| Patents for H01P 5 - Coupling devices of the waveguide type (11,303) |
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| 01/02/1991 | EP0404905A1 Improved feed waveguide for an array antenna |
| 01/01/1991 | USH880 In-plane transmission line crossover |
| 12/25/1990 | US4980662 Multiplexed microwave filter, and method of adjusting such a filter |
| 12/18/1990 | US4978933 Wideband microwave hybrid circuit with in-phase or phase-inverted output signals |
| 12/18/1990 | CA1278051C Balanced planar transformers |
| 12/04/1990 | US4975625 Electrodeless lamp which couples to small bulb |
| 12/03/1990 | WO1990015451A1 Capacitively compensated microstrip directional coupler |
| 12/03/1990 | CA2053897A1 Capacitively compensated microstrip directional coupler |
| 11/27/1990 | US4973925 Double-ridge waveguide to microstrip coupling |
| 11/27/1990 | US4973924 Mode converter for microwave power transmission circuit |
| 11/22/1990 | EP0398419A2 One-octave 90 degrees 3dB directional coupler embodied in microstrip and slotline |
| 11/13/1990 | US4970477 Microwave adjustment device for a transition between a hollow waveguide and a plane transmission line |
| 11/07/1990 | EP0396430A2 Radio frequency network |
| 11/06/1990 | US4968958 Broad bandwidth planar power combiner/divider device |
| 11/05/1990 | CA2015945A1 Radio frequency network |
| 11/01/1990 | WO1990013151A1 Generation of a high-frequency field in a useful volume |
| 10/30/1990 | US4967172 Microwave phase shifter circuit |
| 10/30/1990 | US4967171 Microwave integrated circuit |
| 10/23/1990 | US4965530 Parallelled amplifier with switched isolation resistors |
| 10/23/1990 | CA1275459C Directional coupler |
| 10/18/1990 | DE3912569A1 Verfahren und vorrichtung zur erzeugung eines elektrischen hochfrequenzfeldes in einem nutzraum Method and device for generation of an electrical high-frequency field in a useful space |
| 10/17/1990 | EP0392999A1 A field-twisting waveguide junction |
| 10/10/1990 | EP0391596A2 Reduced-height waveguide-to-microstrip transition |
| 10/04/1990 | DE3933439A1 Wide band, quadrature, hybrid waveguide - has four-gate of four, ring forming, quarter-wavelength conductors with alternating wave resistance |
| 10/03/1990 | EP0389672A2 Hybrid mode RF phase shifter |
| 10/02/1990 | US4961061 Phase-shifting combiner for electromagnetic waves |
| 10/02/1990 | US4961050 Test fixture for microstrip assemblies |
| 09/26/1990 | EP0389025A2 Microwave frequency converter |
| 09/19/1990 | EP0388377A1 An arrangement for supplying power to a hollow wave-guide intended for electromagnetic microwaves |
| 09/19/1990 | EP0387955A1 Package for hyperfrequency integrated circuit |
| 09/11/1990 | US4956622 Waveguide H-plane junctions |
| 09/11/1990 | US4956621 Three-state, two-output variable RF power divider |
| 09/11/1990 | US4956614 Device including a radial combiner for electromagnetic waves |
| 09/04/1990 | US4955079 Waveguide excited enhancement and inherent rejection of interference in a subharmonic mixer |
| 08/30/1990 | DE4006282A1 High speed signal transmission line for IC network - uses microstrip conductor path configuration with capacitance zones on either side of transmission line |
| 08/30/1990 | DE3928158C1 Junction box branching or combining HF signals - assigns terminals for further coaxial leads to coaxial lead vertically to inner conductor |
| 08/28/1990 | US4952916 Power transmission |
| 08/28/1990 | US4952895 Planar airstripline-stripline magic-tee |
| 08/28/1990 | US4952894 Waveguide feed network for antenna array |
| 08/28/1990 | US4952892 Wave guide impedance matching method and apparatus |
| 08/28/1990 | CA1273429A1 Broadbanded microstrip antenna having series- broadbanding capacitance integral with feedline connection |
| 08/22/1990 | EP0383311A2 Microwave power amplifier using phase inverters |
| 08/22/1990 | EP0383292A2 Electronic circuit device |
| 08/22/1990 | EP0383287A1 Adaptive phase and amplitude distributor |
| 08/21/1990 | US4951012 Transformer arrangement to accomplish impedance transformation |
| 08/21/1990 | US4951011 Impedance matched plug-in package for high speed microwave integrated circuits |
| 08/16/1990 | EP0382428A2 Test fixture for microstrip assemblies |
| 08/15/1990 | CN1009233B Microstrip transmission line for coupling to dielectric resonator |
