Design and Development of Open Stub Truncated Rectangular Microstrip Antenna for Wideband Applications

Abstract

This paper presents the design and development of open stub truncated rectangular microstrip antenna for wideband operation. The effect of open stub is studied for wideband applications. The proposed antenna has been realized from conventional rectangular microstrip antenna (CRMSA) by using only microstripline feed with reduced substrate area from 8X8 cm² to 6X6 cm² with actual size reduction of 44.15% and by using 73.37% smaller ground plane. The 3.67% bandwidth of CRMSA has been enhanced to 49.42%. It is also observed that the operating band variation is depends on the length of the open stub and resonance frequency shifts towards lower side of the frequency spectrum. The proposed antenna is more compact and may find application in wireless CCTV, WLAN, WiMAX, Bluetooth, 802.16.a and S-band operation.