Patents for H01Q 9 - Electrically-short aerials having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements (23,053) |
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10/18/1977 | US4054874 Microstrip-dipole antenna elements and arrays thereof |
10/11/1977 | US4053895 Electronically scanned microstrip antenna array |
09/27/1977 | US4051479 Elf vertical dipole antenna suspended from aircraft |
09/27/1977 | US4051478 Notched/diagonally fed electric microstrip antenna |
09/27/1977 | US4051477 Wide beam microstrip radiator |
09/06/1977 | US4047178 Low loss top termination for short monopoles |
08/02/1977 | US4040060 Notch fed magnetic microstrip dipole antenna with shorting pins |
07/26/1977 | US4038662 Dielectric sheet mounted dipole antenna with reactive loading |
07/05/1977 | USRE29296 Dual slot microstrip antenna device |
06/28/1977 | US4032921 Broad-band spiral-slot antenna |
06/21/1977 | US4031536 Stacked arrays for broadcasting elliptically polarized waves |
06/14/1977 | US4030101 Regular eight face polyhedral antenna element |
06/07/1977 | US4028704 Broadband ferrite transformer-fed whip antenna |
03/29/1977 | US4015265 Folded doublet antenna |
03/29/1977 | US4015264 Dual mode broadband antenna |
03/15/1977 | US4012744 Helix-loaded spiral antenna |
03/15/1977 | US4012741 Microstrip antenna structure |
02/15/1977 | US4008477 Antenna with inherent filtering action |
01/25/1977 | US4005430 Thick folded dipole which is tuneable within a frequency band of two octaves |
01/04/1977 | US4001833 Whole wave vertical antenna |
01/04/1977 | US4001832 Vertical antenna having an off-center supply |
12/14/1976 | US3997900 Four beam printed antenna for Doopler application |
11/23/1976 | US3993998 Directional loop antenna with plural dielectric coverings |
10/26/1976 | US3988737 Pivoted rod television receiving antenna for indoor use |
10/19/1976 | US3987456 Wide relative frequency band and reduced size-to-wavelength ratio antenna |
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 |
10/05/1976 | US3984834 Diagonally fed electric microstrip dipole antenna |
09/28/1976 | US3983483 Communications device arranged to be worn in intimate contact with the body of a user |
09/14/1976 | US3980952 Dipole antenna system having conductive containers as radiators and a tubular matching coil |
08/31/1976 | US3978488 Offset fed electric microstrip dipole antenna |
08/31/1976 | US3978487 Coupled fed electric microstrip dipole antenna |
08/24/1976 | US3977004 Aircraft VLF/LF/MF window antenna receiving system |
07/27/1976 | US3972050 End fed electric microstrip quadrupole antenna |
07/27/1976 | US3972049 Asymmetrically fed electric microstrip dipole antenna |
07/27/1976 | US3971125 Method of making an antenna array using printed circuit techniques |
07/20/1976 | US3971032 Dual frequency microstrip antenna structure |
07/13/1976 | US3969732 Spiral antenna circuit |
06/29/1976 | US3967276 Antenna structures having reactance at free end |
05/18/1976 | US3958248 Tunable dipole antenna for television receivers |
05/11/1976 | US3956752 Polarization insensitive lens formed of spiral radiators |
04/13/1976 | US3950757 Broadband whip antennas |
04/06/1976 | US3949407 Direct fed spiral antenna |
03/30/1976 | US3947850 Notch fed electric microstrip dipole antenna |
03/16/1976 | US3945016 Wide-band spiral antenna |
03/02/1976 | US3942180 Wide-band omnidirectional antenna |
02/10/1976 | US3938161 Microstrip antenna structure |
01/13/1976 | US3932875 Directional antenna |
01/13/1976 | US3932874 Broadband turnstile antenna |
01/13/1976 | US3932873 Shortened aperture dipole antenna |
01/06/1976 | US3931625 Shortened multi-rod broadband antenna |