| Patents for H03H 7 - Multiple-port networks comprising only passive electrical elements as network components (15,104) |
|---|
| 10/02/1990 | US4961060 Electromagnetic delay line comprising several cascaded sections |
| 10/02/1990 | US4961059 Combined RFI rejection and intergrating two-section filter |
| 09/26/1990 | EP0388980A2 LC circuit incorporated ceramic substrate |
| 09/26/1990 | CN2062923U Wide-band antenna amplifier with trap network |
| 09/25/1990 | US4959535 Optical receiver circuit including a filter network to minimize noise |
| 09/20/1990 | DE3908902A1 Device for suppressing line-conducted noise signals in an electronic module |
| 09/20/1990 | CA2008072A1 Electrically-tunable bandpass filter |
| 09/19/1990 | EP0387954A1 Pass-band filter with adjustable band-width |
| 09/18/1990 | US4957927 (Diarylmethoxy alkyl)-1-pyrrolidines and piperidines having cardiovascular activity |
| 09/11/1990 | US4956710 Television receiver tuner high pass input filter with CB trap |
| 09/04/1990 | US4954790 Enhanced coupled, even mode terminated baluns, and mixers and modulators constructed therefrom |
| 08/28/1990 | US4952893 Attenuating circuit |
| 08/28/1990 | US4952891 Filter circuit with automatic tuning |
| 08/21/1990 | US4951012 Transformer arrangement to accomplish impedance transformation |
| 08/21/1990 | US4951009 Tuning method and control system for automatic matching network |
| 08/14/1990 | US4949057 Distributed constant type delay line device and a manufacturing method thereof |
| 08/09/1990 | WO1990009056A1 Inverter |
| 08/08/1990 | CN2060269U V frequency channel mixer |
| 08/07/1990 | US4947286 Multilayer capacitor device |
| 08/07/1990 | CA1272513A1 Filtering of electromagnetic interference from a digital signal |
| 07/31/1990 | US4945332 Noise suppression inductor |
| 07/31/1990 | US4945321 For dividing an input signal in two signal paths |
| 07/31/1990 | US4945319 High frequency impedance transformer |
| 07/31/1990 | US4945317 Matching circuit |
| 07/25/1990 | EP0379404A2 A multilayer hybrid circuit |
| 07/17/1990 | US4942375 Variable attenuation device intended to be inserted between a transmitter circuit and load circuit |
| 07/11/1990 | EP0377242A1 Multiple branch device with a return path |
| 07/10/1990 | CA1271517A1 Filter using zno arresters as small capacitors in normal operation |
| 07/05/1990 | DE3938409A1 Universal sensor operating circuit - has generator, waveguide, output-coupling and antenna |
| 07/03/1990 | US4939787 Temperature controlled resistive-liquid dummy load |
| 07/03/1990 | US4939779 Temperature compensated trap filter |
| 07/03/1990 | US4939486 Filter equipment for power lines |
| 07/03/1990 | US4937936 Method for retrofitting a noise reducing filters to an electrical coupling connector. |
| 06/27/1990 | EP0374744A2 Microwave integrated circuit |
| 06/26/1990 | US4937541 Loaded lange coupler |
| 06/26/1990 | CA1270912A1 Low impedance switch attenuator |
| 06/22/1990 | CA2005182A1 Microwave integrated circuit |
| 06/19/1990 | CA1270538A1 Normalized frequency domain lms adaptive filter |
| 06/13/1990 | DE3841696A1 Radio-frequency broadband transmission circuit |
| 06/05/1990 | US4931743 Noise reduction circuit |
| 05/30/1990 | EP0370714A1 A wave reception apparatus for a motor vehicle |
| 05/22/1990 | US4928108 Electrical signal separating device having isolating and matching circuitry for split passband matching |
| 05/16/1990 | EP0368390A1 Amplification system for teledistribution |
| 05/16/1990 | CN1042182A Cucumber mosaic virus coat protein gene |
| 05/09/1990 | EP0367555A2 Reception system on window glass |
| 05/08/1990 | US4924188 Spread spectrum receiver having phase shifter for effecting phase synchronization of two convolvers |
| 04/25/1990 | EP0365091A2 Filter circuit arrangement |
| 04/25/1990 | EP0364879A2 Gallium arsenide monolithically integrated sampling head using equivalent time sampling having a bandwidth greater than 100 GHZ |
