Premium
Designs of spiral slot antennas with dual‐frequency operation
Author(s) -
Row JeenSheen,
Chen LiTing
Publication year - 2014
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.28580
Subject(s) - slot antenna , microstrip antenna , circular polarization , physics , optics , patch antenna , microwave , polarization (electrochemistry) , microstrip , spiral (railway) , spiral antenna , dual polarization interferometry , acoustics , electrical engineering , engineering , antenna (radio) , telecommunications , coaxial antenna , mechanical engineering , chemistry
ABSTRACT Dual‐frequency slot antennas with different polarization combinations are studied in this article. The antenna is a single‐arm spiral slot fed by a microstrip line. A comparison between the circular polarization (CP) design methods of a shorted ring slot antenna and a spiral slot antenna is first made. By the comparison results, a design for dual‐frequency CP spiral slot antennas is then drawn. Moreover, it is found that, by rotating the spiral slot, the polarization senses at the two operating frequencies can be varied among three different combinations, including (left‐handed CP, right‐handed CP), (right‐handed CP, left‐handed CP), and (linear polarization, linear polarization). Simulation and experimental results for the performances of the antenna operating at each polarization combination are shown in detail. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2294–2297, 2014