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)
03/2003
03/27/2003US20030058184 Radio antenna matching circuit
03/27/2003US20030058063 Multilayered band separator with grounding parasitic capacitor
03/27/2003US20030058060 Noise reduction high frequency circuit
03/27/2003CA2460988A1 Adaptive equalizer which is independent of the amplitude of the transmited signal
03/26/2003EP1296452A1 A radio antenna matching circuit
03/26/2003EP1295516A2 Bypass capacitor methods for achieving a desired value of electrical impedance between parallel planar conductors of an electrical power distribution structure, and associated electrical power distribution structures
03/26/2003EP1040573B1 Filter arrangement
03/26/2003CN1104089C LC filter
03/25/2003US6538874 Electronic device
03/25/2003US6538538 High frequency printed circuit board via
03/25/2003US6538534 Stacked type dielectric filter
03/25/2003US6538532 Magnetically coupled series-tuned air coil resonators having very low C/L ratios to achieve higher QL, lower insertion loss and improved out-of-band rejection
03/25/2003US6538531 Multilayered LC composite component and method for adjusting frequency of the same
03/25/2003US6538506 Matching apparatus
03/25/2003US6538499 Low jitter transmitter architecture with post PLL filter
03/25/2003US6538246 Variable resistance circuit, operational amplification circuit, semiconductor integrated circuit, time constant switching circuit and waveform shaping circuit
03/20/2003US20030054791 RF circuit
03/20/2003US20030053534 Transmit amplitude independent adaptive equalizer
03/20/2003US20030052750 Tunable filters having variable bandwidth and variable delay
03/20/2003US20030052748 High frequency circuit component
03/19/2003EP1293049A1 Circuit arrangement for the suppression of analogue echoes
03/19/2003EP1293036A1 Demodulation filter
03/19/2003EP1034617B1 Broadband phase-shifting circuit
03/19/2003CN1404333A LC filter circuit, laminated LC composite parts, multiplexer and radio communication apparatus
03/18/2003US6535553 Passband equalizers with filter coefficients calculated from modulated carrier signals
03/18/2003US6534842 Composite components and the method of manufacturing the same
03/13/2003WO2003021775A1 Method and apparatus for impedance matching in an amplifier using lumped and distributed inductance
03/13/2003US20030048155 Low pass for an adsl frequency filter
03/13/2003US20030048153 RF and microwave duplexers that operate in accordance with a channel frequency allocation method
03/13/2003US20030048137 GPS low noise amplifier unit, duplex filter unit and GPS-cellular hand-set
03/12/2003EP1292024A1 GPS low noise amplifier unit, duplex filter unit and GPS-cellular hand-set
03/12/2003EP1290790A1 Tunable filter arrangement
03/12/2003EP1290788A2 Method and apparatus for selecting at least one desired channel utilizing a bank of vibrating micromechanical apparatus
03/12/2003EP1010243B1 A dual-band, dual-mode power amplifier
03/12/2003EP0995264B1 Impedance matching circuit for power amplifier
03/12/2003CN1402578A Inductance-condensor filter circuit, stacked inductance-condensor composite component, multiplexer and radio communication device
03/12/2003CN1402426A Multi-layer LC composite element and mfg. method thereof
03/12/2003CN1402377A Single-chip LC element
03/11/2003US6531943 Balun-transformer
03/11/2003US6531917 Non-linear distortion compensating apparatus
03/06/2003US20030043996 Magnetically activated electric filter apparatus
03/06/2003US20030043759 LC filter circuit, laminated LC composite component, multiplexer, and radio communication device
03/06/2003US20030043007 Choke coil
03/06/2003US20030042992 Integrated filter balun
03/06/2003US20030042991 Advanced electronic signal conditioning assembly and method
03/06/2003US20030042958 Tunable quadrature phase shifter
03/05/2003EP1289137A1 Integrated RC Filter
03/05/2003CN1401127A Electronic component-use substrate and electronic component
03/05/2003CN1400736A Surface elastic wave separater and communicator
03/04/2003US6529750 Filtering electrical signals in wireless communication systems
