Communications: radio wave antennas – Antennas – Plural separate diverse type
Patent
1988-08-22
1989-09-26
Hille, Rolf
Communications: radio wave antennas
Antennas
Plural separate diverse type
343772, 343786, H01Q 500, H01Q 1300
Patent
active
048704261
ABSTRACT:
A radar antenna element comprises a lower band waveguide and an array of parallel, dual-polarized, higher band waveguides and dipoles mounted within or directly adjacent an aperture of the lower band waveguide. The lower band waveguide and each higher band waveguide have one cross-sectional dimension less than 0.5 wavelength. A choke section, tuned dielectric or absorber isolates signals of the higher band waveguides from signals of the lower band waveguide. An array of such radar antenna elements locates a radar target with lower band signals and tracks that target with higher band signals, for instance.
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Seavey, J., "Proper Feed Selection: First Step to Optimum System Performance", TRVO Technology.
Lamberty Bernard J.
Oh Luis L.
Hille Rolf
Johnson Doris J.
The Boeing Company
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