most common transducer is a 40 kHz one‚ based on amplification and impedance matching with a mechanical horn-like design. It is capsuled in an open housing that allows air flow through one side. Water proof Transducers are also available (Murata) but are usually somewhat less sensitive. Elements for precision measurements are often based on thickness expansion mode of the piezoelectric material in combination with impedance matching layers. This design can easily be hermetically sealed but is primarily
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which is a part of inner conductor. With this applicator‚ electromagnetic (EM) wave at 430 MHz and ultrasound at l MHz are applied simultaneously. Ultrasound is greatly reflected at the boundary surface between different media‚ because its acoustic impedance is different. So when ultrasound is applied to human tissues‚ it is necessary to incident on water in advance of the
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shunt feedback amplifier. The amplifiers were implemented in a standard 90-nm CMOS process and were operated with a 1V supply voltage. Low-noise amplifier measurements were taken for parameters such as power gain‚ noise figure‚ input matching‚ output matching‚ reverse isolation‚ stability‚ and linearity. Based on the employed figure-of-merit‚ the cascoded common-source low-noise amplifier achieved the best performance among the three with a simulated gain of 13.8 dB and noise figure of 1.7
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Frequency Wavelength Period Threshold Hearing loss/hearing impairment Concepts: Condensation vs. Rarefaction Constructive vs. Destructive interference of waves Physical vs. Psychophysical measures of sound Impedance vs. admittance Impedance mismatch and Impedance matching Sound transduction Acoustic energy Mechanical energy Hydraulic energy Electrical impulses Otogenic development Germ layers of embryo (no function) Action Potential Inhibitory vs. Excitatory neural response
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LabVIEW (Laboratory Virtual Instrument Engineering Workbench)‚ created by National Instruments is a graphical programming language that uses icons instead of lines of text to create applications. A LabVIEW program consists of one or more virtual instruments (VIs)‚ Virtual instruments are called such because their appearance and operation often imitate actual physical instruments. The objective of developing a virtual interface that acquires data from physical instrument (pH probe) used in the monitoring
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DESIGN OF SIMPLE INTEGRATED RECTENNA FOR GREEN ENERGY HARVESTING TAN SHI YIING UNIVERSITI TEKNOLOGI MALAYSIA UNIVERSITI TEKNOLOGI MALAYSIA DECLARATION OF THESIS / UNDERGRADUATE PROJECT PAPER AND COPYRIGHT Author’s full name : Date of birth Title : : Tan Shi Yiing ________________________________________________ 3 October 1988 ________________________________________________ Design of Simple Integrated Rectenna for ________________________________________________ Green Energy Harvesting
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Microstrip‚ Stripline‚ and CPW Design Iulian Rosu‚ YO3DAC / VA3IUL‚ http://www.qsl.net/va3iul In the first years of microwave development the Rectangular Waveguide become the dominant waveguide structure largely because high-quality components could be designed using it. One of the main issues was its narrow bandwidth due to the cut-off frequency characteristic. Later‚ researchers try to find components that could provide greater bandwidth and possible miniaturization‚ and therefore they examined
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A 2.45 GHz RFID System for Electronic Toll Collection B. Tech. Project by Praneeth Tammiraju 04007032 Index 1. Introduction 2. RFID in ETC a. RFID – a review b. The actual role c. Technicalities in brief 3. The Reader Design a. The transceiver design b. Circuit description c. The PCB of the reader d. Programmability of the reader 4. The Transponder Design a. Broad Overview b. Redesigning rectifier 5. Communication Protocol 6. Conclusion 7. References 2 3 3 3 4 6 6 7 9
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24 IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS‚ VOL. 2‚ NO. 1‚ MARCH 2012 Design Optimization and Implementation for RF Energy Harvesting Circuits Prusayon Nintanavongsa‚ Student Member‚ IEEE‚ Ufuk Muncuk‚ David Richard Lewis‚ and Kaushik Roy Chowdhury‚ Member‚ IEEE Abstract—A new design for an energy harvesting device is proposed in this paper‚ which enables scavenging energy from radiofrequency (RF) electromagnetic waves. Compared to common alternative energy sources
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CMOS DESIGN AND ANALYSIS OF ULTRA WIDE BAND RECEIVERS ABSTRACT Ultrawide band is a unique technology which is used for commercial communications. In this ‚I will explain about UWB and how to integrate it with CMOS technology.This is by designing a UWB receiver using CMOS technology. Use Verilog to build behavioral model of LNA‚mixer‚bandpass filter‚integrator.Instante the components in Cadence and run simulation in time domain. In this paper ‚I have specified the design considerations of ultra
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