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A comparative study between a micromechanical cantilever resonator and MEMS-based passives for band-pass filtering application

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4 Author(s)
Basu, J. ; Dept. of Electron. & Electr. Commun. Eng., IIT Kharagpur, Kharagpur, India ; Bhattacharya, A. ; Chakraborty, S. ; Bhattacharyya, T.K.

Over the past few years, significant growth has been observed in using MEMS based passive components in the RF microelectronics domain, especially in transceiver components. This is due to some excellent properties of the MEMS devices like low loss, excellent isolation etc. in the microwave frequency domain where the on-chip passives normally tend to become leakier and degrades the transceiver performance. This paper presents a comparative analysis between MEMS-resonator based and MEMS-passives based band-pass filter configurations for RF applications, along with their design, simulation, fabrication and characterization. The filters were designed to have a center frequency of 455 kHz, meant for use as the intermediate frequency (IF) filter in superheterodyne receivers. The filter structures have been fabricated in PolyMUMPs process, a three-polysilicon layer surface micromachining process.

Published in:

Students' Technology Symposium (TechSym), 2011 IEEE

Date of Conference:

14-16 Jan. 2011

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