An S band narrowband bandpass filter bulk acoustic wave(BAW)with center frequency 2.460 GHz, bandwidth 41 MHz, band insertion loss -1.154 dB, passband ripple 0.9 dB, out of band rejection about -42.5 [email protected] GHz and -45.5 [email protected] GHz was designed for potential UAV measurement and control applications. According to the design specifications, each FBAR stack was designed in BAW
... [Show full abstract] filter by using Mason model, each FBAR's shape was designed with the method of apodizied electrode. The acoustic-electromagnetic co-simulation model was built to validate the performance of the designed BAW filter. The presented design procedure is a common one, and it has two characteristics: (1) an acoustic-electromagnetic(A&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 outputs necessary in-plane geometry information to the A&EM co-simulation model. © 2017, Editorial Office of High Power Laser and Particle Beams. All right reserved.