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A printed antenna with constant gain over a wide bandwidth for ultra‐wideband applications
Author(s) -
Ranga Y.,
Esselle Karu P.,
Weily A.R.,
Verma A. K.
Publication year - 2010
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.25157
Subject(s) - antenna gain , microwave , radiation pattern , bandwidth (computing) , wideband , monopole antenna , optics , azimuth , high gain antenna , ground plane , physics , dipole antenna , antenna (radio) , electrical engineering , engineering , antenna factor , telecommunications
A constant‐gain printed circular monopole antenna (PCMA) is presented that operates from 4 to 12 GHz. The gain of the PCMA is enhanced with the use of surface‐wave excited, proximity‐coupled (SW‐PC), conductor‐backed, twin‐slot radiators. A significant improvement in 2 and 3 dB peak gain bandwidth in the XY plane (θ = 90°) is achieved, and the peak measured gain of the antenna is nearly constant (5.5 dBi ± 1.5 dB) from 3 to 10 GHz. It has a very broad radiation pattern in the azimuth plane and a typical figure of eight pattern in the elevation plane. The antenna is also compact, robust, and easy to fabricate. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1261–1264, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25157