Design of Microstrip Combline Bandpass Filter on Different Substrates
M. Monika1, V. Poonkulali2, R. Thandaiah Prabu3, V. Yokesh4

1M. Monika, Assistant Professor, Department of ECE, Jeppiaar Institute of Technology, Sriperambudur, Chennai (Tamil Nadu), India.
2V. Poonkulali, Assistant Professor, Department of ECE, Jeppiaar Institute of Technology, Sriperambudur, Chennai (Tamil Nadu), India.
3R. Thandaiah Prabu, Assistant Professor, Department of ECE, Jeppiaar Institute of Technology, Sriperambudur, Chennai (Tamil Nadu), India.
4V. Yokesh, Assistant Professor, Department of ECE, Jeppiaar Institute of Technology, Sriperambudur, Chennai (Tamil Nadu), India.
Manuscript received on 13 February 2019 | Revised Manuscript received on 04 March 2019 | Manuscript Published on 08 June 2019 | PP: 196-199 | Volume-7 Issue-5S4, February 2019 | Retrieval Number: E10370275S419/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this contribution, microstrip combline filter with 5th order for the C band frequency is designed. Combline filter is derived from parallel coupled filter by placing a capacitor in the resonator at one terminal and ground at the opposite terminal. The filter is designed for FR4, RT/Duroid 6010 and Roger RO3010 substrates having different dielectric constants using an ADS2009. The characteristics like insertion loss and return loss has been discussed. From the simulation results, high dielectric constant substrate provides better return loss and smaller insertion loss for the selected material.
Keywords: Microstrip, Bandpass Filter, Combline, Dielectric Constant, Insertion Loss, Return Loss, Substrate.
Scope of the Article: Microstrip Antenna