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)
12/2003
12/10/2003EP1368892A1 Filter arrangement
12/10/2003EP0909481B1 Receiver and filter arrangement comprising polyphase filters
12/10/2003CN2591861Y Control circuit of motor for pulsator washing machine
12/10/2003CN1461524A Tunable quadrature phase shifter
12/10/2003CN1461488A Laminated balun transformer
12/10/2003CN1130823C Dual-band dual-mode power amplifier
12/10/2003CN1130820C Buffer amplifying return circuit
12/10/2003CN1130795C Dual-band antenna system
12/09/2003US6661316 High frequency printed circuit board via
12/09/2003US6661312 Multilayer filter array
12/09/2003US6661306 Compact lumped element dual highpass/lowpass balun layout
12/09/2003US6661250 Programmable impedance control circuit
12/09/2003CA2317514C Catv passive component with rf splitter and power adding/removal port
12/04/2003WO2003100972A1 Complex resonance circuit and filter
12/04/2003WO2003100971A1 Lc parallel resonance circuit, multilayer board incorporating lc parallel resonance circuit, and their production methods therefor
12/04/2003WO2003100970A1 Lc series resonance circuit, board incorporating lc series resonance circuit, and production methods therefor
12/04/2003WO2003100800A1 Decoupling module for decoupling high-frequency signals from a power supply line
12/04/2003US20030224753 High-frequency coupler
12/04/2003US20030224746 Unconditionally stable on-chip filter and applications thereof
12/04/2003US20030222734 Transmission line type noise filter with small size and simple structure, having excellent noise removing characteristic over wide band including high frequency band
12/04/2003US20030222730 Impedance matching circuit and noise filter equipped with the same
12/04/2003US20030222729 Methods and apparatus for tuning successive approximation
12/04/2003US20030222691 Broadband phase-shifter
12/03/2003EP1367714A1 Radio frequency coupler
12/03/2003CN1129974C Nonreciprocal circuit device
12/02/2003US6658265 Matching network for a dual mode RF amplifier
12/02/2003US6657581 Automotive lane changing aid indicator
12/02/2003US6657530 Multi-layered inductance element
12/02/2003US6657522 Wide bandwidth bias tee
11/2003
11/27/2003WO2003098803A2 Efficient polyphase filter having a compact structure
11/27/2003WO2003098799A1 Noise suppressing circuit
11/27/2003US20030220083 High frequency composite component
11/27/2003US20030218889 Filtering device for converting electrical energy
11/27/2003US20030218514 Universal tuning and matching device
11/26/2003EP1365507A1 Universal tuning and matching device
11/26/2003CN1459144A Circuit and method for input side impedance matching of power amplifier in electronic device
11/26/2003CN1129229C Electrical impedance matching system and method
11/26/2003CN1129228C Multiport gyrator
11/25/2003US6653913 Tunable piezoelectric filter arrangement using a dielectric material with a voltage-dependent dielectric constant
11/25/2003US6653912 RF and microwave duplexers that operate in accordance with a channel frequency allocation method
11/25/2003US6653910 Spiral balun
11/20/2003WO2003096532A1 Demodulation apparatus for digital audio amplifier
11/20/2003US20030214793 Ceramic electronic component and method for making the same
11/19/2003EP1363398A1 Phase shifting circuit and phase shifter
11/19/2003EP1363360A1 Antenna incorporating filter
11/19/2003EP1363296A1 Common mode radio interference suppression choke for electronic ballast
11/19/2003CN1457145A Demodulator for digital audio-frequency amplifier
11/18/2003US6649998 Passive devices and modules for transceiver
11/18/2003US6649422 Integrated circuit having a micromagnetic device and method of manufacture therefor
11/13/2003WO2003094347A1 A wideband catv signal splitter device
11/13/2003WO2003094346A1 Improvements in or relating to wireless terminals
11/13/2003WO2003093936A2 System, method and apparatus for coordination of channel quality assessment and ingress filtering in cable modem systems
