| Patents for H03H 7 - Multiple-port networks comprising only passive electrical elements as network components (15,104) |
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| 12/27/1988 | US4794353 Dissipative low-pass filter |
| 12/21/1988 | CN88102082A Filtering apparatus of fm ultrashort wave receiving signal |
| 12/21/1988 | CN87201906U Double-hole socket for two loads |
| 12/20/1988 | US4792920 Interface providing impedance matching by selective connection of a resistor array to a power supply |
| 12/20/1988 | US4792782 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 12/20/1988 | US4792773 Ultra high frequency circuit with low parasite capacities |
| 12/15/1988 | WO1988010034A1 Optical receiver circuit and method |
| 12/15/1988 | DE3724727C1 Analog all-pass filter having a T-element |
| 12/14/1988 | EP0295107A1 Optical receiver circuit and method |
| 12/06/1988 | US4789845 Broad band hybrid signal splitter |
| 11/17/1988 | DE3727392C1 Device for symmetrical addition of signal sources |
| 11/15/1988 | CA1244936A1 High frequency antenna tuning device |
| 11/08/1988 | US4783643 Impedance transforming circuit for multibit parallel digital circuits |
| 11/01/1988 | US4782311 Three terminal filter |
| 11/01/1988 | US4782310 High frequency filter assembly for electric instrument |
| 10/20/1988 | WO1988008223A1 Arrangement for filtering an incoming fm signal |
| 10/20/1988 | WO1988008222A1 Arrangement for filtering an incoming fm-uhf signal |
| 10/18/1988 | US4779068 Noise suppression inductor |
| 10/12/1988 | EP0285610A1 Filtering of electromagnetic interference from a digital signal |
| 10/12/1988 | CN87216817U Multi-functional all-channel nondirectional indoor antenna |
| 10/11/1988 | US4777461 LC composite component |
| 10/11/1988 | US4777458 Thin film power coupler |
| 10/11/1988 | US4777455 Power supply cord with a noise filter |
| 10/06/1988 | WO1988007398A1 Cross-flow filtration device and method of making |
| 10/05/1988 | EP0187771B1 High frequency transformer |
| 10/04/1988 | CA1242765A1 Arrangement for combining the output signals from a plurality of transmitters tuned to the same frequency |
| 09/29/1988 | DE3708759A1 Variably adjustable attenuator |
| 09/28/1988 | EP0284442A2 R.F. signal distribution |
| 09/27/1988 | US4774481 Wideband transmission line signal combiner/divider |
| 09/22/1988 | WO1988007288A1 Monolithic microwave phase shifting network with multiple outputs between which a constant phase difference is maintained over a large frequency range |
| 09/20/1988 | US4772862 Filter apparatus |
| 09/15/1988 | DE3706922A1 Capacitive isolating element |
| 09/14/1988 | EP0282293A2 Non-ferrite non-reciprocal phase shifter and circulator |
| 09/06/1988 | US4769848 Loudspeaker |
| 08/30/1988 | US4768094 Noise suppressing circuit with gain control |
| 08/30/1988 | US4768002 Power filter resonant frequency modulation network |
| 08/24/1988 | EP0279137A1 Dissipating low pass filter |
| 08/23/1988 | US4766402 Apparatus for matching unbalanced R. F. baseband signals to balanced signals on a twisted two-wire line |
| 08/16/1988 | CA1240791A1 Television signal input filter |
| 08/16/1988 | CA1240743A1 System for selectively coupling a plurality of stations into a single communications path |
| 08/11/1988 | DE3801188A1 Elektrischer rauschabsorber Electrical noise absorber |
| 08/10/1988 | EP0277501A2 Bridge circuit with load distribution resistors |
| 08/09/1988 | US4763087 Impedance matching network |
| 08/09/1988 | CA1240372A1 Broad band, thin film attenuator and method for construction thereof |
| 08/03/1988 | EP0276684A2 Foil-roll electronic part and process of producing same |
| 07/26/1988 | US4760485 Zine oxide surge arresters |
| 07/26/1988 | US4760356 Power line filter |
| 07/26/1988 | US4760231 Noise filter for electric apparatus |
| 07/20/1988 | EP0275093A2 Distributed constant type noise filter |
