Electrically steerable phased array antenna system

Details Electrically steerable phased array antenna system Electrically steerable phased array antenna system

2006-05-05

2009-10-27

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C342S373000

Reexamination Certificate

active

07609205

ABSTRACT:
An electrically steerable phased array antenna system includes an array of antenna elements and a corporate feed network having an inner region for input of two input signals A and B. The corporate feed network has two outer regions and generating vector combinations of respective input signals and other input signal fractions. Each outer region has a splitting and combining network providing the vector combinations as signals to antenna elements connected predominantly peripherally to itself. Each splitting and combining network has input signal connections from the inner region disposed peripherally of the corporate feed network. Each consists of splitters and adding/subtracting elements implemented as hybrid couplers some of which have re-entrant or meandered track sections. Hybrid meandered track sections have multiple widths for signal weighting. The corporate feed network is configured to avoid track cross-overs.

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Skobelev,“Methods of Constructing Optimum Phased-Array Antennas for Limited Field of View”, IEEE Antennas and Propagation Magazine, vol. 40, No. 2, pp. 39-50 (Apr. 1998).

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