Electronically steered phased array blade antenna assembly

Details Electronically steered phased array blade antenna assembly Electronically steered phased array blade antenna assembly

2008-01-24

2010-06-15

Phan, Tho G (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

Reexamination Certificate

active

07737906

ABSTRACT:
An antenna design, having two symmetrical phased array blade antenna elements which provide improved lateral target coverage with an increased effective radiated power and exhibits smooth null-free unidirectional antenna patterns. The direction of the unidirectional antenna pattern is dictated by a switching command under control of a user. Each blade antenna element is coupled to a 90-degree hybrid coupler and an RF switching device by a semi-rigid RF cable. Each blade antenna element is also connected to a sub-resonant choke balun for improved impedance matching and resultant distortion-less antenna patterns.

REFERENCES:
patent: 2664507 (1953-12-01), Mural
patent: 3702479 (1972-11-01), Uhrig
patent: 4150382 (1979-04-01), King
patent: 4434425 (1984-02-01), Barbano
patent: 4814777 (1989-03-01), Monser
patent: 7280083 (2007-10-01), Adamski

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