| Patents for H01P 5 - Coupling devices of the waveguide type (11,303) |
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| 09/17/1991 | US5049893 Microwave energy distributor capable of radiating directly |
| 09/17/1991 | US5049843 Strip-line for propagating microwave energy |
| 09/10/1991 | US5047738 Ridged waveguide hybrid |
| 09/10/1991 | US5047737 Directional coupler and termination for stripline and coaxial conductors |
| 09/05/1991 | WO1991013473A1 Horn radiator for electromagnetic waves |
| 09/04/1991 | EP0444820A2 MMIC package and connection |
| 09/04/1991 | EP0444805A1 Coaxial transmission line to strip line coupler |
| 09/03/1991 | US5045825 Coupling port for multiple capacitor, distributed inductor resonator |
| 09/03/1991 | US5045820 Three-dimensional microwave circuit carrier and integral waveguide coupler |
| 08/28/1991 | EP0443526A1 A microwave coupling arrangement |
| 08/28/1991 | EP0443484A1 Power link, protected by redundancy, for microwave signals |
| 08/27/1991 | US5043684 Compact high power, high directivity, waveguide directional coupler utilizing reactively loaded junction |
| 08/27/1991 | US5043683 Waveguide to microstripline polarization converter having a coupling patch |
| 08/27/1991 | US5043671 Device for addition of the power from two alternating signals in a linear accelerator |
| 08/24/1991 | CA2036830A1 Microwave signal power link with redundancy protection |
| 08/22/1991 | WO1991012636A1 Hybrid directional coupler circuit |
| 08/22/1991 | DE4005230A1 UHF filter circuitry - has extra conductor, as output coupling bracket, adjacent to output circuit |
| 08/20/1991 | US5041803 Automatic load matching circuit for microwaves using multi-element matching device |
| 08/07/1991 | EP0439928A1 Directional stripline structure and manufacture |
| 08/07/1991 | EP0439448A1 Improved device for combining two alternating signals of identical frequency |
| 07/24/1991 | EP0142555B1 Dual band phased array using wideband elements with diplexer |
| 07/23/1991 | US5034708 Programmable broadband electronic tuner |
| 07/17/1991 | EP0437115A2 Broadband stripline coupler |
| 07/16/1991 | US5032803 Directional stripline structure and manufacture |
| 07/16/1991 | US5032802 Hybrid directional coupler circuit |
| 07/02/1991 | US5028891 Arrangement for supplying power to a hollow waveguide intended for electromagnetic microwaves |
| 07/02/1991 | US5028880 Microwave power amplifier using phase inverters |
| 06/27/1991 | WO1991009432A1 Impedance-matching coupler |
| 06/26/1991 | EP0434144A1 Balun |
| 06/25/1991 | US5027086 Dielectric resonator oscillator power combiner |
| 06/19/1991 | EP0432775A2 Switched-loop 180 degrees phase bit device with aperture shutter capabilities |
| 06/18/1991 | US5025233 Broadband power divider |
| 06/18/1991 | US5025232 Monolithic multilayer planar transmission line |
| 06/18/1991 | US5023993 Method for manufacturing a high-performance package for monolithic microwave integrated circuits |
| 06/05/1991 | EP0430489A2 Broadband balun |
| 06/05/1991 | CN1012779B Surface mount filter with integral transmission line connection |
| 06/04/1991 | US5021759 Package for very high frequency integrated circuits |
| 06/04/1991 | US5021755 N-way signal splitter with isolated outputs |
| 05/29/1991 | EP0429042A1 A microstrip line having a changed effective line length and a method of manufacturing same |
| 05/29/1991 | CN1051827A Balancing loop |
| 05/28/1991 | US5019793 Digitally implemented variable phase shifter and amplitude weighting device |
| 05/21/1991 | US5017937 Wideband horn antenna |
| 05/21/1991 | US5017897 Split ring resonator bandpass filter with differential output |
| 05/21/1991 | US5017892 Waveguide adaptors and Gunn oscillators using the same |
| 05/15/1991 | EP0427482A2 Magnetrons |
| 05/15/1991 | EP0426988A1 Balun loop |
| 05/15/1991 | EP0426972A1 Flat antenna |
| 05/10/1991 | CA2026846A1 Balancing loop |
| 05/07/1991 | US5014022 Switched-loop/180 degree phase bit with aperture shutter capabilities |
