Design of an S band narrow-band bandpass BAW filter

Yang Gao; Kun-li Zhao; Chao Han

doi:10.1117/12.2287713

15 November 2017 Design of an S band narrow-band bandpass BAW filter

Yang Gao, Kun-li Zhao, Chao Han

Proceedings Volume 10605, LIDAR Imaging Detection and Target Recognition 2017; 106051F (2017) https://doi.org/10.1117/12.2287713
Event: LIDAR Imaging Detection and Target Recognition 2017, 2017, Changchun, China

Abstract

An S band narrowband bandpass filter BAW with center frequency 2.460 GHz, bandwidth 41MHz, band insertion loss - 1.154 dB, the passband ripple 0.9 dB, the out of band rejection about -42.5dB@2.385 GHz; -45.5dB@2.506 GHz was designed for potential UAV measurement and control applications. According to the design specifications, the design is as follows: each FBAR’s stack was designed in BAW filter by using Mason model. Each FBAR’s shape was designed with the method of apodization electrode. The layout of BAW filter was designed. The acoustic-electromagnetic cosimulation model was built to validate the performance of the designed BAW filter. The presented design procedure is a common one, and there are two characteristics: 1) an A and EM co-simulation method is used for the final BAW filter performance validation in the design stage, thus ensures over-optimistic designs by the bare 1D Mason model are found and rejected in time; 2) An in-house developed auto-layout method is used to get compact BAW filter layout, which simplifies iterative error-and-try work here and output necessary in-plane geometry information to the A and EM cosimulation model.

Citation Download Citation

Yang Gao, Kun-li Zhao, and Chao Han "Design of an S band narrow-band bandpass BAW filter", Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106051F (15 November 2017); https://doi.org/10.1117/12.2287713

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