DocumentCode :
770239
Title :
A 5-by-5 element coupled oscillator-based phased array
Author :
Pogorzelski, Ronald J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Volume :
53
Issue :
4
fYear :
2005
fDate :
4/1/2005 12:00:00 AM
Firstpage :
1337
Lastpage :
1345
Abstract :
Design, fabrication, and test of a 25-element planar coupled oscillator based phased array is described. The array operates at S-band and is shown to produce an agile beam which is steerable via adjustment of the perimeter oscillator tuning biases only. A phase diagnostic system is described which displays the aperture phase distribution during the far field measurements of the radiated beam. Measured results are presented both with and without the diagnostic system present. Without the diagnostic system, the beam pointing was achieved by setting the perimeter oscillator biases to be values previously used in the measurements with the diagnostic system present. The far field was then measured without the benefit of a knowledge of the aperture phase distribution. Finally, the results of far field measurements are described in which the beam position was incremented from a position previously measured with the diagnostic system in place to a new position by incrementing the perimeter oscillator biases by a fixed amount.
Keywords :
UHF antennas; antenna phased arrays; antenna radiation patterns; antenna testing; aperture-coupled antennas; microwave antenna arrays; voltage-controlled oscillators; 25-element planar coupled oscillator; 5-by-5 element coupled oscillator-based phased array; S-band; aperture phase distribution; far field measurement; mutual injection locking; phase diagnostic system; voltage controlled oscillator; Apertures; Beam steering; Displays; Injection-locked oscillators; Microstrip antenna arrays; Microstrip antennas; Phase measurement; Phased arrays; Testing; Voltage-controlled oscillators; Mutual injection locking; phased array; voltage controlled oscillator;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2005.844395
Filename :
1417212
Link To Document :
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