Microstrip Bandpass Filter with Reconfigurable Notch Response at 5.2 GHz using Defected Microstrip Structure

Authors

  • Mohamad Ariffin Mutalib Centre for Telecommunication Research & Innovation (CeTRI), Faculty of Electronic & Computer Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Malaysia
  • Z. Zakaria Centre for Telecommunication Research & Innovation (CeTRI), Faculty of Electronic & Computer Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Malaysia
  • N.A. Shairi Centre for Telecommunication Research & Innovation (CeTRI), Faculty of Electronic & Computer Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Malaysia
  • M.S.M. Isa Centre for Telecommunication Research & Innovation (CeTRI), Faculty of Electronic & Computer Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Malaysia

Keywords:

Bandpass Filter, Tunable Filter, Notch, Defected Microstrip Structure (DMS), PIN Diode

Abstract

An investigation of a new design of short circuit stub wideband bandpass filter integrated with reconfigurable notch characteristic is presented. The wideband bandpass filter was designed from a quarter-wavelength short circuit stub with folded topology in order to reduce overall physical dimension. The U-shaped DMS was designed on a microstrip line by defecting the bandpass filter. The reconfigurable characteristic was then realized by introducing PIN diode (BAP 64-02) as a switching element that is placed on top of the U-shaped DMS. When the diode was OFF, it produced a wideband bandpass response from 3.0 GHz to 6.0 GHz. On the other hand, when the PIN diode was ON, a sharp rejection of notch response at 5.2 GHz with a very low passband transmission coefficient was finally demonstrated. This type of filter is very useful in radar and wireless communication systems.

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Published

2016-08-01

How to Cite

Mutalib, M. A., Zakaria, Z., Shairi, N., & Isa, M. (2016). Microstrip Bandpass Filter with Reconfigurable Notch Response at 5.2 GHz using Defected Microstrip Structure. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 8(5), 75–79. Retrieved from https://jtec.utem.edu.my/jtec/article/view/802

Issue

Vol. 8 No. 5: May - August 2016

Section

Articles

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