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A circular CPW‐FED slot antenna for broadband circularly polarized radiation
Author(s) -
Deng IChung,
Chen JinBo,
Ke QingXiang,
Chang JunRong,
Chang WoonFa,
King YuehTsu
Publication year - 2007
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.22881
Subject(s) - coplanar waveguide , broadband , slot antenna , turnstile antenna , optics , microwave , physics , ground plane , monopole antenna , radiation pattern , radiation , bandwidth (computing) , circular polarization , electrical engineering , antenna (radio) , engineering , telecommunications , microstrip
The design of a circular slot antenna for obtaining broadband circularly polarized (CP) radiation using a coplanar waveguide (CPW) feed is presented. The operation of the proposed antenna is achieved by protruding metallic mono‐strip from the circular ground plane towards the slot center at ϕ = 0° and feeding antenna using a 50‐Ω CPW with a protruded single strip at ϕ = 270°. In this design, the impedance bandwidth and 3 dB axial‐ratio bandwidth can reach as large as 50 and 36%, respectively. The peak of antenna gain is about 3.9 dBi, with gain variations <1 dBi for the frequencies within CP bandwidth. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2728–2733, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22881