Patents
Patents for H01Q 17 - Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems (2,636)
10/1979
10/02/1979US4170010 Inflatable radiation attenuator
09/1979
09/25/1979US4169268 Metallic grating spatial filter for directional beam forming antenna
08/1979
08/14/1979US4164718 Electromagnetic power absorber
07/1979
07/24/1979US4162496 Reactive sheets
06/1979
06/19/1979CA1056943A1 Constant beamwidth antenna
03/1979
03/06/1979US4143380 Compact spiral antenna array
01/1979
01/30/1979US4137361 Powder products
01/10/1979EP0000305A1 Antenna having low side-lobes and high polarisation purity
10/1978
10/03/1978US4118704 Electromagnetic wave-absorbing wall
09/1978
09/26/1978US4116906 Ferrite powder, iron powder
06/1978
06/20/1978US4096483 Reflector with frequency selective ring of absorptive material for aperture control
05/1978
05/30/1978US4092459 Powder products
05/02/1978US4087822 Radio frequency antenna having microstrip feed network and flared radiating aperture
04/1978
04/25/1978US4086591 Small aperture antenna
04/11/1978US4084161 Ceramics, polyimides
03/1978
03/28/1978US4081803 Multioctave turnstile antenna for direction finding and polarization determination
09/1977
09/27/1977US4051476 Parabolic horn antenna with microstrip feed
09/20/1977US4050073 Support for foam absorber of electromagnetic waves
09/06/1977US4047174 Method of reducing the radar cross-section of a dielectric body
08/1977
08/23/1977US4044358 Self erectable structure
07/1977
07/26/1977US4038660 Microwave absorbers
07/05/1977US4034375 Laminated camouflage material
06/1977
06/14/1977US4030098 Method and means for reducing reflections of electromagnetic waves
06/07/1977US4027384 Microwave absorbers
05/1977
05/17/1977US4024318 Radar shields
05/10/1977US4023174 Magnetic ceramic absorber
03/1977
03/15/1977US4012738 Combined layers in a microwave radiation absorber
02/1977
02/01/1977US4006479 Method for dispersing metallic particles in a dielectric binder
01/1977
01/18/1977US4003840 Ferrite powder and a polymer
01/04/1977US4001827 Camouflage material
12/1976
12/14/1976US3997899 Low radar cross-section re-entry vehicle
06/1976
06/15/1976US3964069 Constant beamwidth antenna
05/1976
05/18/1976US3958247 Rf power coupling network employing a parallel plate transmission line
04/1976
04/20/1976US3951904 Electromagnetic wave absorbing material containing carbon microspheres
02/1976
02/10/1976US3938152 Magnetic absorbers
02/03/1976US3936837 Corrugated horn fed offset paraboloidal reflector
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