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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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EXPERIMENTAL INVESTIGATIONS ON A SURFACE MICROMACHINED TUNABLE LOW PASS FILTER

By V. Janardhana, N. S. Pamidighantam, N. Chattoraj, J. S. Roy, S. Kuppireddi, and R. G. Kulkarni

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Abstract:
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 1 dB (up to 10 GHz), stop band attenuation of 20 dB 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.

Citation:
V. Janardhana, N. S. Pamidighantam, N. Chattoraj, J. S. Roy, S. Kuppireddi, and R. G. Kulkarni, "Experimental Investigations on a Surface Micromachined Tunable Low Pass Filter," Progress In Electromagnetics Research Letters, Vol. 27, 171-178, 2011.
doi:10.2528/PIERL11081803

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