| Patents for H01Q 13 - Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave (15,760) |
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| 01/20/1981 | US4246584 Hybrid mode waveguide or feedhorn antenna |
| 01/13/1981 | US4245222 Dual function antenna |
| 01/07/1981 | EP0021193A1 Combined antenna system |
| 01/06/1981 | US4243990 Integrated multiband array antenna |
| 12/30/1980 | US4242685 Slotted cavity antenna |
| 12/23/1980 | US4240445 Electromagnetic energy coupler/receiver apparatus and method |
| 12/09/1980 | US4238798 Stripline antennae |
| 11/12/1980 | EP0018476A1 Crossed slot cavity antenna |
| 11/11/1980 | US4233608 Broadband antenna element |
| 11/11/1980 | US4233607 Apparatus and method for improving r.f. isolation between adjacent antennas |
| 10/28/1980 | US4231042 Hybrid mode waveguide and feedhorn antennas |
| 10/28/1980 | US4231041 Electrically conducting lead termination apparatus for a thin film antenna |
| 10/21/1980 | US4229744 Directional annular slot antenna |
| 10/21/1980 | CA1088202A1 Radio communication system for confined environments |
| 10/15/1980 | EP0017530A1 Radiating source constituted by a dipole excited by a waveguide, and its use in an electronic scanning antenna |
| 10/14/1980 | US4228410 Microwave circular polarizer |
| 09/30/1980 | US4225869 Multislot bicone antenna |
| 09/17/1980 | EP0015837A2 Parallel-plane antenna with rotating polarisation |
| 09/16/1980 | CA1085956A1 Iff antenna arrangement |
| 09/09/1980 | US4222056 Slot antenna lead connecting apparatus |
| 09/02/1980 | US4220956 Collinear series-fed radio frequency antenna array |
| 08/26/1980 | US4219820 Coupling compensation device for circularly polarized horn antenna array |
| 08/26/1980 | CA1084620A1 Dual mode feed horn |
| 08/20/1980 | EP0014692A2 Mode coupler in an automatic angle tracking system |
| 08/20/1980 | EP0014635A1 Dipole fed open cavity antenna |
| 08/19/1980 | US4218685 Coaxial phased array antenna |
| 08/19/1980 | US4218656 Arrangement for the remote transmission of information for the remote guidance of vehicles which are subject to severe acceleration |
| 07/09/1980 | EP0013240A1 Common antenna for primary and secondary radar |
| 07/01/1980 | US4210915 Microwave antenna with exponentially expanding horn structure |
| 06/25/1980 | EP0012645A1 Sheet antenna composed of two circular rings |
| 06/24/1980 | US4209791 Antenna apparatus for bearing angle determination |
| 06/24/1980 | CA1080351A1 Radio frequency antenna arrays of radiating slot apertures |
| 06/17/1980 | US4208660 Radio frequency ring-shaped slot antenna |
| 06/17/1980 | CA1079504A1 Method of producing coaxial cable |
| 06/11/1980 | EP0012055A1 Microstrip monopulse primary feed and antenna using same |
| 06/03/1980 | CA1078945A1 Doppler radar module |
| 05/20/1980 | US4204212 Conformal spiral antenna |
| 05/13/1980 | US4203116 Microstrip antenna radiators with series impedance matching means |
| 05/13/1980 | US4203114 Digital bearing indicator |
| 05/06/1980 | US4201956 Arrangement for the generation and radiation of microwaves |
| 04/29/1980 | US4200873 Folded tapered coaxial cavity-backed annular slot antenna |
| 04/22/1980 | US4199764 Dual band combiner for horn antenna |
| 04/08/1980 | US4197546 Millimeter wave source incorporating a solid-state active component and a directional antenna |
| 04/08/1980 | US4197545 Stripline slot antenna |
| 02/19/1980 | US4189730 Directional antenna shield for a slotted opening |
| 02/19/1980 | US4189691 Microwave terminating structure |
| 01/23/1980 | EP0007222A1 Stripline antennas |
| 01/22/1980 | US4185289 Spherical antennas having isotropic radiation patterns |
| 12/25/1979 | US4180818 Doppler navigation microstrip slanted antenna |
| 12/25/1979 | US4180817 Serially connected microstrip antenna array |
| 12/11/1979 | CA1067996A1 Multiple resonance radio frequency antenna structure |
