A new technique for improving performance of conventional CRLH resonators using IDC/UISs with enhanced harmonic suppression in balanced dual-band BPFs-Reference-Cited by-同舟云学术

A new technique for improving performance of conventional CRLH resonators using IDC/UISs with enhanced harmonic suppression in balanced dual-band BPFs

Published:2024-04-15 Issue: Volume: Page:
ISSN:0016-1136
Container-title:Frequenz
language:en
Short-container-title:

Author:

Eskandari Reza¹^ORCID,Tavakoli Mohammadbagher¹^ORCID,Setoudeh Farbod²^ORCID,Horri Ashkan¹^ORCID,Faghir Mirnezami Seyed Peyman¹^ORCID

Affiliation:

1. Department of Electrical Engineering, Engineering Faculty, Arak Branch , Islamic Azad University , Arak , Iran

2. Department of Electrical Engineering , 305465 Arak University of Technology , Arak , Iran

Abstract

Abstract The design of balanced filters based on composite right/left hand (CRLH) structure is well developed. Among those, few designs exist which although they provide some good responses, suffer from narrow stopbands and interdependent passbands. This paper proposes a new technique for improving the characteristics of dual-band balanced bandpass filters (B-BPFs) based on planar CRLH. Using unequal inductive stubs (UISs) attached to the interdigital capacitor (IDC) unit cell, we were able to achieve outstanding harmonic suppression and passband controllability. This structure offers higher degrees of freedom compared to conventional designs and provides better control over the filter specifications. Mathematical modeling, analysis, simulation, fabrication, and performance measurement of the proposed technique in a dual-band B-BPF are also provided. Our work resulted in an independent and controllable dual-band B-BPF with ultra-wide upper differential-mode (DM) stopband of 5.9f 1 and common-mode (CM) suppression of 40.4 and 32.6 dB for the first and second bands, respectively.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/freq-2023-0409/pdf

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