| Patents for H01Q 21 - Aerial arrays or systems (25,127) |
|---|
| 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 |
| 12/12/1978 | US4129871 Circularly polarized antenna using slotted cylinder and conductive rods |
| 10/24/1978 | US4122453 Antenna feed network |
| 10/24/1978 | US4122447 Endfire-type phased array antenna |
| 10/17/1978 | US4121220 Flat radar antenna employing circular array of slotted waveguides |
| 10/17/1978 | US4120085 Beam type planar array antenna method of fabrication |
| 10/10/1978 | US4119970 Dipole-slot type omnidirectional transmitting antenna |
| 10/03/1978 | CA1039842A1 Compact frequency reuse antenna |
| 09/26/1978 | US4117494 Antenna coupling network with element pattern shift |
| 09/26/1978 | US4117491 Logarithmically periodic loop antenna array with spaced filters in the coupling network |
| 09/26/1978 | US4117489 Corner fed electric microstrip dipole antenna |
| 09/26/1978 | US4117488 Multipurpose, multifunction antenna |
| 09/19/1978 | US4115782 Microwave antenna system |
| 09/19/1978 | US4115780 Direction finding antenna system |
| 09/12/1978 | US4114164 Broadband spiral antenna |
| 09/12/1978 | US4114163 L-band radar antenna array |
| 09/12/1978 | US4114162 Geodesic lens |
| 09/05/1978 | US4112431 Radiators for microwave aerials |
| 08/22/1978 | US4109255 Omnidirectional broadband circularly polarized antenna |
| 08/22/1978 | US4109254 Dipole radiators for feeding a parabolic reflector |
| 08/01/1978 | US4104641 Nonuniformly optimally spaced array with specified sidelobe positions in the radiation pattern |
| 07/18/1978 | US4101901 Interleaved antenna array for use in a multiple input antenna system |
| 07/11/1978 | US4100496 Ghost cancellation device |
| 07/04/1978 | US4099181 Flat radar antenna |
| 06/27/1978 | US4097868 Antenna for combined surveillance and foliage penetration radar |
| 06/20/1978 | US4096482 Wide band monopulse antennas with control circuitry |
| 06/06/1978 | US4093952 Guidance systems |
| 05/30/1978 | US4092647 Line source antenna for small angle electronic beam scanning |
| 05/23/1978 | US4091387 Beam forming network |
| 05/16/1978 | US4090203 Low sidelobe antenna system employing plural spaced feeds with amplitude control |
| 05/16/1978 | US4090202 Multiband antenna for automobile windshield |
| 05/09/1978 | US4088970 Phase shifter and polarization switch |
| 05/02/1978 | US4087824 Asymmetrically fed antenna arrays |
| 05/02/1978 | US4087823 Broadband dipole antenna system having three collinear radiators |
| 05/02/1978 | US4087822 Radio frequency antenna having microstrip feed network and flared radiating aperture |
| 04/04/1978 | US4083051 Circularly-polarized antenna system using tilted dipoles |
| 03/28/1978 | US4081803 Multioctave turnstile antenna for direction finding and polarization determination |
| 03/21/1978 | US4080579 Stripline four port hybrid junction |
| 03/14/1978 | US4079268 Thin conformal antenna array for microwave power conversion |
| 03/07/1978 | US4078217 Microwave isolation switch |
| 03/07/1978 | US4078214 Microwave crossover switch |
| 02/21/1978 | US4075635 Nonuniformly optimally spaced array with specified zeros in the radiation pattern |
| 02/07/1978 | US4072954 Multiband antenna for window panes |
| 01/31/1978 | US4071848 Thinned aperiodic antenna arrays with improved peak sidelobe level control |
| 01/31/1978 | US4071846 Wired microstrip linear array of dipoles |
| 01/24/1978 | US4070675 Power rejection apparatus using a null-constrained subarray for MTI radar applications |
| 12/13/1977 | US4063248 Multiple polarization antenna element |
| 12/13/1977 | US4063246 Coplanar stripline antenna |
| 12/13/1977 | US4063245 Microstrip antenna arrays |
