| Patents for H03H 7 - Multiple-port networks comprising only passive electrical elements as network components (15,104) |
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| 10/31/1989 | US4877971 Method and apparatus for distributing a signal |
| 10/25/1989 | EP0338471A2 A dividing cascade network for a support station in a radio telephone network |
| 10/24/1989 | US4876739 TVRO receiver system with low-cost video-noise reduction filter |
| 10/18/1989 | EP0337196A1 Arrangement for impedance transformation |
| 10/18/1989 | EP0337194A1 PI/2 power divider |
| 10/17/1989 | US4875223 Twisted pair adapter |
| 10/17/1989 | US4875019 Receiver preamplifier with tuned circuit adapted for Loran reception |
| 10/03/1989 | US4870729 Method of making a noise filter |
| 09/27/1989 | EP0334703A1 Electromagnetic delay line with several cascaded sections |
| 09/27/1989 | EP0333817A1 Adapter between coaxial cable and twisted pair cables |
| 09/26/1989 | US4870511 Device for demodulating a frequency-modulated signal |
| 09/26/1989 | CA1261496A1 Line equalizer having pulse-width deviation detector for compensating long-term level variations |
| 09/26/1989 | CA1261414A1 Highpass filter of a filter arrangement for a three- phase network connected to converters |
| 09/26/1989 | CA1261002A1 Impedance mismatch detector |
| 09/26/1989 | CA1260077A1 Digital phase shifter |
| 09/20/1989 | EP0333247A1 Power divider for a HF signal |
| 09/20/1989 | CN2044778U 48-gon transformer type phase shifter |
| 09/19/1989 | US4868428 Apparatus for shifting the frequency of complex signals |
| 09/19/1989 | EP0310632A4 Cross-flow filtration device and method of making. |
| 09/13/1989 | EP0331925A2 Branching filter |
| 09/12/1989 | CA1259381A1 Power line filter |
| 09/05/1989 | US4864484 High-pass element of a filter assembly for a line connected with static converters |
| 08/23/1989 | EP0329575A1 Band stop filter attenuation compensating circuit for frequencies below the cut-off frequency |
| 08/23/1989 | EP0329245A1 Integrated low-pass filter arrangement |
| 08/22/1989 | US4859980 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 08/15/1989 | US4857869 High frequency push-pull transformer |
| 08/15/1989 | US4857825 Voltage controlled resistor |
| 08/15/1989 | US4857777 Monolithic microwave phase shifting network |
| 08/08/1989 | US4855695 Automated microwave tuning system for de-emulsifier systems |
| 08/01/1989 | US4853802 Single stage feedforward equalizer |
| 08/01/1989 | US4853659 Planar pi-network filter assembly having capacitors formed on opposing surfaces of an inductive member |
| 07/26/1989 | EP0325379A2 Value determining method for line filter and its components |
| 07/26/1989 | EP0205563B1 System for selectively coupling a plurality of data stations into a single communications path |
| 07/25/1989 | US4851795 Miniature wide-band microwave power divider |
| 07/18/1989 | US4849721 Bandpass filter for a CATV converter |
| 07/18/1989 | US4849663 Switchable smoothing network |
| 07/11/1989 | US4847575 Noise filter having multiple layers rolled into an elliptical shape |
| 07/04/1989 | US4845758 Equalizer with adjustable band filters and a digital filter suitable for use in the equalizer |
| 07/04/1989 | US4845462 Linear integrated resistor |
| 07/04/1989 | US4845447 Video filter assembly |
| 06/29/1989 | WO1989005858A1 Cucumber mosaic virus coat protein gene |
| 06/27/1989 | US4843589 Word storage device for use in language interpreter |
| 06/13/1989 | US4839617 Bandpass filter circuit arrangement |
| 06/13/1989 | US4839616 Broadband impedance transformer |
| 06/13/1989 | US4839531 Computer network interconnecting apparatus |
| 06/07/1989 | EP0318790A1 High-pass filter of a filter arrangement for a network connected to a power converter |
| 06/07/1989 | CN1033339A Bandwidth limiting circuit with variable bandwidth |
| 05/31/1989 | EP0318119A2 Bandpass filter circuit arrangement |
| 05/31/1989 | EP0318118A2 Bandpass filter circuit arrangement |
