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Defected ground structure for beam steering array antenna applications

Ahmad, K. S. and Hamzah, S. A. and Che Seman, Fauziahanim (2015) Defected ground structure for beam steering array antenna applications. ARPN Journal of Engineering and Applied Sciences, 10 (19). pp. 8653-8658. ISSN 1819-6608

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Abstract

Incorporation of Defected Ground Structure (DGS) into the Microstrip Phased Array Antenna (PAA) provides desirable changes to the direction of the main beam. In this paper, investigation on the development of 2 x 1 rectangular patches which operates at 9 GHz is presented. The two rectangular patches are separated at 0.258 and the microstrip line is feeding to the center of the patches to provide impedance matching. Then, an orthogonal-I-shaped DGS is inserted in between the two patches at the ground plane. It is found that by changing the dimension of the DGS, the main lobe of the PAA increases from 39 to 137, however, the directivity of the arrays maintains about 6 dBi. This demonstrates the potential of employing DGS to steer the main beam of PAA instead of using additional phase shifter which is bulky and more complicated to connect to the antenna’s feeding line.

Item Type: Article
Uncontrolled Keywords: phase array antenna; beam steering; defected ground structure (DGS) modification
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Divisions: Faculty of Electrical and Electronic Engineering > Department of Communication Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 10 Jan 2017 04:38
Last Modified: 10 Jan 2017 04:38
URI: http://eprints.uthm.edu.my/id/eprint/8114
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