A Two-Element Time-Modulated Array With Direction-Finding Properties

Author

Tennant, A. ; Chambers, B.

Author_Institution

Dept. of Electron. & Electr. Eng., Sheffield Univ.

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

64

Lastpage

65

Abstract

A two-element time-modulated array system which can be configured to provide active electronic null scanning is presented. The received signal from each element of the array is time switched and combined to provide a phase-modulated output in which the depth of modulation is dependent on the angle of arrival of the received signal. The angular response of the array at the first harmonic of the switching frequency exhibits a deep null which can be scanned in angle to plusmn90deg by controlling the mark-space ratio of the element switching waveform

Keywords

array signal processing; direction of arrival estimation; phase modulation; radio direction-finding; active electronic null scanning; direction-finding properties; phase-modulated output; received signal angle of arrival; two-element time-modulated array; Antenna arrays; Directive antennas; Lighting; Linear antenna arrays; Navigation; Phase modulation; Phased arrays; Receiving antennas; Switches; Switching frequency; Antenna; array; direction finding;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.891953

Filename

4126496