Performance Evaluation and Optimization of Stepped Impedance and Stub-based Low-pass Filters for S-band Applications.

Naureen Butt; Ayesha Jaffar; Zeeshan Azmat Shaikh

Author(s)

Naureen Butt Department of Electrical Engineering, University of the Punjab, Lahore, Pakistan

Ayesha Jaffar Department of Electrical Engineering, Lahore University of Management Sciences (LUMS) Lahore, Pakistan

Zeeshan Azmat Shaikh Department of Electrical Engineering, University of the Punjab, Lahore, Pakistan

Abstract

- Wireless Communication is an integral part of modern communication systems. Microwave filters play a vital role in mobile and wireless communication systems. Microwave filters are used in most wireless communication systems having RF-front end for performing various signal processing tasks such as frequency selection, suppression of mixers unwanted intermodulation products etc. This paper presents the optimized design of low-cost microstrip technology based Sband low-pass filters using two different design topologies like: stepped impedance and stub-based filters. Low-pass filters of order N=5 are designed, optimized and simulated using the ADS tool to achieve minimum insertion loss (S21) in pass-band and attenuation greater than 20dB at 3.5GHz.Consequently, optimized filters are manufactured and tested using Vector Network Analyzer (VNA) for S21 parameter of device under test (DUT) . Finally, comparison of post simulation and measured results are carried out for the proposed filters.

Publication Details

Page(s) 2-10

DOI DOI not available

Published Journal: Bahria University Journal of Information & Communication Technologies, Volume: 10, Issue: 2, Year: 2017

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