03/04/2003US6529604 Scalable stereo audio encoding/decoding method and apparatus
03/04/2003US6529102 LC filter circuit and laminated type LC filter
03/04/2003US6529101 Multilayered LC filter
03/04/2003US6529100 Polyphase filter and receiver using the same
03/04/2003US6529099 180° phase shift circuit having an improved isolation characteristic
03/04/2003US6529091 Absorptive circuit element, absorptive low-pass filter and manufacturing method of the filter
03/04/2003US6528859 Foil wound low profile L-C power processor
02/2003
02/27/2003WO2003017483A1 Tunable quadrature phase shifter
02/27/2003WO2003017479A2 Electronic device and method of testing and of manufacturing
02/27/2003WO2003016943A1 Near object detection system
02/27/2003WO2002051003A3 Generating two signals having a mutual phase difference of 90°
02/27/2003US20030040880 Combining signal images in accordance with signal-to-noise ratios
02/27/2003US20030038689 LC filter circuit, monolithic LC composite component, multiplexer, and radio communication device
02/26/2003EP1286465A1 Microelectromechanical device
02/26/2003EP1285495A2 Method and apparatus for achieving broadband matching of narrow-band resonator filter impedances to loads and sources
02/26/2003EP1285491A2 Method and apparatus for generating a signal having at least one desired output frequency utilizing a bank of vibrating micromechanical devices
02/25/2003US6526263 Antenna impedance adjuster
02/25/2003US6525626 Duplexer and mobile communication device using the same
02/25/2003US6525624 Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal
02/25/2003US6525600 Bandpass filter
02/25/2003US6525558 Programmable impedance control circuit
02/20/2003WO2003015301A1 Bypass filter, multi-band antenna switch circuit, and layered module composite part and communication device using them
02/20/2003WO2003015267A1 Integrated rc filter
02/20/2003WO2003015266A1 Tunable impedance matching circuit for rf power amplifier
02/20/2003US20030035474 System and method for providing variable delay FIR equalizer for serial baseband communications
02/20/2003US20030034796 Flat group-delay low-pass filter, mounting structure thereof, flat group-delay low-pass filter device, and optical signal receiver
02/19/2003EP1284088A1 Termination device for a telephone line
02/18/2003US6522223 Zero-IF-converter with RC filters
02/18/2003US6522220 Frequency variable filter, antenna duplexer, and communication apparatus incorporating the same
02/18/2003US6521976 Multilayer LC composite component
02/13/2003WO2002073798B1 Continuously tunable phase shifter
02/13/2003US20030032396 Electronic apparatus and wireless communication system
02/13/2003US20030030994 Substrate for electronic part and electronic part
02/13/2003US20030030527 Microelectromechanical component
02/13/2003US20030030510 Multilayered LC composite component and method for manufacturing the same
02/13/2003US20030030507 Variable attenuator device having substantially constant impedance
02/13/2003US20030030504 Tunable impedance matching circuit for RF power amplifier
02/11/2003US6519741 Power decoupling circuit generating system and power decoupling circuit generating method
02/11/2003US6518859 Frequency controlled filter for the UHF band
02/06/2003US20030025575 Multilayer filter array
02/06/2003US20030025574 Integrated dual frequency noise attenuator and transient suppressor
02/06/2003US20030025563 Tunable filter and method of tuning a filter
02/06/2003CA2397187A1 Microelectromechanical component
02/05/2003EP1282227A2 A tunable filter and method of tuning a filter
02/05/2003EP1032958B1 Compact antenna feed circuits
02/05/2003CN1395760A Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems
02/05/2003CN1395751A Method of tuning summing network
02/05/2003CN1395366A Electric coupling machinery hand-pass filter
02/05/2003CN1101078C Pin二极管可变衰减器 Pin diode variable attenuator
02/04/2003US6515879 Power source filter circuit that is capable of eliminating noise component supplied from power source and driving noise component generated from induction load simultaneously
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