Results 131 to 140 of about 228,379 (215)

Capacitive micromachined interdigital transducers

The Journal of the Acoustical Society of America, 2001
Capacitive Micromachined Ultrasonic Transducers (CMUTs) have become very popular for medical imaging and sonar applications during the last decade. They can compete with piezoelectric transducers in terms of efficiency and bandwidth. Recently, it has been noticed that these devices couple energy into silicon wafer in addition to the immersion medium ...
Goksen G. Yaralioglu, Mohammed H. Badi, Butrus T. Khuri-Yakub   +2 more
openaire   +1 more source

Multielement Interdigital Transducers for Structural Health Monitoring

IUS, 2018
This work presents an improved interdigital transducer for ultrasonic guided-wave generation and reception in structural health monitoring systems, where each finger constitutes an independent electrode that can be driven and sensed with a multichannel ...
A. Bulletti, P. Giannelli, M. Calzolai, L. Capineri   +3 more
semanticscholar   +1 more source

Magnetostatic wave interdigital transducers

Journal of Applied Physics, 1978
The design and operation of a novel type of magnetostatic wave transducer is described. The transducer is formed from an interdigital arrangement of narrow, open circuited microstrip fingers, each half an electromagnetic wavelength long. Experimental results in the frequency range 9–9.4 GHz are presented for 2, 4 and 10 finger transducers which are in ...
J. D. Adam, R. W. Patterson, T. W. O’Keeffe   +2 more
openaire   +1 more source

Active Matching of Interdigital Transducers

1981 Ultrasonics Symposium, 1981
Active matching circuits have been developed for matching SAW IDTs to 50 0 generators and receivers. 1 ow input impedance receiver a1 lows the elimination of the inductor usually needed to tune o ut the IDT capacity. The frequency dependence of the radiation admittance is compensated by a single stage active circuit.
A.F. Arbel, J.E. Bowers
openaire   +1 more source

XBAR-Structured Magnetoelectric Antenna With Magnetostrictive Interdigital Transducers

IEEE Electron Device Letters
This letter presents an ultra-compact magnetoelectric (ME) antenna based on a laterally excited bulk acoustic wave resonator (XBAR) structure integrated with magnetostrictive (MS) interdigital transducers (IDTs).
Yifan Fu, Rui Hu, Junru Li, Du Li, Yinuo Song, Bin Fang, Wenkui Lin, Zhongming Zeng, Xiangwei Zhu   +8 more
semanticscholar   +1 more source

Spectrum-Clean Dispersion-Engineered YX-LN/SiO₂/Si Wideband SH-SAW Resonators With Crossed Interdigital Transducers

IEEE Transactions on Electron Devices
This work demonstrates the spectrum-clean shear-horizontal surface acoustic wave (SH-SAW) resonators with large electromechanical coupling coefficient ( ${k}_{\text {eff}}^{{2}}{)}$ and substantial admittance ratio ( ${A}_{R}{)}$ in a lithium niobate ...
Zhi-Qiang Lee, Tzu-Hsuan Hsu, Ya-Ching Yu, Cheng-Chien Lin, Yi-Cheng Liao, Sinwoo Cho, Ruochen Lu, Ming-Huang Li   +7 more
semanticscholar   +1 more source

Quasi-harmonic interdigital transducers

1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium, 2002
This paper presents a quasi-harmonic interdigital transducer (QHIDT) utilized for SAW filters. The QHIDT consists of several single electrode transducers which serve as elemental transducers. The width and position of the electrodes in the elemental transducer was considered to eliminate the inter multi-reflection between the electrodes. Therefore, the
X.T. Yin, D. Zhang, P. Wu, J. Yu
openaire   +1 more source

Field theory for interdigital transducers

Journal of Applied Physics, 1978
The analysis of quasiacoustic-wave excitation by the uniform interdigital transducer is approached from a field point of view. Fields within the transducer are expressed in terms of a set of normal-mode functions which have been defined specifically for the interdigital array.
M. J. Zuliani, V. M. Ristic
openaire   +1 more source

Diffraction analysis of slanted finger interdigital transducers

2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121), 2001
For analysis, Slanted Finger Interdigital Transducers (SFIT) are usually divided into many channels in parallel to the propagation direction. Every channel is considered to be a subfilter. This procedure neglects the diffraction completely. The present paper introduces the diffraction in the SFIT analysis by use of the Angular Spectrum of Plane Waves ...
G. Martin, D. Chen
openaire   +1 more source

Interdigital transducer analysis using equivalent PSpice model

Ultrasonics, 2002
Interdigital transducers generating surface acoustic waves have found numerous applications. The present paper deals with an equivalent model of a single interdigital transducer as well as an SAW filter complying with the PSpice programme for the analysis of electronic systems.
M, Ljrbańczyk, Z, Waltar, W, Jakubik
openaire   +2 more sources