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Tunable high-Q SAW resonator loaded on a changing capacitance
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作者 G.Ya.Karapetyan V.E.Kaydashev +4 位作者 M.E.Kutepov T.A.Minasyan V.A.Kalinin v.o.kislitsyn E.M.Kaidashev 《Journal of Advanced Dielectrics》 CAS 2020年第1期55-60,共6页
A tunable high-Q surface acoustic wave(SAW)resonator in the form of several parallel-connected interdigital transducers loaded on a varying capacitance on lithium niobate substrates was developed and studied.The worki... A tunable high-Q surface acoustic wave(SAW)resonator in the form of several parallel-connected interdigital transducers loaded on a varying capacitance on lithium niobate substrates was developed and studied.The working frequency range was 90-2450 MHz.A method of calculating such resonators,considering losses in the metal film as well as losses due to the propagation of SAWs and transformations into bulk waves is proposed.Such a design allows one to obtain a quality factor over 5000 in the frequency range 2400-2483 MHz.The resonant frequency shifts by 600 kHz when the capacitance changes by±25%of the value of 21 pF(or 32 ppm/pF)and has an almost linear character. 展开更多
关键词 Crystal growth directional crystallization defects internal stresses analytical methods
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