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A novel electronically scannable log-periodic leaky-wave antenna

✍ Scribed by Gijo Augustin; S. V. Shynu; C. K. Aanandan; P. Mohanan; K. Vasudevan

Book ID
102518202
Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
99 KB
Volume
45
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

An innovative phaseshifterless, wideband, microstrip leaky‐wave antenna with an electronically steerable dual‐pencil‐beam pattern in the H‐plane is presented. The log‐periodic geometry of the leaky slots of the antenna results in a wide bandwidth of 25.19%. The fan beam can be steered up to 14° over the wide resonating band of the antenna. The beam is also steerable at a fixed frequency, by reactivelty loading the slots and a maximum steering angle of about 14° is observed for different capacitor values with an improved bandwidth of 33.3%. This concept is studied using passive components, but it can be extended to varactors. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 163–165, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20757

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