EXPERIMENTAL INVESTIGATIONS ON A SURFACE MICROMACHINED TUNABLE LOW PASS FILTER

In this paper, a surface micromachined microwave tunable low pass filter, consisting of tunable shunt capacitors and series inductors, has been realized. The filter exhibits insertion loss of less than 1dB (up to 10 GHz), stop band attenuation of 20dB at 20 GHz, and cut-off frequency is changed to 8...

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Bibliographic Details
Published in:Progress in electromagnetics research. Letters 2011-01, Vol.27, p.171-178
Main Authors: Janardhana, V, Pamidighantam, S, Chattoraj, N, Roy, J.S, Reddy, K.S, Kulkarni, R.G
Format: Article
Language:English
Subjects:
Electric filters
Machining
Production processes
Properties
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Summary:In this paper, a surface micromachined microwave tunable low pass filter, consisting of tunable shunt capacitors and series inductors, has been realized. The filter exhibits insertion loss of less than 1dB (up to 10 GHz), stop band attenuation of 20dB at 20 GHz, and cut-off frequency is changed to 8 GHz with the application of DC actuation voltage in the structure. The filter has an overall dimension of 5.5 mm x 2 mm. The characteristics of tunable filter are investigated with and without packaging.
ISSN:1937-6480
1937-6480
DOI:10.2528/PIERL11081803