Electronically scanned wideband antenna

Details Electronically scanned wideband antenna Electronically scanned wideband antenna

2005-12-14

2009-02-24

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Slot type

C343S876000

Reexamination Certificate

active

07495622

ABSTRACT:
An electronically scanned antenna working in a wide frequency band comprises at least: one reflector panel comprising an array of phase-shifters cells; one slotted waveguide illuminating the reflector panel by a microwave having a variable frequency f. The deviation Δθfof the direction of the wave emitted by the slotted waveguide, as a function of the frequency variations, countering the variation Δθpof the aiming direction of the wave reflected by the reflector panel. The disclosed antenna can be used especially in applications requiring compact or low-cost antennas.

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patent: 198-45-870 (1999-06-01), None
Masaharu Fujita: “An Active Reflector For Sar Calibration having a frequency shift capability” Ieice Transactions on Communications, Institute of Electronics Information and Comm. Eng. Tokyo, Jp. Aug. 1, 1992.

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