Design, Simulation and Fabrication of a Wideband Filter Using Multi-Mode Resonators in Three Layer Stripline Structure

Subject Areas : Renewable energy

Mehdi Karimiyan ¹ ( MSc/Islamic Azad University - Najafabad Branch )
Pedram Seyed eftetahi ² ( Iran Information Services Company )
Amir Mohammad Khezri ³ ( MSc/Rastafan Ertebat Company )

Received: 2009-11-13 Accepted : 2010-09-03 Published : 2011-02-01

Keywords: Coupling, Stripline, tree-layer stripline, multi-mode resonators, virtual resonance, slope of filter,

Abstract :

In this paper, in order to overcome the coupling and fabrication constraints of microstrip structures, 3 layer stripline structure be introduced and based on impedance steps and microwave coupled lines as impedance inverters and multi mode resonators, new and miniaturized structures are proposed. Using this structure, several 2-6 GHz wideband filters has been designed and simulated, and some effective techniques to reducing virtual resonances and improving slope of filter introduced. Finally, a wideband filter is fabricated and using simulation and measurement, efficiency of method is shown.