11/13/2003WO2003092997A2 Dual frequency band wireless lan
11/13/2003WO2003058809A3 Bulk acoustic wave resonator with two piezoelectric layers as balun in filters and duplexers
11/13/2003US20030210182 Video amplifier for a radar receiver
11/13/2003US20030210172 Technique for changing a range gate and radar coverage
11/13/2003US20030210110 Filter having parasitic inductance cancellation
11/13/2003US20030210109 Electronically tunable combline filters tuned by tunable dielectric capacitors
11/13/2003US20030210108 Lumped element transmission line frequency multiplexer
11/13/2003US20030210101 MEMS-based, computer systems, clock generation and oscillator circuits and LC-tank apparatus for use therein
11/12/2003EP1361658A2 Lumped element transmission line frequency multiplexer
11/12/2003EP1360707A1 Dsl compatible load coil
11/12/2003CN1455968A Integrated broadside coupled transmission line element
11/12/2003CN1455869A Device to audibly express impedance difference
11/11/2003US6646527 High frequency attenuator using liquid metal micro switches
11/11/2003US6646520 Integrated circuit interconnect system
11/11/2003CA2285270C Antenna more especially for motor vehicles
11/06/2003WO2003092158A1 Multilayer circuit apparatus with reduced coupling
11/06/2003US20030208775 System, method and apparatus for coordination of channel quality assessment and ingress filtering in cable modem systems
11/06/2003US20030207668 Dual frequency band wireless lan
11/05/2003EP0998036B1 Multiplexer/branching filter
11/04/2003US6643497 Portable telephone compensable for change of antenna impedance
11/04/2003US6642908 Switched beam antenna architecture
11/04/2003US6642904 Antenna
11/04/2003US6642812 High frequency circuit component
11/04/2003US6642811 Built-in power supply filter for an integrated circuit
11/04/2003US6642779 Trimming impedance between two nodes connected to a non-fixed voltage level
11/04/2003US6642449 Electronic component and manufacturing method thereof
10/2003
10/30/2003WO2003090352A1 Interconnecting of digital devices
10/30/2003WO2003090351A2 Method and apparatus for tuning an rf matching network in a plasma enhanced semiconductor wafer processing system
10/30/2003US20030201854 High frequency attenuator using liquid metal micro switches
10/30/2003US20030201846 Balanced high-frequency device and balance-characteristics improving method and balanced high-frequency circuit using the same
10/30/2003US20030201845 Low-reflection transmission-line filters with gaussian characteristics
10/30/2003US20030201843 Apparatus and resonant circuit employing a varactor diode in parallel with a transmission line and method thereof
10/30/2003US20030201533 Alternating electroconductivity patterns, dielectric sheets; positioning apertures
10/30/2003DE19926699C2 Hochpaßzweig einer Frequenzweiche für ADSL-Systeme High-pass crossover for an ADSL systems
10/29/2003CN2583885Y Power line 3 phase high frequency wide-band network connector
10/29/2003CN2583879Y High speed rear panel
10/29/2003CN1452835A Termination device for telephone line
10/29/2003CN1452114A 半导体存储装置 The semiconductor memory device
10/29/2003CN1126265C Scalable stereo audio encoding/decoding method and apparatus
10/29/2003CN1126250C Receiver and filter arrangement comprising polyphase filters
10/29/2003CN1126245C Surface mount filter with polymer layers
10/28/2003US6639491 Tunable ferro-electric multiplexer
10/28/2003US6639490 Ninety degree coupler for radio frequency degraded circuits
10/23/2003WO2003088477A1 Variable attenuator
10/23/2003WO2003088476A1 Circuit and method for adjusting circuit tolerances
10/23/2003US20030200514 Accurately tuning resistors
10/23/2003US20030200346 Interconnecting of digital devices
10/23/2003US20030200039 Method, apparatus, and article of manufacture for predicting electrical behavior of a multiport device having balanced device ports
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