matching circuit for delivering radio frequency electromagnetic energy to a variable impedance load
07/07/1987CA1223929A1 Cable networks and filters with interfacial losses
07/02/1987DE3545405A1 Circuit arrangement for a single-phase stop filter (wide-band stop filter)
06/1987
06/30/1987US4677401 Noise filter for three-phase four-wire system
06/30/1987US4677395 Digital phase shifter
06/30/1987CA1223647A1 Filter integrated circuit
06/24/1987EP0226154A2 Monolithic dual-gate GaAs fet digital phase shifter with gain
06/23/1987US4675629 Noise filter
06/23/1987US4674995 Bicycle front derailleur
06/16/1987EP0225461A2 Home signal distributing apparatus
06/16/1987CA1223051A1 Quadrupole for resistive matching of a reactance of the rlc type
06/09/1987US4672686 High frequency antenna tuning device
06/04/1987WO1987003378A1 Adaptive impedance mismatch detector system
06/02/1987US4670723 Broad band, thin film attenuator and method for construction thereof
05/1987
05/27/1987EP0223289A2 Improvements to pin diode attenuators
05/26/1987US4668932 Nonvolatile reprogrammable electronic potentiometer
05/26/1987US4668882 Radio frequency signal variable attenuation circuit
05/20/1987EP0222261A2 High-pass filter of a filter arrangement for an AC network connected with a converter
05/19/1987US4667173 Line filter
05/19/1987US4667120 Integrated filter circuit with variable frequency characteristics
05/19/1987CA1222029A1 Transmission lines
05/14/1987DE3637646A1 Current shunt for high-impedance inputs
05/06/1987EP0220861A2 Phase shifter
05/06/1987EP0220700A2 Insertion system for control and/or power supply voltages in a coaxial cable for radio-frequency
05/06/1987EP0220494A2 DC to DC energy conversion system
05/06/1987EP0220454A1 Circuit arrangement for compensating gate transit time variations as a function of temperature
05/05/1987US4663586 Device with automatic compensation of an ac attenuator
04/1987
04/30/1987DE3538342A1 Frequency filter
04/28/1987US4662001 Tunable notch filter for image frequency and conducted local oscillator leakage rejection
04/28/1987US4661763 Phase shifter
04/23/1987DE3537312A1 Radio-frequency distributor
04/23/1987DE3536731A1 Controllable low-pass filter
04/22/1987EP0218910A1 Frequency band splitter for HF directional couplers
04/15/1987CN85107611A Band-pass filter with some dielectric resonators
04/07/1987US4656443 Variable distributed constant delay line having movable slider contact
04/07/1987US4656442 Hybrid circuit device
04/01/1987EP0216699A1 Hyperfrequency circuit with a low parasitic capacitance
04/01/1987EP0216389A2 High frequency filter assembly for electric instrument
04/01/1987CN86104896A Switch dividing device for common reception
03/1987
03/31/1987US4654669 Electrical signal separating device for window antenna having isolating and matching circuitry
03/31/1987US4654610 PIN diode switched RF signal attenuator
03/31/1987US4654546 Electromechanical film and procedure for manufacturing same
03/18/1987EP0091488B1 Bus system
03/18/1987CN86106269A Apparatus and method for providing improved resistive ratio stability of a resistive divider network
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