A Miniaturized Circularly Polarized Multiband Antenna for Wi-Max, C-band & X-band Applications

Sonali Kumari (1,*), Yogendra K. Awasthi (1), and Dipali Bansal (2) Received 25 August 2022, Accepted 3 October 2022, Scheduled 9 October 2022 (*) Corresponding author: Sonali Kumari (sinha.sonali08@gmail.com). (1) Manav Rachna International Institute of Research and Studies University, Faridabad, India. (2) G.B. Pant, DSEU, Okhla 1 Campus, New Delhi, India. In this paper, a compact triangular-shaped multiband antenna is proposed for linear as well as circular polarization. The proposed antenna is well suitable for Wi-Max, C-band, and X-band applications. 2.4 GHz is very well suitable for RFID applications. The antenna is excited with a feed of variable width at one corner of the main patch. The parametric analysis has been done for feed width, slot cutting on the ground, and tapering cut at both remaining corners of the main patch. Circular polarization is achieved due to a tapering cut. It achieved circular polarization at 2.4 and 9.8 GHz and linear polarization at 4.31 and 6.75 GHz. The structure shows an impedance bandwidth of 2.13-3.02 GHz and 4.01-10.00 GHz. The measured peak gain is achieved to be 3.66 dB. A good agreement is found between simulated and experimental results.