| 12/04/1979 | US4177468 Inflatable cavity-backed annular slot transmitting antenna |
| 11/28/1979 | EP0005642A1 Improvements in or relating to stripline antennae |
| 11/28/1979 | EP0005487A1 Parabolic reflector antenna with optimal radiative characteristics |
| 10/30/1979 | US4173019 Microstrip antenna array |
| 09/18/1979 | US4168504 Multimode dual frequency antenna feed horn |
| 07/24/1979 | US4162500 Ridged waveguide antenna submerged in dielectric liquid |
| 07/03/1979 | US4160144 Single-sided microwave applicator for sealing cartons |
| 06/19/1979 | CA1056942A1 Stripline antenna arrays |
| 06/05/1979 | US4157550 Microwave detecting device with microstrip feed line |
| 06/05/1979 | US4157518 Leaky coaxial cable having shield layer with uniform gap |
| 05/22/1979 | US4156242 Light-weight low-cost antenna element |
| 05/16/1979 | EP0001883A1 Apparatus for improving R.F. isolation between adjacent microstrip antenna arrays |
| 05/01/1979 | US4152648 Radiocommunication system for confined spaces |
| 04/17/1979 | US4150382 Non-uniform variable guided wave antennas with electronically controllable scanning |
| 03/06/1979 | US4143377 Omnidirectional antenna with a directivity diagram adjustable in elevation |
| 02/20/1979 | US4141015 Conical horn antenna having a mode generator |
| 02/20/1979 | US4141014 Multiband high frequency communication antenna with adjustable slot aperture |
| 02/20/1979 | US4141013 Integrated circularly polarized horn antenna |
| 02/06/1979 | US4138683 Short radiating horn with an S-shaped radiating element |
| 01/02/1979 | US4132995 Cavity backed slot antenna |
| 12/26/1978 | US4131894 High efficiency microstrip antenna structure |
| 12/26/1978 | US4131893 Microstrip radiator with folded resonant cavity |
| 12/26/1978 | US4131892 Stacked antenna structure for radiation of orthogonally polarized signals |
| 12/19/1978 | US4130823 Miniature, flush mounted, microwave dual band cavity backed slot antenna |
| 12/19/1978 | US4130822 Slot antenna |
| 12/12/1978 | US4129871 Circularly polarized antenna using slotted cylinder and conductive rods |
| 12/12/1978 | US4129841 Radiating cable having spaced radiating sleeves |
| 11/07/1978 | US4124851 UHF antenna with air dielectric feed means |
| 10/31/1978 | US4123758 Disc antenna |
| 10/24/1978 | US4122446 Dual mode feed horn |
| 10/10/1978 | US4119970 Dipole-slot type omnidirectional transmitting antenna |
| 10/10/1978 | US4119967 Microwave dual mode non-interfering CW and pulsed signal system method and apparatus |
| 09/26/1978 | CA1039388A1 Doppler radar device using an in horn shielded detector device |
| 09/19/1978 | US4115782 Microwave antenna system |
| 09/19/1978 | US4115781 Radiation enhancement device |
| 09/05/1978 | US4112432 Square horn antenna having improved ellipticity |
| 08/29/1978 | US4110751 Very thin (wrap-around) conformal antenna |
| 08/22/1978 | US4109254 Dipole radiators for feeding a parabolic reflector |
| 08/08/1978 | US4106026 Corrugated horn with a low standing wave ratio |
| 07/18/1978 | US4101900 Modified t-bar fed slot antenna |
| 07/18/1978 | US4101896 Camouflaged dual-slot antenna |
| 06/27/1978 | US4097869 Orthogonal-port, biconical-horn, direction-finder antenna |
| 05/30/1978 | US4092648 Reflex feed system for dual frequency antenna with frequency cutoff means |
| 05/09/1978 | US4089005 Dual frequency antenna |
| 05/09/1978 | US4089004 Collapsible corrugated horn antenna |
| 05/09/1978 | US4088971 Flat high frequency cable useable with vehicle transmitter-receiver |
| 05/02/1978 | US4087822 Radio frequency antenna having microstrip feed network and flared radiating aperture |
| 04/25/1978 | US4086598 Broadband omnidirectional slot antenna with an electrical strap connector |
| 04/11/1978 | US4084141 Zig-zag slotted coaxial cable for radio frequency signal coupling |