| 07/20/1988 | EP0274767A1 Method and circuit for determining the pick-off position of a remotely controlled resistance transmitter |
| 07/19/1988 | US4758808 Impedance element mounted on a pc board |
| 07/19/1988 | US4758805 High frequency interference prevention filter for electric instruments |
| 07/19/1988 | US4758740 Circuit for compensating the temperature dependence of gate transit times |
| 07/19/1988 | CA1239483A1 Bond wire transmission line |
| 07/14/1988 | WO1988005213A1 Antenna tuning apparatus for personal communications devices |
| 07/12/1988 | US4757284 Dielectric filter of interdigital line type |
| 07/12/1988 | US4757282 Line filter |
| 07/07/1988 | DE3644477A1 Method for impedance transformation |
| 07/07/1988 | DE3644476A1 Method for impedance transformation |
| 07/06/1988 | EP0273793A1 Highly selective rejection circuit, and use of such a circuit |
| 07/05/1988 | US4755776 Tap device for broadband communications systems |
| 06/29/1988 | EP0272726A1 Device for demodulating a frequencymodulated signal |
| 06/28/1988 | US4754242 Resonator |
| 06/28/1988 | US4754240 Pin diode attenuators |
| 06/21/1988 | US4752752 Noise filter |
| 06/08/1988 | CN87210281U Radio interference suppressor |
| 06/07/1988 | US4750076 Geometric arrangement for filter capacitors |
| 05/31/1988 | US4748534 Device for establishing between conductors a galvanic connection, which is blocked for the transmission of electromagnetic radiation |
| 05/24/1988 | US4746971 Comb-shape response filter having ultrasonic delay line |
| 05/18/1988 | EP0267403A2 Capacitive separating circuit |
| 05/18/1988 | EP0148218B1 Method for adaptation of a transmission chain for audio signals |
| 05/10/1988 | US4743873 Highpass filter of a filter arrangement for a three-phase network connected to converters |
| 05/05/1988 | DE3637154A1 Dual radiofrequency distributor |
| 04/28/1988 | DE3702372A1 A process of damping frequency and filter |
| 04/27/1988 | EP0163685B1 Apparatus for correcting frequency-dependent attenuation of the transmitting medium in signal transmission |
| 04/19/1988 | US4739247 Bidirectional RF switch matrix module apparatus |
| 04/19/1988 | CA1235463A1 Rf circuit switching |
| 04/18/1988 | EP0247157A4 Adaptive impedance mismatch detector system. |
| 04/13/1988 | CN85102345B Integrated electric filter circuit |
| 04/12/1988 | US4737744 Integrated capacitors for forming components of bandpass filters |
| 04/12/1988 | US4737662 Differential phase shifter |
| 04/07/1988 | WO1988002576A1 Filtering of electromagnetic interference from a digital signal |
| 04/05/1988 | US4736171 Signal processing system |
| 03/30/1988 | EP0261935A2 Electronically controlled matching circuit |
| 03/29/1988 | US4734662 Comb filter |
| 03/23/1988 | EP0260782A1 Low impedance switched attenuator |
| 03/22/1988 | US4733209 Ceramic Scrambler module |
| 03/22/1988 | US4733203 Passive phase shifter having switchable filter paths to provide selectable phase shift |
| 03/15/1988 | US4731877 Tunable lowpass-highpass switching filter |
| 03/09/1988 | EP0259217A2 DC offset network for RF signals |
| 03/09/1988 | EP0258576A2 Harmonic currents isolating network |
| 03/01/1988 | US4728911 Loss-impaired filter apparatus for suppressing radio frequency interference on a two-wire line |
| 02/25/1988 | WO1988001439A1 Dc offset network for rf signals |
| 02/25/1988 | DE3628024A1 Aerial matching circuit for rapid frequency change - has frequency changing circuit(s) between transformer circuit and aerial |
| 02/16/1988 | US4725767 Phase shifter |
| 02/16/1988 | US4725739 AC branch power distribution filter |
| 02/09/1988 | US4724407 Integrated filter circuit having switchable selected parallel filter paths |
| 02/03/1988 | EP0255195A2 Notch filter |
| 02/03/1988 | CN85107611B Band-pass filter with some dielectric resonators |
| 01/26/1988 | US4722027 Hybrid circuit device |