New microstrip bandpass filter design with sharp roll-off based on rectangular split resonators

Authors

  • Aqeel H. Al-Fatlawi Urmia University, Iran
  • Sadra Kashef Urmia University, Iran
  • Yaqeen Sabah Mezaal University of Information Technology and Communications, Iraq
  • Morteza Valizadeh Urmia University, Iran

DOI:

https://doi.org/10.37868/sei.v7i1.id472

Abstract

This paper presents a compact bandpass filter (BPF) with a triple rectangular split resonator optimized for high performance at a central frequency of 3.682 GHz. The filter achieves an exceptional voltage standing wave ratio (VSWR) of 1.088 and a return loss of 27.48 dB, demonstrating superior impedance matching. Additionally, the filter exhibits minimal insertion loss with S21?=0.38dB, ensuring efficient signal transmission. The design boasts a sharp roll-off rate of 87 and a narrow transition band of 0.196 GHz, making it suitable for high-selectivity applications. The compact size of the filter, measuring only 24?mm×24?mm, enhances its applicability in modern communication systems with limited space requirements.

Published

2025-04-30

How to Cite

[1]
A. H. Al-Fatlawi, S. Kashef, Y. S. Mezaal, and M. Valizadeh, “New microstrip bandpass filter design with sharp roll-off based on rectangular split resonators”, Sustainable Engineering and Innovation, vol. 7, no. 1, pp. 147-158, Apr. 2025.

Issue

Vol. 7 No. 1 (2025)

Section

Articles

Copyright (c) 2025 Aqeel H. Al-Fatlawi, Sadra Kashef, Yaqeen Sabah Mezaal, Morteza Valizadeh

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