Dual mode blade antenna

Details Dual mode blade antenna Dual mode blade antenna

1981-09-14

1984-03-20

Lieberman, Eli

Communications: radio wave antennas

Antennas

Slot type

343853, 343862, 343873, H01Q 1316, H01Q 128

Patent

active

044384378

ABSTRACT:
A printed circuit board includes first and second antenna elements spaced less than one-quarter wavelength apart and preferably one-eighth wavelength apart. Matching circuitry printed on the circuit board connects the elements to a quadrature coupler. The circuit board is foam encased in a blade-shaped fiberglass radome. The antenna radiates two independent null-free patterns.

REFERENCES:
patent: 2831189 (1958-04-01), Kemper
patent: 3210764 (1965-10-01), Anderson et al.
patent: 3396398 (1968-08-01), Dunlavy
patent: 3521284 (1970-07-01), Shelton et al.
patent: 4015263 (1977-03-01), Koerner et al.
patent: 4245222 (1981-01-01), Eng et al.

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