Title :
Novel concept for microstrip stub resonant frequency control
Author :
Sergienko, Pavlo ; Prokopenko, Yuriy ; Vandenbosch, Guy A. E.
Author_Institution :
Coll. of Electron., Nat. Tech. Univ. of Ukraine “KPI”, Kiev, Ukraine
Abstract :
A novel concept for controlling a low-cost tunable microstrip filter is proposed. The microstrip stub controlling is realized by detaching a part of the stub from the substrate. The air gap between the substrate and the signal electrode is the heterogeneity which controls the stub effective permittivity, in this way providing a resonance frequency shift. By moving the stub 50 microns the resonance frequency is shifted about 1 GHz. An equivalent circuit model of the resonator is developed. Calculation results are in good agreement with finite-difference time-domain method (FDTD) and finite elements method (FEM) simulations.
Keywords :
air gaps; equivalent circuits; finite difference time-domain analysis; finite element analysis; microstrip filters; FDTD; FEM simulations; air gap; equivalent circuit model; finite elements method simulations; finite-difference time-domain method; low-cost tunable microstrip filter; microstrip stub controlling; microstrip stub resonant frequency control; resonance frequency shift; signal electrode; stub effective permittivity; substrate; Band-pass filters; Microstrip filters; Microwave filters; Resonant frequency; Resonator filters; Substrates; Tuning; MEMS; electromechanical tuning; microstrip; stub; tunable;
Conference_Titel :
Electronics and Nanotechnology (ELNANO), 2013 IEEE XXXIII International Scientific Conference
Conference_Location :
Kiev
Print_ISBN :
978-1-4673-4669-6
DOI :
10.1109/ELNANO.2013.6552072
