A Supplemental Method for Evaluating Quartz Transducers
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概要
- 論文の詳細を見る
A supplemental method, called double balanced bridge (DBB), is proposed to measure the quality of piezoelectric transducers. The DBB consists of a power divider, two RF bridges with device under test (DUT) terminals and a combiner, which form a doubly balanced bridge with upper and lower arms. In the DBB, the effect of parallel capacitance $C_{0}$ is directly canceled by a hardware, whereas the phase information is collected with a network analyzer employed in the standard method. The DBB seems to be useful because it gives a symmetrical admittance curve which is proportional to the amplitude of the particle velocity of the transducer. Reproducibility is found to be better than that obtained using the Japanese Industrial Standard method even for the transducers with spurious modes. It can be concluded that the DBB method provides a compatible testing tool for the piezoelectric transducers.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2003-07-15
著者
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Nakajima Haruhiko
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Ozaki Tadao
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Fujisho Keiji
Department of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technolog
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Fujisho Keiji
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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