low frequency acoustic wave
Modelling of low frequency muffler based on acoustic black hole effect
... An acoustic filter is a device that comprises of a set of acoustic elements between the source and the ...with acoustic waves being convected downstream by the medium in motion and can be termed as ...
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Study of Surface Acoustic Wave Sensor
... Surface acoustic wave (SAW) sensors are a class of Micro Electro Mechanical System (MEMS), which rely on the modulation of the surface acoustic waves to sense a physical ...mechanical wave ...
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A New SAW Device Simulator Based on Mason s Equivalent Circuit Model
... Surface Acoustic Wave (SAW) devices have revolutionized the domain of telecommunications by the possibility to design compact and low cost filters ...for low-loss Radio Frequency (RF) ...
5
High frequency surface acoustic wave resonator based sensor for particulate matter detection
... radio frequency oscillator circuit at 262 ...of frequency, attenuation, phase shift, input impedance and the actual obtained ...MHz frequency (as presented in Figure 4[B]) and shows good agreement ...
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Acoustic Wave Signal Analysis Using Piezoelectric Coupling Device For Disc Counting Application
... When a piezoelectric transducer is mechanically stressed, it generates a voltage. This phenomenon is governed by the direct piezoelectric effect. This property makes piezoelectric transducers suitable for sensing ...
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Application of analyzer based X-ray imaging technique for detection of ultrasound induced cavitation bubbles from a physical therapy unit
... quite low, the imaging time was ...the acoustic wave length consistent with stand- ing ...high frequency and output powers as low as a therapeutic ...clinical acoustic systems ...
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Graphene coated rayleigh SAW resonators for NO2 detection
... resonant frequency of 262 MHz and consists of aluminium based inter-digital-transducers (IDT), producing a Rayleigh wave in the crystallographic ...an acoustic aperture of 720 ...a low-noise ...
5
Influence of Confined Acoustic Phonons on the Nonlinear Acousto-electric Effect in Doped Semiconductor Superlattices
... - acoustic phonon interaction, we have found the expressions of the nonlinear quantum acousto-electric ...temperature, acoustic wave frequency and the characteristic parameters of DSSL (For ...
8
Design of a High Frequency Driving Circuit of Surface Acoustic Wave Transducer
... On the basis of the several potential applications of droplet propulsion and emulsion separation by using the ultrasonic waves, the SAW driving circuit could be applied to separate two immiscible liquids. In this study, ...
6
Phonon spectroscopy with chirped shear and compressive acoustic pulses
... maximum wave vector in the phonon wave ...the frequency doubled (wavelength ∼400 nm) optical pulses were also carried ...the low-symmetry plane of GaAs, the strain pulse injected from the ...
5
The Effect Of High Frequency Wave In Vibro Acoustic Method For Crack Detection
... Infrared thermography is an application through the concept of energy emission. Every object that will be determined emits an amount of energy that will be detected by an infrared camera. Later, the energy emitted will ...
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Radiofrequency analysis using optical signal processing
... During the last decade the availability of the laser and of cheap and efficient charged coupled device ( CCD ) detector arrays [1.8] has led to the development of a wide range of special purpose systems capable of ...
290
Research on the Propagation of Extremely Low Frequency Electromagnetic Wave in Shallow Sea Area
... Extremely low frequency (ELF) electromagnetic (EM) wave radiation and propagation underwater has attracted great attention for a long time [1], such as underwater target detection [2, 3], submarine ...
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Low Frequency plasma wave Analyzer (LFA) onboard the PLANET B spacecraft
... the frequency range from dc to 40 ...sampling frequency of 128 Hz and coded into 14-bit string data, which can be compressed by the μ -CODEC algorithm into 8-bit string ...the low bit rate modes, the ...
6
Fabrication of high temperature surface acoustic wave devices for sensor applications
... To fabricate the devices that will operate at the frequen- cies mentioned above, the mass loading effect of the electrode mass has been studied. By adding or reducing the mass of the electrode a convenient means of ...
5
Reflectionless High-Selective Bandpass Filter Based on Acoustic Wave Resonators
... This work presents a very high-selective reflectionless bandpass filter with improved out-of-band rejection based on AW resonators. First, the lowpass protoype will be discussed. Then, taking advantage of the properties of ...
8
The Experiment of Acoustic Levitation and the Analysis by Simulation
... Acoustic levitation technology is mainly used to simulate various effects in the space environment, and better solve people’s increasingly high demands on the experimental environment. Although the space resources ...
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The Simulation and Experiment of a UWB Printed Dipole Antenna
... relatively low frequency (3 GHz). Since the current’s resonance frequency is decided by the length of the current, the operating frequency of the antenna can be reduced by increasing the path ...
10
Study of Physics-Based preconditioning with High-order Galerkin discretization for hyperbolic wave problems
... We have aimed to analyze the physical approximation by a study based on plane waves. This study allows to verify formally if the preconditioning has the same propagation properties that the model and if it is not the ...
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Offshore Construction
... an acoustic synthetic baseline positioning system with self-contained computing, for simple real-time sparse array subsea ...challenging acoustic operational envi- ...(medium frequency for most ...
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