J Korean inst Electromagn Sci Search

CLOSE


J Electromagn Eng Sci > Volume 10(3); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(3):183-185.
DOI: https://doi.org/10.5515/JKIEES.2010.10.3.183   
Dual-Polarized Annular Ring Patch Antenna for 2.4 GHz Doppler Radar
Seong-Ho Kim1, Jong-Gwan Yook2, Sung-Ho Cho1, Byung-Jun Jang3
1Department of Electronics and Communications Engineering, Hanyang University
2Department of Electrical and Electronic Engineering, Yonsei University
3Department of Electronics Engineering, Kookmin University
Abstract
A 2.4 GHz dual-polarized antenna for a Doppler radar is studied. The proposed dual-polarized antenna using a stacked annular ring patch with two co-centric gap-coupled feed lines and a $90^{circ}$ hybrid exhibits fairly good performance of 22 dB isolation at a center frequency of 2.4 GHz. Using a $90^{circ}$ hybrid, a right-handed circular polarization for the transmitter and a left-handed circular polarization for the receiver are implemented. The gain of the designed antenna is about 0 dBi over operating frequencies. The antenna size including a ground plane is only $40{times}40;mm^2$.
Key words: Doppler Radar, 2.4 GHz, Dual-Polarized, Hybrid, Isolation, Annular Ring, Microstrip Antenna

ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
AUTHOR INFORMATION
Editorial Office
#706 Totoo Valley, 217 Saechang-ro, Yongsan-gu, Seoul 04376, Korea
Tel: +82-2-337-9666    Fax: +82-2-6390-7550    E-mail: admin-jees@kiees.or.kr                

Copyright © 2019 by The Korean Institute of Electromagnetic Engineering and Science. All rights reserved.

Developed in M2community

Close layer
prev next