| Patents for H03H 7 - Multiple-port networks comprising only passive electrical elements as network components (15,104) |
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| 02/10/1998 | US5717323 Resistance reference circuit |
| 02/05/1998 | WO1998005120A1 Dual-band multilayer bandpass filter |
| 02/05/1998 | DE19648418A1 Decentralised subscriber switching system for antenna terminals |
| 02/04/1998 | EP0822658A1 Inductor assembly and method of making same |
| 02/04/1998 | CN1172559A 调谐电路 Tuning circuit |
| 02/04/1998 | CN1172413A Electronic parts |
| 02/03/1998 | US5715531 Synchronous tracking filter circuit for a broadcast satellite tuner |
| 02/03/1998 | US5714239 Composite component |
| 01/29/1998 | WO1998004039A1 Transmission or delay line transformers |
| 01/29/1998 | DE19730140A1 Variable capacitor for LC module |
| 01/22/1998 | DE19637733C1 Current-compensated noise suppression choke |
| 01/21/1998 | CN1170945A Choke coil for suppressing common-mode noise and normal-mode noise |
| 01/15/1998 | WO1998001947A1 Unitary packaging system for a capacitor and inductor |
| 01/08/1998 | DE19728623A1 Branching apparatus for satellite receiving installation |
| 01/07/1998 | EP0817376A2 Reduced phase-shift nonlinear filters |
| 01/07/1998 | EP0815642A1 Non-interruptible tap and method |
| 01/07/1998 | EP0815613A1 Dual frequency antenna with integral diplexer |
| 01/07/1998 | CN1036957C Inductor element for magnetic interference/radio-frequency interference filter |
| 01/06/1998 | US5705966 LC-type dielectric strip line resonator |
| 01/06/1998 | US5705963 LC element comprising a reverse biased pn junction |
| 01/06/1998 | US5705961 Induction device for high radio frequency signal distributor |
| 01/02/1998 | DE19726270A1 Radio device using digital modulation |
| 12/31/1997 | CN1169062A High voltage noise filter and magnetron device using it |
| 12/30/1997 | US5703545 High frequency filter circuit |
| 12/30/1997 | US5703509 Frequency multiplier circuit |
| 12/30/1997 | US5701665 Pi signal frequency filter method of manufacture |
| 12/30/1997 | CA2116615C Two-frequency impedance matching circuit for an antenna |
| 12/24/1997 | WO1997049205A1 Optical receiver |
| 12/24/1997 | WO1997049181A1 Branching device |
| 12/24/1997 | WO1997049180A1 Branching device |
| 12/23/1997 | US5701107 Phase shifter circuit using field effect transistors |
| 12/18/1997 | WO1997048183A1 Method and apparatus for matching a variable load impedance with an rf power generator impedance |
| 12/18/1997 | CA2206379A1 Automatic matching and tuning network |
| 12/16/1997 | US5699071 Glass antenna system for automobile |
| 12/16/1997 | US5699025 Thin film chip-type filter with an external electrode formed on an adhesion layer |
| 12/11/1997 | WO1997047084A1 Method and apparatus for performing bandedge equalization |
| 12/11/1997 | WO1997047083A1 Common mode filter and filter/connector combination |
| 12/11/1997 | DE19724473A1 Suppression filter for reducing switching interference signals in static converter |
| 12/11/1997 | DE19723640A1 Inductor coil for suppressing in phase and antiphase noise |
| 12/11/1997 | CA2257163A1 Common mode filter and filter/connector combination |
| 12/10/1997 | EP0812065A2 Active filter |
| 12/10/1997 | CN1167415A Radio communication device with autenna trigger switch |
| 12/10/1997 | CN1167367A Composite high-frequency element |
| 12/10/1997 | CN1167347A Receiver |
| 12/09/1997 | US5697087 Semiconductor device with a filter formed of 3-element series-and-parallel resonators |
| 12/09/1997 | US5696471 Inductive coupled filter with electrically neutral holes between solid spiral inductors |
| 12/02/1997 | US5694439 Bi-directional low pass filtering method and apparatus |
| 12/02/1997 | US5694093 Wideband IQ modulator with RC/CR automatic quadrature network |
| 12/02/1997 | US5694077 Reduced phase-shift nonlinear filters |
| 11/27/1997 | WO1997044812A1 Method of and apparatus for controlling reactive impedances of a matching network connected between an rf source and an rf plasma processor |
