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Title: Characteristics of superstrate-loaded circular polarization square-ring microstrip antennas on thick substrate
Authors: Sim, Chow-Yen-Desmond;Row, Jeen-Sheen;Chen, Ming-Yu
Contributors: 電機工程學系
Keywords: Microstrip antenna;Circular polarization;Superstrate loading
Date: 2005-12
Issue Date: 2012-06-05T01:59:55Z
Publisher: Wiley
Abstract: 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.
Relation: Microwave and Optical Technology Letters, 47(6): 567-570
Appears in Collections:[Department and Graduate Institute of Electronic Engineering] Periodical Articles

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