Horned interferometer antenna apparatus

Details Horned interferometer antenna apparatus Horned interferometer antenna apparatus

1995-11-07

1998-02-03

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Wave guide type

343853, 342156, H01Q 2100

Patent

active

057149640

ABSTRACT:
A horned interferometer antenna apparatus has parallel plates spaced apart and rigidly connected together by a separator. In the space between the parallel plates is a plurality of antenna elements. The parallel plates each have a free edge which diverge from the other free edge defining an aperture for receiving electromagnetic waves. The horned interferometer antenna apparatus has enhanced directivity and is used for passive radio direction finding. An interferometer system comprises a horned interferometer antenna apparatus, a multi channel receiver and a phase comparator. The interferometer system measures the angle of arrival of an incident electromagnetic wave or signal based on the phase difference between the signal as received by the antenna elements of the horned interferometer antenna apparatus.

REFERENCES:
patent: 2283935 (1942-05-01), King
patent: 2438987 (1948-04-01), Bailey
patent: 2615132 (1952-10-01), Rumsey
patent: 3068478 (1962-12-01), Hagaman
patent: 3775773 (1973-11-01), Nemit
patent: 4349827 (1982-09-01), Bixler et al.
Paul Eyring, "Monopulse DF Antenna for Submarine ESM Applications," Association of Old Crows Symposium Digest, Sep., 1995.
Paul Eyring and Randolph Clapp, "Design and Development of Wide-Band Circular Array Interferometers," Proceeding of the 1994 Antennas Application Symposium, p. 8/1-35 no month.

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