Rectangular Zigzag Microstrip Patch Antenna with Swastik Shape DGS for WLAN, C and Ku-Band Applications

Abstract

A triple band microstrip-fed patch antenna is presented which contains the radiating structure having rectangular zigzag shape patch and an altered ground structure with a swastic shape design. This modified ground plane actually acts as a defected ground structure (DGS). Both the modified ground plane and radiating patch are perfect electric conductors. The patch is imprinted on a substrate named as Epoxy Glass FR-4 having thickness 1.6 mm, relative permittivity 4.4, and loss tangent 0.0024. The designed microstrip patch antenna (MPA) is able to generate three specific operating bands viz. 11.9–13.6 GHz, 5.71–5.82 GHz, 4.5-4.6 GHz with adequate bandwidth of 1.64 GHz, 110 MHz and 100 MHz and corresponding return loss of -32dB, -23dB, -14.3dB respectively covering Wireless Local Area Network (WLAN), C-band and Ku-band applications. A parametric study has been performed for the rectangular slots located in the patch. Proposed MPA is simulated using Computer Simulation Technology Microwave Studio Version 14.0 (CST MWS V14.0). Lastly, the fabrication of the proposed antenna with optimized parameters has been accomplished and measured results for S-parameter magnitude have been discussed