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Circularly polarized ACPW Fed CRLH-TL based ZOR antenna with band notch characteristics

Published online by Cambridge University Press:  26 November 2019

Kalyanbrata Ghosh Open the ORCID record for Kalyanbrata Ghosh [Opens in a new window]  and
Sushrut Das
Kalyanbrata Ghosh
Affiliation:
Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
Sushrut Das*
Affiliation:
Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
*
Author for correspondence: Sushrut Das, E-mail: sushrut@iitism.ac.in
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Abstract

In this paper, two asymmetric co-planar waveguide (ACPW) fed circularly polarized (CP) zeroth-order resonance (ZOR) antennas (Antenna I and II) are presented using a composite right and left-handed transmission line (CRLH-TL) approach. By adding a stub on the left side of the ACPW ground and adjusting its length, circularly polarization property has been achieved in Antenna I. The simulated 3 dB axial ratio bandwidth (ARBW) of Antenna I is 1750 MHz (3.50–5.25 GHz). Next, the left side ground plane of Antenna I is further defected by etching a quarter wavelength slit to introduce a notch band (Antenna II). Antenna II has an extended 10 dB return loss bandwidth of 2200 MHz (3.28–5.48 GHz) with a band notch from 4.18–4.65 GHz that isolates the WiMAX and 5.2 GHz WLAN bands. ARBWs of 1080 and 870 MHz are achieved in the first and second band of Antenna II. The overlapping 3 dB ARBW and 10 dB return loss bandwidths of Antenna II in these two bands are 770 and 830 MHz, respectively.

Keywords

CRLH-TLcircular polarizationband notchmetamaterial antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Issue 5 , June 2020 , pp. 387 - 397
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019

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