| 04/24/1990 | US4920563 Circuit compensating for the attenuation of a notch filter at frequencies less than cut-off frequency thereof |
| 04/24/1990 | US4920329 Impedance-compensated thick-film resistor |
| 04/19/1990 | DE3834732A1 Transmitting arrangement |
| 04/17/1990 | US4918591 High frequency interference suppression filter for circuits to be connected to a conductor |
| 04/17/1990 | US4917630 Constant impedance high frequency coaxial connector |
| 04/17/1990 | CA1267943A1 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 04/10/1990 | US4916415 Balanced, impedance matched, coupling device |
| 04/03/1990 | US4914408 Asymmetric polyphase filter |
| 03/28/1990 | EP0360685A1 1-[(Diaryl methoxy)alkyl] pyrrolidines and piperidines, process for their preparation and pharmaceutical compounds containing them |
| 03/28/1990 | EP0359983A1 Inductorless filter |
| 03/28/1990 | CN1007395B Switch dividing device for common reception |
| 03/27/1990 | US4912394 Attenuator circuit |
| 03/21/1990 | EP0358649A1 Arrangement for filtering an incoming fm signal. |
| 03/20/1990 | US4910482 AC line filter |
| 03/20/1990 | US4910481 For radio communication equipment |
| 03/07/1990 | EP0356572A1 Duplexer |
| 03/06/1990 | CA1266505A1 D.c. to d.c. converter |
| 02/28/1990 | EP0355979A2 Power amplifying assembly |
| 02/27/1990 | US4905239 R. F. signal distribution |
| 02/27/1990 | US4904967 LC composite component |
| 02/27/1990 | US4904951 Method and circuit for reducing effects of distributed capacitance associated with large thin film resistors |
| 02/20/1990 | US4903035 Electrical signal separating device having isolating and matching circuitry |
| 02/20/1990 | US4903034 Electrical signal separating device having isolating and matching circuitry |
| 02/20/1990 | US4903032 Method and device for protection against a jammer in a radio station comprising several change-over antennas and their use for the making of radiogoniometers |
| 02/20/1990 | US4903006 Power line communication system |
| 02/20/1990 | US4902989 Local area network coaxial cable connection device |
| 02/13/1990 | US4901052 For providing uniform temperature |
| 02/13/1990 | US4901043 Compact filter having a multi-compartment housing |
| 02/13/1990 | US4901042 High frequency power divider |
| 01/31/1990 | EP0352805A2 Distributed constant type delay line device and a manufacturing method thereof |
| 01/30/1990 | US4897561 Apparatus for and method of discriminating signals |
| 01/30/1990 | CA1265214A1 Electrical circuit for use with a four-pole device |
| 01/16/1990 | US4894629 Bandpass filter having magnetically coupled resonators |
| 12/27/1989 | EP0347822A1 Filtering device using sinusoidal roll-off at the intermediate frequency in the receiver of a digital modem |
| 12/27/1989 | EP0347604A2 Direction coupler-distributor |
| 12/26/1989 | US4890062 Automatic impedance adjuster for MRI system |
| 12/20/1989 | EP0346682A1 Circuit arrangement for the adjustment of the phase of a signal |
| 12/20/1989 | CN2049846U Uv-model aerial hybrid device |
| 12/19/1989 | US4888675 Switching power supply filter |
| 12/19/1989 | US4888568 LC Filter |
| 12/13/1989 | CN2049438U V-antenna mixer |
| 12/13/1989 | CN2049437U U/v distributor for antenna input of monochrome tv set |
| 12/06/1989 | EP0344852A1 Asymmetric polyphase filter |
| 12/06/1989 | EP0344458A1 Bridge circuit with load-compensating resistance |
| 12/05/1989 | US4885562 Microwave delay circuit having a bridge-T circuit |
| 12/05/1989 | US4885557 Broadband constant voltage multicoupler |
| 11/29/1989 | CN1005932B Mutual inductance nmr rf coil matching device |
| 11/23/1989 | DE3842425C1 Method and device for the temperature compensation of an attenuator |
| 11/21/1989 | CA1263150A1 Bandswitched interstage coupling network including a high side coupled capacitor |
| 11/15/1989 | EP0341239A1 Antenna tuning apparatus for personal communications devices. |
| 11/14/1989 | US4881050 Thin-film microwave filter |
| 11/02/1989 | EP0339067A1 Constant impedance high frequency coaxial connector. |