Citation: |
Hongrui Lv, Xianglong Shi, Yujie Ai, Zhe Liu, Defeng Lin, Lifang Jia, Zhe Cheng, Jie Yang, Yun Zhang. Bulk GaN-based SAW resonators with high quality factors for wireless temperature sensor[J]. Journal of Semiconductors, 2022, 43(11): 114101. doi: 10.1088/1674-4926/43/11/114101
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Hongrui Lv, Xianglong Shi, Yujie Ai, Zhe Liu, Defeng Lin, Lifang Jia, Zhe Cheng, Jie Yang, Yun Zhang. 2022: Bulk GaN-based SAW resonators with high quality factors for wireless temperature sensor. Journal of Semiconductors, 43(11): 114101. doi: 10.1088/1674-4926/43/11/114101
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Bulk GaN-based SAW resonators with high quality factors for wireless temperature sensor
DOI: 10.1088/1674-4926/43/11/114101
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Abstract
Surface acoustic wave (SAW) resonator with outstanding quality factors of 4829/6775 at the resonant/anti-resonant frequencies has been demonstrated on C-doped semi-insulating bulk GaN. The impact of device parameters including aspect ratio of length to width of resonators, number of interdigital transducers, and acoustic propagation direction on resonator performance have been studied. For the first time, we demonstrate wireless temperature sensing from 21.6 to 120 °C with a stable temperature coefficient of frequency of –24.3 ppm/°C on bulk GaN-based SAW resonators. -
References
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