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Improved Design of Triangular Patch Linear Array Microstrip Antenna Using Isosceles-Triangular Defected Ground Structure

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3 Author(s)
Fitri Yuli Zulkifli ; Antenna propagation and Microwave Research Group (AMRG), Center for Information and Communication Engineering Research (CICER), Department of Electrical Engineering, University of Indonesia, Kampus Baru UI Depok, West Java, 16424, Indonesia. Email: yuli@ee.ui.ac.id ; Susy Tri Lomorti ; Eko Tjipto Rahardjo

A novel isosceles-triangular defected ground structure (DGS) is implemented on Triangular Patch Linear Array microstrip antennas to suppress surface waves and improve the design. The radiation performance of the antenna is characterized by the dimension of the DGS and by locating the DGS at specific position which is found experimentally. Measured results shows that the antenna with DGS can improve impedance matching with better return loss of -45.48 dB from -30.33 dB, bandwidth enhancement (2.87 MHz), gain enhancement upto 0.5 dB and suppress cross polarization.

Published in:

2007 Asia-Pacific Microwave Conference

Date of Conference:

11-14 Dec. 2007