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

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 f...

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Published inBahria University Journal of Information & Communication Technology Vol. 10; no. 2; pp. 1 - 9
Main Authors Butt, Naureen, Jaffar, Ayesha, Shaikh, Zeeshan Azmat
Format Journal Article
LanguageEnglish
Published Karachi Bahria University 01.12.2017
Subjects
Attenuation
Computer engineering
Design
Design optimization
Epoxy resins
Impedance
Insertion loss
Intermodulation
Low pass filters
Microwave filters
Mixers
Mobile communication systems
Network analysers
Performance evaluation
Radio frequency
Signal processing
Wireless communication systems
Wireless communications
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ISSN1999-4974
2304-7593

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Summary: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.
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ISSN:1999-4974
2304-7593