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Calculations of parameters of BAW microwave composite resonators
Proceedings of the 1999 Joint Meeting of the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (Cat. No.99CH36313), 2003This paper uses available models to calculate the main operating parameters of BAW microwave composite resonators. Although such resonators can be used as devices for characterization of the underlying substrate, they can be expected to reach comparatively good performances if the substrate is made from very low loss material, such as YAG driven into ...
B. Dulmet, G.D. Mansfeld
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Design of resonance based DC current sensor using BAW quartz resonators
Sensors and Actuators A: Physical, 2018Abstract A novel approach is attempted to measure DC current in the range of 0–0.7 A in this paper. The proposed current sensing system is designed using an AT-cut BAW quartz resonator sandwiched at the center of the rectangular beam. The SMA wire bonded over the rectangular beam changes its shape with the change in input current.
Sameera Pisupati +4 more
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All-Pass Based Filter Design Using BAW Resonators
2019 IEEE International Ultrasonics Symposium (IUS), 2019The integration of multiple bands and higher power standards lead to enhanced interference problems and make higher attenuation levels in next-gen RF-Front-Ends necessary. This paper introduces an all-pass based BAW filter design concept for notch, band-stop and band-pass filter topologies to indicate the possibilities and the impact of key parameters ...
Andreas Bogner +5 more
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BAW radiation from LSAW resonators on lithium tantalate
2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263), 2002We report the first direct measurements of bulk-acoustic waves radiated by a leaky SAW resonator on 36/spl deg/YX-LiTaO/sub 3/. The BAW radiation patterns on the backside of the piezoelectric substrate were measured with the help of a scanning laser interferometer probe.
J.V. Knuuttila +5 more
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Stacked crystal resonator: A highly linear BAW device
2009 IEEE International Ultrasonics Symposium, 2009Besides small size, exceptional insertion loss and outstanding isolation, bulk acoustic wave (BAW) filters and duplexers are often the preferred choice in the transmit path of mobile frontend due to their excellent power handling capabilities. However, they exhibit a nonlinear behavior, causing generation of higher harmonics and a sensitivity of the ...
Martin Handtmann +3 more
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BAW resonators based on aluminum nitride thin films
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027), 2003The fabrication and the characterization of solidly mounted (SMR) and membrane-based (TFBAR) bulk acoustic wave resonators made of piezoelectric aluminum nitride (AlN) thin films are presented. The resonance frequencies are 2.4 and 3.5 GHz, respectively.
M.-A. Dubois, P. Muralt, V. Plessky
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P1I-4 Simulation of BAW Resonators Frequency Adjustment
2007 IEEE Ultrasonics Symposium Proceedings, 2007A theoretical approach of the frequency trimming of BAW filters is presented. We discuss the way to integrate this step already in the design stage by considering the frequency adjustment of worst cases. In particular, we show that the frequency trimming puts some requirements on the acoustical design of resonators.
Alexandre Reinhardt +7 more
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4E-3 Spurious Mode Suppression in BAW Resonators
2006 IEEE Ultrasonics Symposium, 2006Designing bulk acoustic wave resonators for RF filter applications is governed by the need for a high quality factor (Q-value), a large piezoelectric coupling and the purity of the main resonance. The most powerful method to suppress spurious modes is terminating the edges of the resonators by a specific border region with a different eigenresonance ...
R. Thalhammer +3 more
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Calculating multimode generation in BAW transducers and resonators
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027), 2003A matrix method is given for calculating the frequency responses for the excitation amplitudes of the three acoustic modes in transducer-substrate geometries and in resonators. The effectiveness of the method is illustrated for typical resonator and transducer structures. Transducers and resonators can be multilayer; viscosity are taken into account. A
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Complementary-Switchable Dual-Mode SHF Scandium Aluminum Nitride BAW Resonator
IEEE Transactions on Electron Devices, 2022Dicheng Mo +2 more
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