| 12/06/1977 | US4062019 Low cost linear/circularly polarized antenna |
| 11/29/1977 | US4060792 Hard clipped beam former |
| 10/18/1977 | US4054886 Receiving antenna having mirror symmetry and defined polarizations ion |
| 10/18/1977 | US4054877 Circularly polarized dipole type omnidirectional transmitting antenna |
| 10/18/1977 | US4054874 Microstrip-dipole antenna elements and arrays thereof |
| 10/04/1977 | US4052723 Randomly agglomerated subarrays for phased array radars |
| 09/27/1977 | US4051476 Parabolic horn antenna with microstrip feed |
| 09/27/1977 | US4051474 Interference rejection antenna system |
| 09/06/1977 | US4047179 IFF antenna arrangement |
| 08/09/1977 | US4041501 Limited scan array antenna systems with sharp cutoff of element pattern |
| 08/02/1977 | US4038742 Method of making styrofoam slotted plane-array antenna |
| 07/12/1977 | US4035807 Integrated microwave phase shifter and radiator module |
| 06/28/1977 | US4032921 Broad-band spiral-slot antenna |
| 06/28/1977 | US4032917 Synthesis technique for constructing cylindrical and spherical shaped wave guide arrays to form pencil beams |
| 06/21/1977 | US4031539 Broadband turnstile antenna |
| 06/21/1977 | US4031537 Collinear dipole array with reflector |
| 06/21/1977 | US4031536 Stacked arrays for broadcasting elliptically polarized waves |
| 06/21/1977 | US4031488 Multiple polarization switch |
| 06/14/1977 | US4030101 Regular eight face polyhedral antenna element |
| 06/14/1977 | US4030100 Multipurpose submarine antenna |
| 05/03/1977 | US4021815 Circularly polarized transmitting antenna employing end-fire elements |
| 05/03/1977 | US4021813 Geometrically derived beam circular antenna array |
| 04/12/1977 | US4017860 Radio navigation beacon |
| 04/05/1977 | US4016553 Article detection system with near field electromagnetic wave control |
| 03/29/1977 | US4015264 Dual mode broadband antenna |
| 03/22/1977 | US4014027 Omnidirectional antenna for around a mast |
| 03/15/1977 | US4012744 Helix-loaded spiral antenna |
| 03/15/1977 | US4012741 Microstrip antenna structure |
| 03/01/1977 | US4010474 Two dimensional array antenna |
| 02/08/1977 | US4007461 Antenna system for deriving cardiod patterns |
| 02/08/1977 | US4007460 Phased array element retention |
| 01/25/1977 | US4005431 Slot antenna with waveguide coupling |
| 01/25/1977 | US4005379 R.F. power distribution network for phased antenna array |
| 12/21/1976 | US3999186 High power, high-frequency, high-voltage drive coupling for an antenna |
| 12/21/1976 | US3999185 Plural antennas on common support with feed line isolation |
| 12/14/1976 | US3997897 Radar system with displaced primary and secondary radiation lobes |
| 11/30/1976 | US3995277 Microstrip antenna |
| 11/02/1976 | US3990079 Log-periodic longitudinal slot antenna array excited by a waveguide with a conductive ridge |
| 11/02/1976 | US3990077 Electrically scanned antenna for direction error measurement |
| 11/02/1976 | US3989994 Space oriented microwave power transmission system |
| 10/26/1976 | US3988732 3-Channel selectable polarization, target discrimination antenna |
| 10/19/1976 | US3987458 Low-profile quadrature-plate UHF antenna |
| 10/19/1976 | US3987455 Microstrip antenna |
| 10/19/1976 | US3987454 Log-periodic longitudinal slot antenna array excited by a waveguide with a conductive ridge |
| 10/19/1976 | US3987451 Beam type planar array antenna system |
| 10/19/1976 | US3987450 Open rectangular antenna conductively supported on mast |
| 10/05/1976 | US3984839 Low height VLF antenna system |
| 10/05/1976 | US3984838 Electrically small, double loop low backlobe antenna |
| 09/28/1976 | US3983561 High frequency wave radiation system producing a rotating beam defining a predetermined geometrical pattern |