Design of Dual Band-Reject Filter based on Short-Circuited Parallel Coupled Lines Structure at S-Band

Authors

  • Salman Raju Talluri Department of Electronics and Communications Engineering Jaypee University of Information Technology, Solan, Himachal Pradesh, India

Keywords:

Dual band reject filter, parallel coupled lines, stub, transmission line theory

Abstract

This paper presents a simple design of dual-band reject filter based on parallel coupled lines structure. Parallel coupled lines structure is a four-port network. A dual-band shunt resonator using this structure is obtained by short-circuiting two opposite ports to ground and connecting one of the two remaining ports to a transmission line in shunt. The fourth port is an open circuit. This modified parallel coupled lines structure has been connected with a high impedance transmission line to obtain the narrow dual band reject filter. Theoretical analysis has been performed in order to obtain the resonant frequencies. The numerical simulations have been performed and these results have been verified by the full-wave electromagnetic simulations for an S-band dual band reject filter with rejecting frequencies at 2.5 GHz and 3.5 GHz. The control over the band rejection frequencies is obtained by selecting the parameters of the parallel coupled lines in terms of gaps, widths, and lengths.

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Author Biography

Salman Raju Talluri, Department of Electronics and Communications Engineering Jaypee University of Information Technology, Solan, Himachal Pradesh, India

Salman Raju Talluri has completed his M.Tech from IITK in 2009 and obtained his Ph.D. titled "Analysis
of non-linear transmission lines for opposite phase and group velocities" in 2017 from Jaypee University
of Information Technology, Solan, Himachal Pradesh, India. His areas of interest include nonlinear transmission lines, microwave engineering, and antenna arrays. He is currently working as an assistant professor at the Jaypee University of Information Technology, Solan. He was with the Astra microwave products limited, Hyderabad for one year from 2006 to 2007. 

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Published

2020-10-22

How to Cite

Salman Raju Talluri. (2020). Design of Dual Band-Reject Filter based on Short-Circuited Parallel Coupled Lines Structure at S-Band. International Journal of Advances in Microwave Technology, 3(4), 180-184. Retrieved from https://ijamt.com/index.php/ijamt/article/view/44

Issue

Vol. 3 No. 4 (2018): Volume 3, Issue 4 (November 2018)

Section

Rasearch Paper