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Design and implementation of compact tri- and quad-band SIW power divider using modified circular complementary split-ring resonators

Published online by Cambridge University Press:  06 January 2022

Tharani Duraisamy Open the ORCID record for Tharani Duraisamy [Opens in a new window] ,
Selvajyothi Kamakshy ,
Karthikeyan Sholampettai Subramanian ,
Rusan Kumar Barik Open the ORCID record for Rusan Kumar Barik [Opens in a new window]  and
Qingsha S. Cheng
Tharani Duraisamy*
Affiliation:
Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design and Manufacturing, Kancheepuram, Tamil Nadu, India
Selvajyothi Kamakshy
Affiliation:
Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design and Manufacturing, Kancheepuram, Tamil Nadu, India
Karthikeyan Sholampettai Subramanian
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
Rusan Kumar Barik
Affiliation:
Engineering Optimization and Modeling Center, Reykjavik University, 102 Reykjavik, Iceland
Qingsha S. Cheng
Affiliation:
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
*
Author for correspondence: Tharani Duraisamy, E-mail: [email protected]
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Abstract

This paper presents a miniaturized tri- and quad-band power divider (PD)based on substrate integrated waveguide (SIW). By adopting different types of modified circular complementary split-ring resonators on the top surface of SIW, multiple passbands are generated propagating below the SIW cut-off frequency. The working principle is based on evanescent mode propagation that decreases the operating frequency of the PD and helps in the miniaturization of the proposed structure. The operating frequency of the proposed PD can be individually controlled by changing the dimensions of the resonator. To verify the proposed concept, a tri-band and a quad-band PD exhibiting 3 dB equal power division at 2.41/3.46/4.65 GHz and 2.42/3.78/4.74/5.8 GHz are designed using the full-wave simulator, validated through circuit model, fabricated and experimentally verified. The measured results agree well with the simulations. The proposed PDs have good performance in terms of reasonable insertion loss, isolation, minimum amplitude and phase imbalance, smaller footprint, easy fabrication and integration. The size of the fabricated prototype is 18.3 mm × 8.4 mm, which corresponds to 0.205λg × 0.094λg, λg being the guided wavelength at the first operating frequency.

Keywords

Modified circular complementary split-ring resonatorpower dividerquad-bandsubstrate integrated waveguidetri-band
Type
Passive Components and Circuits
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 10 , December 2022 , pp. 1241 - 1249
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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