Journal ArticleDOI
Theoretical analysis of planar bulk-acoustic-wave response
TLDR
The theory is used to optimize one of these devices by varying the thickness and interdigital transducer (IDT) separation so as to give minimum insertion loss, and also to find a new BAW device with low insertion loss.Abstract:
A detailed theoretical analysis for planar bulk-acoustic-wave (BAW) devices that results in a method for computing the bulk-acoustic-wave response for any orientation of any piezoelectric substrate is presented. The BAW responses for four devices is computed and are found to be in excellent agreement with published experimental results. The theory is used to optimize one of these devices by varying the thickness and interdigital transducer (IDT) separation so as to give minimum insertion loss. A similar optimization can be performed for other devices. The theory is also used to find a new BAW device with low insertion loss. >read more
Citations
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Proceedings ArticleDOI
Reducing AC impedance measurement errors caused by the DC voltage dependence of broadband high-voltage bias-tees
TL;DR: A bias-tee has been developed with a voltage-independent capacitor, suitable for DC voltages up to 500 V showing excellent performance up to several gigahertz, and a calibration technique with applied bias significantly improves the measurement accuracy.
References
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Journal ArticleDOI
Behaviour of device structures based on IDT-launched bulk acoustic waves in a parallel-sided plate of lithium niobate
P.D. Bloch,N.G. Doe,E.G.S. Paige +2 more
TL;DR: In this paper, the authors present device responses due to fast shear and longitudinal waves, which propagate between a pair of IDTs on an upper surface via a reflection from the lower surface of a parallel-sided plate of 41°-rotated Y-cut lithium niobate.
Proceedings ArticleDOI
Berlinite, A Temperature Compensated Material for Surface Acoustic Wave Applications
TL;DR: In this paper, the surface and pseudosurface acoustic wave properties of berlinite (α-AlPO 4 ) have been theoretically predicted in order to evaluate the merit of using this material in related surface acoustic wave devices.
Journal ArticleDOI
Analysis of planar bulk acoustic wave devices
TL;DR: In this paper, the authors present the results of a theoretical analysis of the bulk wave response in a material and present a more desirable response than those obtained so far, enabling one to design planar bulk acoustic wave (BAW) devices with a desirable response.