Circularly Polarized Slot Microstrip Antenna for Harmonic Suppression

Author

Yunxue Xu ; Shuxi Gong ; Tao Hong

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China

Volume

12

fYear

2013

fDate

2013

Firstpage

472

Lastpage

475

Abstract

With the introduction of the circularly symmetrical slot near the coaxial feed location of the corner truncated square microstrip antenna patch, both the circular polarization and harmonic suppression performance can be realized in this antenna. Effectiveness of the circularly symmetrical slot for harmonic suppression is studied, including its affection to circular polarization performance of the antenna. Experimental results show that application of the circularly symmetrical slot near the coaxial feed location of the microstrip antenna patch can remarkably suppress the harmonic frequencies. Measured radiation patterns indicate that the forward radiation is suppressed by more than 10~20 dB at the second and the third harmonic frequencies compared to the reference antenna, while maintaining the circular polarization performance, the cross polarization, and the backward radiation.

Keywords

antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; harmonics suppression; microstrip antennas; slot antennas; antenna radiation pattern; backward radiation; circular polarization; circularly polarized slot microstrip antenna patch; circularly symmetrical slot; coaxial feed location; corner truncated square microstrip antenna patch; cross polarization; harmonic frequency suppression; Antenna radiation patterns; circular polarization; harmonic suppression; microstrip antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2256334

Filename

6493385