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A circular CPW‐fed slot antenna resonated by the circular loop for broadband circularly polarized radiation
Author(s) -
Deng IChung,
Ke QingXiang,
Lin RenJie,
King YuehTsu
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.23359
Subject(s) - coplanar waveguide , turnstile antenna , circular polarization , optics , microwave , broadband , axial ratio , physics , return loss , antenna (radio) , radiation , slot antenna , radiation pattern , electrical engineering , engineering , telecommunications , microstrip
The coplanar waveguide (CPW) fed circular slot antenna, resonated by the circular loop with a narrow opening, is designed for obtaining broadband circularly polarized (CP) radiation. The length of protruded signal strip (L S ) is utilized to adjust the phase difference between two orthogonal field components in the circularly polarized waves. In this design, the proposed antenna has the minimum return loss of −56.5 dB at the frequency of 2.403 GHz. The impedance and 3 dB axial‐ratio bandwidths can reach up to 740 MHz or 33.3% and 390 MHz or 16.6%, respectively. In addition, the simulated results are about as good as those of the measured ones. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1423–1426, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23359