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

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 o...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2007, Vol.6, p.64-65
Main Authors: Tennant, A., Chambers, B.
Format: Article
Language:English
Subjects:
Angle of arrival
Antenna
Antenna arrays
Antennas
array
Arrays
direction finding
Directive antennas
Electronics
Lighting
Linear antenna arrays
Modulation
Navigation
Phase modulation
Phased arrays
Receiving antennas
Scanning
Switches
Switching
Switching frequency
Waveforms
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Summary: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
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2007.891953