Phased array planar antenna and a method thereof

Details Phased array planar antenna and a method thereof Phased array planar antenna and a method thereof

2006-09-19

2006-09-19

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

C343S756000, C343S758000, C343S765000

Reexamination Certificate

active

07109937

ABSTRACT:
A phased array antenna system accommodating onto a platform for tracking a target moving relatively to the platform, the antenna system comprising a first planar active subsystem operable for receiving/transmitting an RF signal of a certain linear polarization direction and for selectively performing electronic scanning; a second, roll subsystem coupled to the active subsystem and operable for rotational movement of the active subsystem about a first axis perpendicular to a plane defined by the planar active subsystem; a third, elevation subsystem coupled to the second, roll subsystem and to a fourth azimuth subsystem, the azimuth subsystem defining a central axis of the antenna system and being operable for providing rotational movement of the first planar subsystem about the central axis, the elevation subsystem being configured to provide a certain angular orientation between the plane defined by the active subsystem and a plane defined by the azimuth subsystem, thereby allowing positioning the first planar active subsystem with respect to the target such that the linear polarization direction is substantially aligned with a linear polarization direction of RF radiation received and/or transmitted by the target.

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