TY - JOUR
T1 - Dual Circularly Polarized Series-Fed Microstrip Patch Array with Coplanar Proximity Coupling
AU - Chen, Shengjian Jammy
AU - Fumeaux, Christophe
AU - Monnai, Yasuaki
AU - Withayachumnankul, Withawat
N1 - Funding Information:
Manuscript received August 7, 2016; revised November 20, 2016; accepted December 28, 2016. Date of publication January 2, 2017; date of current version June 5, 2017. The work of W. Withayachumnankul was supported by the International Research Fellowship from the Japan Society for the Promotion of Science.
Publisher Copyright:
© 2017 IEEE.
PY - 2017
Y1 - 2017
N2 - We demonstrate a concept of compact and highly efficient circular traveling wave series-fed microstrip patch array working at 10 GHz. The patch elements are excited by a microstrip line through coplanar proximity coupling. A dual-port feeding allows us to select the direction of the traveling waves and, consequently, the sense of circular polarization of the patches. Simultaneous feeding to both ports with proper amplitude and phase difference can result in radiated waves of arbitrary polarization. Owing to the circular array arrangement and the strong proximity coupling, the antenna exhibits a compact structure and achieves a high antenna efficiency of 90% with seven patches. Based on reciprocity, the antenna can readily be also utilized for polarimetry applications for which the signal amplitude at each port is proportional to the amplitude of each individual sense of polarization. Measured results of an antenna prototype successfully validate the concept.
AB - We demonstrate a concept of compact and highly efficient circular traveling wave series-fed microstrip patch array working at 10 GHz. The patch elements are excited by a microstrip line through coplanar proximity coupling. A dual-port feeding allows us to select the direction of the traveling waves and, consequently, the sense of circular polarization of the patches. Simultaneous feeding to both ports with proper amplitude and phase difference can result in radiated waves of arbitrary polarization. Owing to the circular array arrangement and the strong proximity coupling, the antenna exhibits a compact structure and achieves a high antenna efficiency of 90% with seven patches. Based on reciprocity, the antenna can readily be also utilized for polarimetry applications for which the signal amplitude at each port is proportional to the amplitude of each individual sense of polarization. Measured results of an antenna prototype successfully validate the concept.
KW - Antenna arrays
KW - circular polarization
KW - leaky-wave antennas
KW - series-fed antennas
KW - traveling wave antennas
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U2 - 10.1109/LAWP.2016.2647227
DO - 10.1109/LAWP.2016.2647227
M3 - Article
AN - SCOPUS:85029284431
SN - 1536-1225
VL - 16
SP - 1500
EP - 1504
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 7803605
ER -