RF MEMS tunable band reject filter using metamaterials

Author

Pradhan, Biswajeet ; Gupta, Bharat

Author_Institution

Dept. of Electron. andTelecommunication Eng., Jadavpur Univ., Kolkata, India

fYear

2014

fDate

16-17 Jan. 2014

Firstpage

1

Lastpage

4

Abstract

Tuneable band reject filter is a very critical component of electronic warfare. The design is of such a filter using MEMS technology presented on CPW transmission line on silicon substrate using Complementary Split Ring Resonators (CSRRs) and RF MEMS variable capacitor, enabling compatibility with planar IC technology. The CSRRs are etched on both the signal line and ground planes of the CPW. Tunability of the band reject filter is achieved by putting the MEMS bridge in either up or down state. Through electrostatic actuation of the RF-MEMS switched capacitor, the electrical characteristics of the filter is modified, so that its resonance frequency can be tuned. The rejection of stop bands are around -20.19dB for down state around the centre frequency 35.32GHz and -18.29dB for up state around the centre frequency 38.80GHz.

Keywords

band-stop filters; coplanar waveguides; micromechanical devices; microwave metamaterials; resonator filters; varactors; CPW transmission line; MEMS bridge; RF MEMS tunable band reject filter; RF MEMS variable capacitor; RF-MEMS switched capacitor; complementary split ring resonator; coplanar waveguide; electronic warfare; electrostatic actuation; frequency 35.32 GHz; frequency 38.80 GHz; metamaterial filter; planar IC technology; Bridge circuits; Capacitors; Micromechanical devices; Optical filters; Optical resonators; Radio frequency; Resonator filters; CSRR Filter; RF MEMS; RF characterization; metamaterial;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communication and Instrumentation (ICECI), 2014 International Conference on

Conference_Location

Kolkata

Print_ISBN

978-1-4799-3982-4

Type

conf

DOI

10.1109/ICECI.2014.6767378

Filename

6767378