| 08/08/1990 | EP0381398A2 Automatic impedance adjusting apparatus for microwave load and automatic impedance adjusting method therefor |
| 08/07/1990 | US4947144 Distribution device for distributing very high data rate digital signals |
| 08/07/1990 | US4947143 Multiport power divider-combiner |
| 08/02/1990 | DE4002678A1 Kreisschlitz-arrayantenne mit abgleichteil Circular slot-array antenna with matching part |
| 08/02/1990 | DE3902593A1 Arrangement for rotating the polarisation plane of a linearly polarised microwave through 90@ |
| 07/31/1990 | US4945321 For dividing an input signal in two signal paths |
| 07/26/1990 | DE3901669A1 Low-inductance electrical connection between two planar circuits and method for producing a connection of this kind |
| 07/25/1990 | EP0379202A2 Phase inverter and push-pull amplifier using the same |
| 07/03/1990 | US4939484 Transmission channel coupler for antenna |
| 06/28/1990 | WO1990007201A1 Improved feed waveguide for an array antenna |
| 06/27/1990 | EP0374744A2 Microwave integrated circuit |
| 06/26/1990 | US4937542 Dielectric filter |
| 06/26/1990 | US4937541 Loaded lange coupler |
| 06/22/1990 | CA2005182A1 Microwave integrated circuit |
| 06/20/1990 | EP0373634A2 Waveguide matrix switch |
| 06/12/1990 | US4933651 Multichannel combiner/divider |
| 05/30/1990 | EP0370891A1 Microwave propagating device for moving webs, especially textile webs |
| 05/29/1990 | US4929955 Circular waveguide amplitude commutator |
| 05/23/1990 | CN2057534U Largy power sampling load of adjustable standing-wave ratio waveguide |
| 05/22/1990 | US4928078 Branch line coupler |
| 05/22/1990 | US4928077 Tunable microwave coupler with mechanically adjustable conductors |
| 05/17/1990 | WO1990005388A1 Ceramic filter having integral phase shifting network |
| 05/15/1990 | US4926189 High-gain single- and dual-polarized antennas employing gridded printed-circuit elements |
| 05/15/1990 | US4926145 Radial power combiner/divider with mode suppression |
| 05/09/1990 | EP0367543A2 Overlapped interfaces between coplanar transmission lines which are tolerant to transverse and longitudinal misalignment |
| 05/09/1990 | EP0367267A2 Scanning tip for electromagnetic radiation |
| 05/09/1990 | EP0367061A2 Ceramic filter having integral phase shifting network |
| 05/08/1990 | US4924196 Waveguide matrix switch |
| 05/01/1990 | US4922325 Multilayer ceramic package with high frequency connections |
| 05/01/1990 | US4922215 Power divider in waveguide form |
| 04/18/1990 | EP0363841A2 Plural layer coupling system |
| 04/17/1990 | US4916808 Process for fabricating a sculptured stripling interface conductor |
| 04/12/1990 | DE3926187A1 Schlitzstrahler Slot radiator |
| 04/10/1990 | US4916415 Balanced, impedance matched, coupling device |
| 03/28/1990 | EP0360700A1 Magneto-electric probe and method of using same |
| 03/28/1990 | CN1040890A Slot array antenna |
| 03/14/1990 | EP0358497A2 Broadbrand microstrip to coplanar waveguide transition by anisotropic etching of gallium arsenide |
| 03/14/1990 | EP0167574B1 Transition between a continuous and a corrugated circular waveguides for efficient launch of signals in two frequency bands |
| 03/08/1990 | DE3924426A1 Broadband 3 DB 90 deg. coupler for microwaves - comprises four quarter-wave line lengths making ring connected via half-wave lines to ports |
| 03/07/1990 | EP0357140A1 Broad bandwidth planar power combiner/divider device |
| 03/07/1990 | CN1040288A Slot array antenna |
| 03/06/1990 | US4906956 On-chip tuning for integrated circuit using heat responsive element |
| 03/06/1990 | US4906954 Directional coupler device |
| 03/06/1990 | US4906953 Broadband microstrip to coplanar waveguide transition by anisotropic etching of gallium arsenide |
| 03/06/1990 | US4906952 Asymmetric waveguide load |
| 03/06/1990 | US4906951 Birefringent corrugated waveguide |
| 03/06/1990 | US4906945 Millimeter-wave/submillimeter-wave oscillator |
| 02/28/1990 | EP0355979A2 Power amplifying assembly |
| 02/28/1990 | EP0355898A1 A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| 02/28/1990 | EP0355338A1 Wide-band information and/or instruction transmitting device between a moving element in a plane and a control station |
| 02/27/1990 | US4904966 Suspended substrate elliptic rat-race coupler |
| 02/20/1990 | US4902991 Radio frequency signal combining/sorting device |