Piezoelectrics & Acoustooptics, Volume. 42, Issue 4, 453(2020)
A SAW Filter with Low Insertion Loss and High Suppression
In this paper, a low loss and high suppression surface acoustic wave filter is developed by the methods of pitch-modulated IDT and two acoustic channel designs. The filter uses 64°Y-X LiNbO3 as the substrate material, its center frequency is about 475 MHz, the insertion loss is less than 2 dB, the stop band rejection is better than 60 dB and the relative bandwidth of 1 dB is about 5%. The developed filter has the characteristics of low insertion loss and high stop band rejection. The results show that the design method has good practicability.
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CHEN Yanguang, DONG Jiahe, CHEN Qinghua, JIANG Shiyi, CHEN Huazhi, LI Hualin, CHEN Shangquan, LU Chuan, ZHAO Xuemei. A SAW Filter with Low Insertion Loss and High Suppression[J]. Piezoelectrics & Acoustooptics, 2020, 42(4): 453
Received: Jun. 30, 2020
Accepted: --
Published Online: Apr. 21, 2022
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