A new technique for feeding a cylindrical array

Author

Skahill, George ; White, Warrek D.

Author_Institution

AIL, Div. of Cutler-Hammer, Deer Park, NY, USA

Volume

23

Issue

2

fYear

1975

fDate

3/1/1975 12:00:00 AM

Firstpage

253

Lastpage

256

Abstract

A new technique for exciting a cylindrical array is described. It uses a Butler matrix and a simple switching matrix for exciting only that sector of the array that contributes to formation of a desired radiation pattern. It accomplishes full circumferential coverage with fewer active components, reduced complexity, and better performance than other matrix methods for exciting cylindrical arrays. An array of $N$ elements is configured so that $N/M (M = 1, 2, 3, ...)$ contiguous elements spanning an active angular sector of $2\\pi/M$ are excited simultaneously to form a radiation pattern. This paper considers the case $M = 4$ in which a quadrant array is excited by an $N/4$ -way power divider and an $N/4 \\times N/4$ Buffer matrix. Pattern selection or rotation is accomplished by $N/4$ phasers and $N/4$ 1P4T switches. Continuous full circle rotation of the radiation pattern requires $N$ switching operations in addition to linear control of the phasers.

Keywords

Antenna feeds; Cylindrical arrays; Phased arrays; Antenna theory; Antennas and propagation; Assembly; Broadband antennas; Butler matrix; Dipole antennas; Impedance; Integral equations; Reflector antennas; Shape;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1975.1141049

Filename

1141049