| 11/26/1997 | EP0809321A1 Balancing antenna matching circuit |
| 11/26/1997 | EP0614583A4 Integrated emi/rfi filter magnetics. |
| 11/26/1997 | CN1166070A Method and filter for isolating upstream ingress noise in bi-directional cable system |
| 11/20/1997 | DE19709014C1 Television antenna distributor for satellite and terrestrial signals |
| 11/20/1997 | DE19645567A1 Integrated low pass filter and high pass filter circuits |
| 11/19/1997 | CN1165587A Dual-band antenna system |
| 11/18/1997 | US5689221 Radio frequency filter comprising helix resonators |
| 11/18/1997 | US5689215 Method of and apparatus for controlling reactive impedances of a matching network connected between an RF source and an RF plasma processor |
| 11/13/1997 | DE19718945A1 Upstream interference isolating filter for bidirectional cable system |
| 11/12/1997 | CN1164795A Input circuit for television tuner |
| 11/12/1997 | CN1164782A Integrated receiver |
| 11/11/1997 | US5686806 Low-pass filter and electronic speed control system for electric motors |
| 11/06/1997 | WO1997041639A1 Isolation and signal filter transformer |
| 11/06/1997 | DE19716896A1 LC Filter constructed with laminated block of inner conductors |
| 11/06/1997 | DE19715956A1 Eingangsschaltung für einen Fernsehtuner Input circuit for a television tuner |
| 11/05/1997 | EP0804848A1 Method for establishing a pam signal connection usint a training sequence |
| 11/04/1997 | US5684450 Electricity distribution and/or power transmission network and filter for telecommunication over power lines |
| 10/29/1997 | EP0803981A1 Tuning circuit |
| 10/29/1997 | EP0803979A2 Integrated filter construction |
| 10/29/1997 | CN1163680A CATV tap |
| 10/29/1997 | CN1163679A CATV tap |
| 10/23/1997 | DE19615113A1 Wide band transmitter end stage for short wave range |
| 10/22/1997 | CN1162867A PIN diode variable attenuator |
| 10/15/1997 | EP0801404A1 Induction device for high radio frequency signal distributor |
| 10/15/1997 | EP0556398B1 Wide band frequency allotment type signal selection device utilizing electromagnetic coupling |
| 10/15/1997 | CN1162373A Quadrature modulator with integrated distributed RC filters |
| 10/14/1997 | US5677959 Audio signal source balancing adapters |
| 10/14/1997 | CA2076857C Circuit for an output resonant cavity in a frequency-shift transmitter output stage |
| 10/14/1997 | CA2045330C Fast settling, wide dynamic range vector modulator |
| 10/09/1997 | WO1997037399A1 Antenna coupler for a portable radiotelephone |
| 10/08/1997 | EP0800242A1 High-frequency signal branching device |
| 10/08/1997 | EP0800224A2 Receiving apparatus |
| 10/08/1997 | EP0800218A2 Variable capacitance and method for making the same |
| 10/08/1997 | EP0799525A1 Coupling device connecting an unbalanced signal line to a balanced signal line |
| 10/08/1997 | CN1161759A Method for design of frequency transformation apparatus and narrow-band filter |
| 10/07/1997 | US5675300 In a coaxial cable distribution system |
| 10/07/1997 | US5675277 Phase shifting apparatus and method with frequency multiplication |
| 10/02/1997 | WO1997036307A1 A method of producing an lc-circuit |
| 10/02/1997 | WO1997036306A1 A method of producing an lc-circuit |
| 10/01/1997 | EP0798950A2 High voltage noise filter and magnetron device using it |
| 10/01/1997 | EP0798851A1 Electronic component |
| 10/01/1997 | EP0587886B1 A method for tuning an rf bandpass filter |
| 10/01/1997 | CN1161115A A digital radio system, A digital radio device, and quadrature demodulator |
| 10/01/1997 | CN1160948A Electrical filter |
| 09/30/1997 | US5673220 Random access memory device |
| 09/25/1997 | DE19606697C1 Divider circuit for multi switch |
| 09/24/1997 | EP0797292A1 Integrated receiver |
| 09/24/1997 | CN1160312A Low pass filter for suppressing harmonic of radio transmitter |
| 09/23/1997 | US5670917 AC coupled termination |
| 09/18/1997 | DE19710226A1 Drahtlose Kommunikationsvorrichtung mit antennenaktiviertem Schalter Wireless communication device with antennenaktiviertem switch |