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