| 05/07/1991 | CA1283958C Suspended stripline rat race mixer with simplified i.f. extraction |
| 04/30/1991 | US5012209 Broadband stripline coupler |
| 04/25/1991 | DE4003955C1 Slit waveguide signal directional coupler - provides contactless signal transmission between moving and fixed parts e.g. in suspended railway |
| 04/24/1991 | EP0424108A2 High frequency transmission line circuit |
| 04/23/1991 | US5010305 Microwave integrated circuit |
| 04/23/1991 | CA1283464C Microwave transformer |
| 04/17/1991 | EP0422430A2 Coupling structure between microwaves and plasma |
| 04/16/1991 | US5008639 Coupler circuit |
| 04/16/1991 | CA1283185C Device for connecting two coaxial microwave structures having different diameters |
| 04/11/1991 | DE3933055A1 180 Deg. phase reversal amplitude modulator - has one or two conductor structure and third structure coupled as asymmetric or symmetric gate of second symmetric member |
| 04/10/1991 | EP0421036A1 Device for adding R.F. signals |
| 04/09/1991 | US5006821 RF coupler having non-overlapping off-set coupling lines |
| 04/09/1991 | CA1282881C Microwave multiplexer with multimode filter |
| 04/06/1991 | CA2025288A1 Waveguide-to-stripline directional coupler |
| 04/04/1991 | WO1991004588A1 Improved rf coupler |
| 04/03/1991 | EP0420553A2 Subharmonic mixer |
| 04/03/1991 | EP0420337A1 Balanced hyperfrequency with "balun" circuit |
| 04/03/1991 | EP0420241A2 Coaxial-to-microstrip orthogonal launcher |
| 04/03/1991 | EP0419756A2 Printed circuit transformer |
| 04/02/1991 | US5005019 Electromagnetically coupled printed-circuit antennas having patches or slots capacitively coupled to feedlines |
| 03/27/1991 | EP0418538A1 Improvements in or relating to balun transformers |
| 03/26/1991 | US5003622 Printed circuit transformer |
| 03/26/1991 | CA2008067A1 Printed circuit transformer |
| 03/20/1991 | EP0417590A2 Planar airstripline-stripline magic-tee |
| 03/19/1991 | US5001492 An antenna system |
| 03/19/1991 | US5001443 Coaxial-waveguide assemblages |
| 03/13/1991 | EP0416498A1 Generalised coupler in multilevel structure |
| 03/12/1991 | US4999593 Capacitively compensated microstrip directional coupler |
| 03/12/1991 | US4999592 Converter for planar antenna |
| 03/09/1991 | CA2024853A1 Generalized coupler multilevel structure |
| 03/05/1991 | US4998110 Power stabilizer and isolation/coupler network |
| 02/26/1991 | US4995815 Coaxial transmission line to strip line coupler |
| 02/21/1991 | DE3927114A1 Microwave range coupler with metal field structures - has conductive structure as combination of fin line and microstrip structure on substrate |
| 02/19/1991 | US4994818 Scanning tip for optical radiation |
| 02/19/1991 | US4994775 Microwave |
| 02/19/1991 | US4994771 Micro-connector to microstrip controlled impedance interconnection assembly |
| 02/12/1991 | US4992762 Ridge-trough waveguide |
| 02/07/1991 | WO1991001574A1 Microwave coupler and method of operating same utilizing forward coupling |
| 02/06/1991 | EP0411919A2 Matching circuit for high frequency transistor |
| 01/30/1991 | EP0410531A1 Semiconductor system comprising a directional coupler for the TE and TM component |
| 01/29/1991 | US4988961 Device for achieving minimal reflections in antenna coupling |
| 01/23/1991 | EP0409509A2 Waveguide coupling network |
| 01/23/1991 | EP0408904A2 Surface mounting semiconductor device and method |
| 01/16/1991 | EP0408282A2 Waveguide feed network for antenna array |
| 01/15/1991 | US4984990 Connection plug for a microwave unit |
| 01/09/1991 | EP0407258A1 Ultrahigh frequency energy distributor radiating directly |
| 01/09/1991 | EP0407146A2 Improved hybrid directional coupler for a radar system |
| 01/09/1991 | EP0406563A1 Broadband microstrip-fed antenna |
| 01/08/1991 | US4983933 Waveguide-to-stripline directional coupler |
| 01/07/1991 | CA2020573A1 Hybrid directional coupler for a radar system |
| 01/06/1991 | CA2016442A1 Broadband microstrip-fed antenna |