Design of compact bandpass filter for WiMAX and UWB application using asymmetric SIRs and DGS
- Authors: Sheikh T.A.1, Borah J.1, Roy S.2
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Affiliations:
- North Eastern Regional Institute of Science and Technology
- National Institute of Technology
- Issue: Vol 59, No 6 (2016)
- Pages: 269-273
- Section: Article
- URL: https://journals.rcsi.science/0735-2727/article/view/176841
- DOI: https://doi.org/10.3103/S0735272716060066
- ID: 176841
Cite item
Abstract
This paper considers a novel compact tri-band microstrip bandpass filter, the design of which employs asymmetric SIRs and DGS for achieving the characteristics of low insertion loss, high selectivity, wider range of bandwidth, and low group delay for 2.5/3.4 GHz (WiMAX) and 4.14–5.32 GHz (UWB) bands. The novel filter design implies the intentional selection of impedance ratio R and the length of the microstrip of asymmetric SIRs; in addition, DGS is used to improve the coupling strength of the last band. The scattering parameters of the three passbands have the following values: insertion losses S21 are–0.26/–0.07/–0.05 dB, and return losses S11 are–11.29/–19.25/–22.64 dB, respectively. The response of the filter was simulated using Ansoft HFSS simulator.
About the authors
Tasher Ali Sheikh
North Eastern Regional Institute of Science and Technology
Author for correspondence.
Email: tasher372@gmail.com
India, Nirjuli
Janmoni Borah
North Eastern Regional Institute of Science and Technology
Author for correspondence.
Email: borah1989@gmail.com
India, Nirjuli
Sahadev Roy
National Institute of Technology
Author for correspondence.
Email: sahadevroy@gmail.com
India, Arunachal Pradesh