A Novel Compact Rectangular Microstrip Patch Antenna with a Superstrate Element for 2.4GHz WLAN Applications

Abstract

This paper presents a new compact rectangular microstrip patch antenna with a superstrate element. This antenna operates at 2.4 GHz TM01 fundamental mode, which is suitable for WLAN applications. The patch area is reduced by 50% by placing three rectangular slots on the ground plane. In order to compensate for the decreased gain due to the size reduction, a high permittivity superstrate is used with 4mm thickness and 5mm height from the antenna surface. The proposed antenna offers the advantage of occupying half the area of the non-modified rectangular patch while it possesses the same broadside gain of 6-7dB. The trade-off is the additional antenna height due to the placement of the superstrate element.

Implementation of a Circular Shape Patch Antenna at 2.4 GHz for Different Wireless Communications

“…Generally, the highest value of these regions is taken as the best value for the directivity of the antenna used, whose value is equal to2.97 dBi. This result is good compared to the results of Sener [13]. This result, in addition to the gain value, was practically not obtained due to the unavailability of a chamber room to take measurements for these results.…”

Reconfigurable Designs of Sectoral Microstrip Antennas for Wideband and Circularly Polarized Response

“…Due to this modified ground plane, these designs have lower antenna gain. The S 11 BW as offered by the slots cut ground plane design that is backing rectangular patch [42] is lower than that obtained in the proposed wideband design.…”

“…In most of the designs, MSAs are operated in their fundamental resonant mode and thus offer broadside radiation characteristics. The bandwidth (BW) enhancement in MSA is achieved when additional resonant modes are introduced, and it is obtained by using either multi-resonator configuration employing parasitic patches or modified shapes of the radiating patch, or the resonant slots cut in the patch, or the ground plane embedded with slots employing modified shapes [3][4][5][6][7][8][9][10][11][12][13][14][15]42]. In free space communication, because of multi-path propagation effects, signal undergoes changes in its polarization.…”