| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 737664 | Sensors and Actuators A: Physical | 2012 | 7 Pages |
Abstract
A tunable bandpass filters with low insertion loss, sharp cut-off characteristics, wide bandwidth and wide tunability is strongly expected for future reconfigurable and cognitive wireless systems. In this study, a wideband tunable filter with the center frequency of 1.08 GHz was fabricated by directly integrating Love wave resonators and electrostatically actuated MEMS variable capacitors on a 15° Y LiNbO3 wafer. The Love wave resonators have an extremely large electromechanical coupling coefficient (k2 ∼ 30%), providing wide bandwidth and wide tuning range. The 3 dB bandwidth was tuned from 146 MHz to 130 MHz by applying 15 V to one of the MEMS variable capacitors.
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Authors
Toshiki Yasue, Tomoya Komatsu, Nobuyuki Nakamura, Ken-ya Hashimoto, Hideki Hirano, Masayoshi Esashi, Shuji Tanaka,