Antenna arrays formed of spiral sub-array lattices

Details Antenna arrays formed of spiral sub-array lattices Antenna arrays formed of spiral sub-array lattices

2005-01-11

2005-01-11

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Plural antennas

C343S844000, C343S7000MS

Reexamination Certificate

active

06842157

ABSTRACT:
A antenna array (20) includes a plurality of periodic or aperiodic arranged sub-arrays (22). Each sub-array (22) includes a plurality of antenna elements (32) arranged in the form of a spiral (30). The sub-arrays (22) can comprise various spiral shapes to provide the required physical configuration and operational parameters to the antenna array (20). The elements (32) of each sub-array (22) are arranged to minimize the number of such elements (32) that intersect imaginary planes perpendicular to the spiral and passing through the spiral center. Such an orientation of the elements (32) minimizes grating lobes in the antenna pattern.

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