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- Title
Tunability of bulk acoustic wave solidly mounted resonators using passive elements: Concept, design and implementation.
- Authors
Hassan, M. El; Kerherve, E.; Deval, Y.; David, J.B.; Belot, D.; Shirakawa, A.A.
- Abstract
This paper presents the impedance behavior of the bulk acoustic wave solidly mounted resonators (BAW-SMR). Also, it shows the effects of the addition of passive elements ( L, C) to this type of resonators. In addition, this article presents a tunable BAW-SMR filter realized in a ladder topology used for the 802.11b/g standard (2.40-2.48 GHz). Mainly, the filter fulfills the requirements for the WLAN 802.11 b/g standard, presenting a measured −3.3 dB of insertion loss, -12.7 dB of return loss and selectivity higher than 33 dB at ±30 MHz of the bandwidth. This tunable BAW-SMR filter has reduced dimensions (1035 × 1075 μm2). Moreover, we show how to shift the center frequency of this tunable filter toward higher and lower frequencies by adding passive elements. Measured shifts of −1.3% of the center frequency (2.44 GHz) toward lower frequency and +0.6% of the center frequency toward higher frequencies are obtained. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2011.
- Subjects
ACOUSTIC surface waves; ELECTRIC resonators; BANDWIDTHS; WIRELESS LANs; TOPOLOGY; SURFACE mount technology; ELECTRIC filters
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2011, Vol 21, Issue 5, p496
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.20554