Patents
Patents for H01Q 21 - Aerial arrays or systems (25,127)
08/1976
08/24/1976US3977006 Compensated traveling wave slotted waveguide feed for cophasal arrays
08/17/1976US3975737 Radome-antenna structure
08/03/1976US3973263 Sensitivity improvement of spaced-loop antenna by capacitive gap loading
07/1976
07/27/1976US3971125 Method of making an antenna array using printed circuit techniques
07/20/1976US3971032 Dual frequency microstrip antenna structure
07/20/1976US3971027 Radio interferometer sector-definition
07/13/1976US3969730 Cross slot omnidirectional antenna
06/1976
06/15/1976US3964069 Constant beamwidth antenna
06/15/1976US3964067 Glide path signal transmission system
06/15/1976US3964065 Steerable antenna null combiner system
05/1976
05/18/1976US3958247 Rf power coupling network employing a parallel plate transmission line
05/11/1976US3956752 Polarization insensitive lens formed of spiral radiators
04/1976
04/20/1976US3952310 Crossed dipole and slot antenna in pyramid form
04/13/1976US3950204 Aluminum waveguide antenna, adhesives, curing, microwaves
04/06/1976US3949405 Vertically polarised omnidirectional antenna
03/1976
03/30/1976US3947770 Broadband omnidirectional RF field intensity indicating device
03/09/1976US3943522 Circularly polarized antenna system using a combination of turnstile and vertical dipole radiators
03/09/1976US3943517 Adaptive polarization receiving system
02/1976
02/24/1976US3940770 Cylindrical array antenna with radial line power divider
02/17/1976US3939477 Quadrupole adcock direction finder and antenna therefor
02/10/1976US3938161 Microstrip antenna structure
02/10/1976US3938158 Antenna element for circular or linear polarization
02/10/1976US3938044 Antenna apparatus for an electronic security system
02/03/1976US3936836 Z slot antenna
01/1976
01/13/1976US3932874 Broadband turnstile antenna
01/13/1976US3932762 Apparatus for measuring radiation angle dependence
01/06/1976US3931625 Shortened multi-rod broadband antenna