Piezoelectrics & Acoustooptics, Volume. 46, Issue 5, 651(2024)
Design and Optimization of Wideband Temperature-Compensated Surface Acoustic Wave Filters
This paper presents a design method for wideband temperature-compensated surface-acoustic-wave filters. By analyzing the effects of varying Euler angles of LiNbO3 substrates, distinct electrode materials, and thicknesses on the surface-acoustic-wave resonator frequency response and spurious wave suppression, the most favorable Euler angles and electrode configuration for a wideband temperature-compensated surface-acoustic-wave filter are determined. The fabricated wideband temperature-compensated surface-acoustic-wave filter exhibits a temperature coefficient greater than -18.9 × 10-6/°C, a -3 dB relative bandwidth of 7.84%, and an insertion loss of 0.93 dB; additionally, it demonstrates effective out-of-band rejection.
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TAN Fazeng, LI Hualin, MA Jinyi, CHEN Wenyuan, HU Minglang, DU Xuesong, ZHAN Xuekui. Design and Optimization of Wideband Temperature-Compensated Surface Acoustic Wave Filters[J]. Piezoelectrics & Acoustooptics, 2024, 46(5): 651
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Received: Oct. 18, 2024
Accepted: Jan. 17, 2025
Published Online: Jan. 17, 2025
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