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Broadband circularly polarized aperture‐coupled microstrip antenna mounted in a 2.45 GHz wireless communication system
Author(s) -
Chen HuaMing,
Lin YiFang,
Chiou TzungWern
Publication year - 2000
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 - 10.1002/1098-2760(20010120)28:2<100::aid-mop6>3.0.co;2-v
Subject(s) - standing wave ratio , broadband , optics , microstrip antenna , microstrip , circular polarization , turnstile antenna , bandwidth (computing) , microwave , physics , electrical engineering , axial ratio , engineering , antenna (radio) , telecommunications , coaxial antenna
A novel dual‐feeding technique for a broadband circularly polarized aperture‐coupled microstrip antenna operating in a 2.45 GHz system is presented. The dual feeds are placed in orthogonal directions, and are connected to a Wilkinson power divider with a 90° phase shift between its two output feedlines. Proper positioning of the coupling slots results in high port solution (>40 dB), and a purity of circular polarization is obtained. A broad impedance bandwidth (VSWR≤2) of about 54.7% and a 1 dB axial‐ratio bandwidth of about 9.8% were achieved. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 100–101, 2001.