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Circular fractal monopole antenna based on descartes circle theorem for UWB application
Author(s) -
Naeem Khan Salman,
Hu Jun,
Xiong Jiang,
He Sailing
Publication year - 2008
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.23437
Subject(s) - fractal antenna , monopole antenna , magnetic monopole , fractal , radiation pattern , physics , microwave , return loss , helical antenna , bandwidth (computing) , antenna (radio) , optics , geometry , electrical engineering , engineering , antenna efficiency , mathematics , telecommunications , mathematical analysis , quantum mechanics
An apollonian shaped ultra‐wideband circular monopole antenna based on descartes circle theorem is presented. Different self similar geometries from DCT are analyzed and optimized for UWB applications. The proposed design is slightly modified to ensure an overall smooth current distribution limited by the junction point nature of the fractal geometries. The experimental results are compared with conventional circular disk monopole and annular monopole antenna. The measured return loss of the proposed design below −10 dB is from 2.4 to over 40 GHz and its radiation pattern is omni‐directional compared with circular disk and annular antennas in most of its impedance bandwidth. Moreover due to the fractal shape, the proposed design has less weight and wind loading effect. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1605–1608, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23437