Premium
Characteristics of superstrate‐loaded circular polarization square‐ring microstrip antennas on thick substrate
Author(s) -
Sim ChowYenDesmond,
Row JeenSheen,
Chen MingYu
Publication year - 2005
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.21231
Subject(s) - microstrip antenna , microstrip , microwave , square (algebra) , materials science , patch antenna , circular polarization , antenna (radio) , polarization (electrochemistry) , optoelectronics , optics , electrical engineering , electronic engineering , engineering , telecommunications , physics , geometry , mathematics , chemistry
The characteristics of circular‐polarization (CP) square‐ring microstrip antennas loaded with superstrate are studied in this paper. Firstly, several CP antenna prototypes with various substrate thicknesses and inner‐slot sizes are designed, and they are excited by a coupling‐strip feed in order to overcome the high‐impedance problem of the square‐ring microstrip antenna. Then, superstrates with different thicknesses and permittivities are attached to the antenna prototypes in order to evaluate their effects on the CP performances. The experimental results show that the effects are more obvious for the square‐ring microstrip antenna with a larger inner‐slot size. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 567–570, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21231