Premium
A novel electronically scannable log‐periodic leaky‐wave antenna
Author(s) -
Augustin Gijo,
Shynu S. V.,
Aanandan C. K.,
Mohanan P.,
Vasudevan K.
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20757
Subject(s) - leaky wave antenna , bandwidth (computing) , wideband , microwave , microstrip , microstrip antenna , optics , electrical engineering , engineering , beam steering , physics , antenna (radio) , acoustics , telecommunications
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