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A novel polarization reconfigurable ring‐slot antenna with frequency agility
Author(s) -
Zhao YuLong,
Jiao YongChang,
Zhao Gang,
Weng ZiBin,
Zhang FuShun
Publication year - 2009
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.24064
Subject(s) - reconfigurable antenna , microwave , microstrip antenna , slot antenna , microstrip , patch antenna , polarization (electrochemistry) , diode , electrical engineering , radiation , asymmetry , engineering , optoelectronics , antenna (radio) , optics , physics , coaxial antenna , telecommunications , chemistry , quantum mechanics
Abstract A novel reconfigurable ring‐slot antenna with switchable polarization and frequency agility is presented. Circular polarization (CP) radiation of the proposed antenna is achieved by introducing proper asymmetry in the ring‐slot structure and feeding the ring slot using a microstrip line at 45° from the introduced asymmetry. Two diodes are used to reconfigure the structure of the ring slot. Switching between right‐hand and left‐hand CP is achieved by turning the diodes on or off and the two CP modes are operated at different frequencies. Moreover, the antenna has a simple structure, which is easier to be fabricated. An antenna prototype is implemented and the measured results are shown. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 540–543, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24064