A Reconfigurable Circularly Polarized Microstrip Antenna With a Slotted Ground Plane

Author

Yoon, Won-Sang ; Baik, Jung-Woo ; Lee, Hun-Sung ; Pyo, Seongmin ; Han, Sang-Min ; Kim, Young-Sik

Author_Institution

Samsung Thales, Co., Ltd., South Korea

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

1161

Lastpage

1164

Abstract

This letter describes a square patch antenna with a switchable circular polarization (CP) sense. The proposed antenna has four L-shaped slots on the ground plane, and the CP radiation can be generated by current perturbation due to the slotted ground plane. Because the CP sense of the proposed antenna is altered by the current path that is redirected with switched p-i-n diodes on the slots, the CP direction of the proposed antenna can be simply switched between the right-handed and left-handed CPs. As the slot and bias circuits are not placed on the patch side, the proposed antenna has a simple structure and can radiate a CP wave without altering the main beam direction. The experimental results show that antennas have excellent switchable radiation performance at 2.4 GHz.

Keywords

UHF antennas; UHF diodes; microstrip antennas; p-i-n diodes; polarisation; CP radiation; CP sense; circular polarization; current perturbation; frequency 2.4 GHz; microstrip antenna; patch antenna; slotted ground plane; switched p-i-n diodes; Antenna measurements; Microstrip; Microstrip antennas; Patch antennas; Slot antennas; Switches; Circular polarization (CP); microstrip patch antenna; polarization diversity; reconfigurable antenna; slotted ground;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2096794

Filename

5657230