Bandwidth Enhancement of UWB Microstrip Antenna with a Modified Ground Plane
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 2
Abstract
Bandwidth enhancing technique using a modified ground plane with diagonal edges, rectangular slot, and T-shape cut for the design of compact antennas.Ultra-wideband (UWB) technology has been regarded as one of the wireless technologies that provide high data rate transmission bandwidth of 7.5 GHz (3.1–10.6GHz).The planar circular disc monopole is fabricated on a 3 cm×5.1 cm×0.16 cm FR-4 board(εr=4.4, thickness=1.6mm) with a feed line and a finite ground plane.The patch acts approximately as a resonant cavity (short circuit walls on top and bottom, open-circuit walls on the sides).In a cavity, only certain modes are allowed to exist, at different resonant frequencies. If the antenna is excited at a resonant frequency, a strong field is set up inside the cavity, and a strong current on the (bottom) surface of the patch. This produces significant radiation (a good antenna).
Authors and Affiliations
J. Bharanitharan, R. Sandhya
Keywords
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