A Novel CPW Fed Multiband Circular Microstrip Patch Antenna for Wireless Applications

Abstract

In this paper, a novel design of coplanar microstrip patch antenna is presented for ultra wideband (UWB) and smart grid applications. It is designed on a dielectric substrate and fed by a coplanar waveguide (CPW). Microstrip patch antenna consists of a circular patch with an elliptical shaped eye opening in the center to provide multiband operations. The antenna has wide bandwidth of 5 GHz between 10.8-15.8 GHz and 3 GHz between 5.8-8.8GHz, high return loss of -34 dB at 3.9 GHz and -29dB at 6.8 GHz with satisfactory radiation properties. The parameters that affect the performance of the antenna in terms of its frequency domain characteristics are investigated. The antenna design has been simulated on Ansoft's High Frequency Structure Simulator (HFSS). It is a compact design of 47×47mm 2 area on Rogers RO3003 (tm) substrate with dielectric constant of 3 and thickness of 1.6 mm. The simulated antenna has three operating frequency bands at 2.82, 5.82-8.8, 10.8-15.8GHz and shows the band-notch characteristic in the UWB band to avoid interferences, which is caused by GHz. The designed antenna structure with 5.68 dBi gain is planar, simple and compact; hence it can be easily embedded in wireless communication systems and integrated with microwave circuitry for low manufacturing cost.

Ultra-wideband Antenna for WLAN, WiMAX and LTE Applications

“…The proposed antenna fulfills the requirement of WLAN (5.2/5.8 GHz), WiMAX (2.5/3.5/5.5 GHz) and LTE (2.5-2.69 GHz). The antenna can also be used in smart grid technology (11)(12)(13)(14)(15)(16)(17)(18) and in European fixed satellite systems which have appreciable gain in 12-14 GHz band of frequencies.…”

“…In recent years coplanar waveguide fed antennas are being extensively investigated [13][14]. The coplanar waveguide, compared with the microstrip line, has advantages such as low radiation loss, less dispersion; uniplanar configuration and easy mounting of shunt lumped elements or active devices [15]. The design of antenna is simulated in CST Microwave Studio for obtaining the optimum dimensions of the antenna.…”