Sectored annular ring microstrip antenna with DGS for circular polarization

Abstract

A novel and simple design of circularly polarized sectored annular ring microstrip antenna with coplanar and concentric circular microstrip antenna is presented. The proposed antenna has single microstrip line feed with defected ground structure. Simulation analysis has been carried out using Ansoft High Frequency Structure Simulator (HFSSTM) software and measurement is carried out using the AgilentTM Vector Network Analyser (N5230A:PNA‐L). Parametric analysis of return loss and axial ratio versus frequency for different physical parameter of antenna has been studied. Experimental results of the proposed antenna show the 34.61% impedance bandwidth and 8.08% axial ratio bandwidth at 2.6 GHz center frequency with 6.96 dB peak gain. Simulated results are in good agreement with measured results. Due to low profile and simple geometry, it can be applicable for S‐band application effectively as wireless LAN, Wi‐Fi, Bluetooth, Zig‐Bee, and radio frequency identification antennas. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:569–573, 2016

A low-profile circularly polarized microstrip antenna using elliptical electromagnetic band gap structure

“…The attractive features of circularly polarized (CP) antennas, which includes their ability to overcome multi-path interferences and reduce the effect of Faraday rotation, make them very desirable in wireless communication systems. Several ways have been explored by various researchers to design a low-profile, cheap, and highly compact CP antenna; these methods include using a substrate of a high-dielectric constant [1, 2], implementing slots [3, 4] and slits [5, 6] on the patch, employing the ground plane with defective ground structures [7, 8], implementing reactive impedance surfaces (RISs) [9], using split-ring resonators [10], complementary split-ring resonators [11], etc. Although the aforementioned methods led to the miniaturization of the antenna, they also degraded the antenna performance due to the presence of surface wave propagation in the substrate of the antenna.…”

A compact multi‐slots loaded gap coupled CP antenna with DGS for WLAN/WiMAX applications

“…A hook shaped microstrip antenna with multiple narrow slits in the ground plane 12 and concentric circular fed patch with parasitic sectored annular ring microstrip antenna having semi-ring slot in the ground were investigated to obtain the CP radiation. 13 Four symmetrical square slots was etched from the square ground plane to obtain the 0.83% ARBW. 14 Three triangular defects were embedded in hexagonal radiating patch as well as in square ground plane to realize the CP BW upto 1.8%.…”

“…Therefore, in present endeavors defected ground as well as slotted technique have been applied to further improve the antenna performances. A hook shaped microstrip antenna with multiple narrow slits in the ground plane 12 and concentric circular fed patch with parasitic sectored annular ring microstrip antenna having semi‐ring slot in the ground were investigated to obtain the CP radiation 13 . Four symmetrical square slots was etched from the square ground plane to obtain the 0.83% ARBW 14 .…”

A Multiband Arrow Shaped Patch Antenna Based on Apollonian Gasket and Soddy’s circle for application in LTE and UWB range

“…By using DGS the operating frequency was shifted to lower frequenct. Singh et.al [15] reported a Sectored annular ringmicrostrip antenna with DGS for circular polarization with 34.61% impedance bandwidth at 2.6GHz and 6.96 dB peak gain. Usage of Apollonian gasket geometry is also a new technique which is used by many authors for fractal geometry [16][17][18][19].Kumaret.al [20] presented a design of Appolliangasket like CPW-fed fractal antenna.…”