Results 271 to 280 of about 55,399 (298)

A study on gas sensors using a SAW device

2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), 2014
When an open type stove is used indoors, NO 2 is generated by the combustion of the fuel, which can lead to respiratory diseases or allergic reactions. In addition, SO 2 is also generated by the combustion of fossil fuels, which can cause asthma and bronchitis.
Katutoshi Sugiyama, Katsutoshi Saeki, Minoru Saito Nihon, Yoshifumi Sekine   +3 more
openaire   +1 more source

SAW devices for communications applications

Canadian Journal of Electrical and Computer Engineering, 1990
The market for surface acoustic wave (SAW) devices now exceeds $100 million. The author presents an overview of the different SAW device structures available and summarizes their properties. He then describes a number of applications related to the communications industry, including general bandpass filters, Nyquist filters, clock recovery filters ...
openaire   +1 more source

Saw materials and devices in Japan

Ferroelectrics, 1982
Abstract This paper is a short review of the progress on surface acoustic wave (SAW) materials and devices in Japan. Special emphasis is given to the temperature dependence, the spurious wave generation and the electromechanical coupling coefficient for materials. TV IF filters and uni-directional transducers devices are summarized.
openaire   +1 more source

New architectures for feedthrough SAW recursive devices

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005
This paper presents an analysis of a new type of feedthrough recursive surface acoustic wave (SAW) device. The device combines a conventional SAW structure with positive feedback in a way that allows use of selective properties of the SAW structure, control of the central frequency and bandwidth, achieving significantly higher quality factors for given
Alexander N, Kalashnikov, Richard E, Challis   +1 more
openaire   +2 more sources

Frequency trimming of SAW devices

Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
This paper describes a frequency trimming technique suitable for GHz band SAW devices. A frequency shift was obtained by forming grooves on the substrate surface using an RF reactive sputter etching technique. Because the center frequency of a SAW transducer in a GHz band is very sensitive to the groove depth, a precise control of the etched amount is ...
openaire   +1 more source

SAW devices for communication systems

Proceedings., IEEE Ultrasonics Symposium, 2003
The author considers the possibilities of software engineering for the development, modeling, and design of full-custom, high-precision SAW (surface acoustic wave) filters for communication systems, e.g. GHz delay lines for clock recovery in light-wave transmission systems low-loss filters for mobile radios and cordless telephones, spectrum-shaping ...
openaire   +1 more source

Miniature taste sensing system based on dual SH-SAW sensor device: an electronic tongue

Sensors and Actuators B: Chemical, 2004
Julian W Gardner
exaly  

A novel architecture of implementing wavelet transform and reconstruction processor with SAW device based on MSC

Sensors and Actuators A: Physical, 2006
Changbao Wen, Changchun Zhu
exaly  

A Convenient Device in Sharpening Saws

Scientific American, 1887
openaire   +1 more source

An Acoustoelectric SAW/CCD Device

1978 Ultrasonics Symposium, 1978
D.L. Smythe, R.W. Ralston, B.E. Burke, E. Stern   +3 more
openaire   +1 more source