| 05/30/1989 | US4835497 AC line filter |
| 05/10/1989 | EP0314883A2 Terminal impedance for high-frequency lines or circuits |
| 05/09/1989 | US4829272 Electromagnetic variable delay line system |
| 05/09/1989 | US4829257 Method and apparatus for continuously shifting phase of an electronic signal |
| 05/03/1989 | EP0314360A2 Pulse conditioning circuit |
| 04/25/1989 | CA1253203A1 Phase shifter |
| 04/20/1989 | WO1989003603A1 Computer network interconnecting apparatus |
| 04/20/1989 | WO1989003600A1 Constant impedance high frequency coaxial connector |
| 04/12/1989 | EP0311406A2 Transmisson line |
| 04/12/1989 | EP0310632A1 Cross-flow filtration device and method of making. |
| 04/12/1989 | CN2035940U Integrated attenuator |
| 04/11/1989 | US4821005 Electrical circuit component assembly for circuit boards |
| 04/11/1989 | US4821003 Electromagnetic variable delay line with linear compensation |
| 04/04/1989 | US4818960 Composite part and method of manufacturing same |
| 03/30/1989 | DE3730303A1 Tunable helical circuit |
| 03/30/1989 | DE3730302A1 Tunable helical band-pass filter for the radio-frequency region |
| 03/29/1989 | CN2035105U Sound volume light-controlled electronic time giving clock |
| 03/28/1989 | US4817196 Apparatus for tuning the antenna of a miniature personal communications device |
| 03/28/1989 | US4817189 Directional high frequency broadband transformer made by printed circuit technique |
| 03/28/1989 | US4816784 Balanced planar transformers |
| 03/23/1989 | WO1989002684A1 Adapter between coaxial cable and twisted pair cables |
| 03/23/1989 | DE3830596A1 Gedruckte leiterplatte fuer eine taktsignal-speiseschaltung Printed circuit board for a clock signal-feed circuit |
| 03/23/1989 | DE3730578A1 Low-pass filter |
| 03/21/1989 | US4814730 Quadrature combiner |
| 03/08/1989 | CN2033954U Super antijamming device |
| 03/07/1989 | US4810949 Digitally controlled monotonic attenuator |
| 02/28/1989 | US4808860 Filter circuit for a MOS-type integrated device, and an integrated device comprising such a filter circuit |
| 02/21/1989 | US4806944 Switchable matching network for an element of a steerable antenna array |
| 02/21/1989 | CA1250352A1 Pin diode switched rf signal attenuator |
| 02/16/1989 | DE3804331A1 Low-pass filter |
| 02/16/1989 | DE3726362A1 RF terminating impedance |
| 02/15/1989 | CN1031165A Signal discriminator and method of signal discrimination |
| 02/14/1989 | US4804962 Clutter elimination radar |
| 02/08/1989 | EP0302746A2 Apparatus for and method of discriminating signals |
| 02/08/1989 | EP0302162A2 Apparatus for matching unbalanced R.F. baseband signals to balanced signals on a twisted two-wire line |
| 02/07/1989 | US4803549 Low-pass filter for limiting the frequency band of a luminance signal |
| 02/07/1989 | US4803420 Method of determining the position of the tap on a resistance teletransmitter |
| 01/31/1989 | US4802239 Switch distributing apparatus for community reception |
| 01/31/1989 | US4801904 Chip-like LC filter |
| 01/31/1989 | US4801901 Non-ferrite non-reciprocal phase shifter and circulator |
| 01/25/1989 | EP0300893A1 Ultra-high frequency delay device |
| 01/25/1989 | EP0300524A1 Variable attenuating device for insertion between an emitter circuit and a load circuit |
| 01/24/1989 | US4800346 Delay line and its manufacturing method |
| 01/24/1989 | US4800344 Substantially attenuates common mode signals |
| 01/24/1989 | US4800264 Manually controlled static switch |
| 01/17/1989 | US4799066 Impedance matching arrangement |
| 01/11/1989 | EP0298845A1 Method and apparatus for the protection against a jammer in a radio receiver comprising several switchable antennas, and their use in radio direction finders |
| 01/11/1989 | EP0298574A1 Linear integrated resistor |
| 01/04/1989 | EP0297709A2 Compact filter |
| 01/03/1989 | US4795990 Trap circuit with two variable inductors |
| 12/28/1988 | CN88104618A Unbalanced complete cut-off network |