for the mass displacement is given by (6) where f is the angle phase given by : (7) Maximum energy can be extracted when the excitation frequency matches the natural resonant frequency of the generator system ωn‚ given by : (8) The vibration structure for which resonant frequencies range from 10 kHz to 1 MHz is good at converting the high frequency energy of machine vibration with
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dB at 11GHz‚ consuming 18mA from the 1.8V supply. The paper also discusses design considerations such the effects of layout on frequency tuning and noise. iout Vbias Lg Vin Rs Ls M1 Rs Vin M2 Lg gmVgs i2ng gg Cgs Vgs iout i2nd Ls I. I NTRODUCTION Rapid evolution of wireless communication has resulted in a continuous trend towards utilizing higher frequencies for wideband communication applications. CMOS technology is of major interest for its low cost and high level of integration.
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*37262* Printed in Switzerland Geneva‚ 2012 ISBN 978-92-61-14021-2 Edition of 2012 Radio Regulations Resolutions and Recommendations 3 E Radio Regulations Resolutions and Recommendations Edition of 2012 Radio Regulations Resolutions and Recommendations Edition of 2012 © ITU 2012 All rights reserved. No part of this publication may be reproduced‚ by any means whatsoever‚ without the prior written permission of ITU. Note by the Secretariat This revision of
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numerically‚ including presentation of data in tables and calculation of statistics for central tendency‚ variability‚ and distribution. Methods are also presented for displaying data graphically‚ including line graphs‚ bar graphs‚ histograms‚ and frequency polygons. The description and graphing of study data result in better analysis and presentation of data. © Index terms: Data analysis Statistical analysis Published online before print 10.1148/radiol.2253012154 Radiology 2002; 225:622– 628 1
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deaths and providing safe guided measures. A new revolutionary microwave life detection system‚ which is used to locate human beings buried under earthquake rubble‚ has been designed. This system operating at certain frequency can remotely detect the breathing and heartbeat signals of human beings buried under earthquake rubble. By proper processing of these signals‚ the status of the person under trap can be easily judged. The entire process takes
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water‚ with a tall glass tube open at both ends (the water level with act as the closed end). 2. Determine the room’s air temperature‚ and also measure the diameter of the glass tube. Record the data. 3. Select a tuning fork and record the frequency (in Hz) in the data table. Record the data. 4. Strike the tuning fork against a rubber stopper‚ and hold it just above the opening of the glass tube. Raise or lower the glass tube/fork until the loudest sound is heard. 5. Once you hear the
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__________________________________________ Mission We achieve customer satisfaction through service excellence and operational responsiveness. To provide network access and telecommunication services. To advance the quality of life by delivering the best solution to the communications based needs of our subscribing publics. SID is a customer-motivated organization; always striving to deliver innovative solution to extend the boundaries of communication at the sea‚ on land and in the air. SID’s
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CHAPTER 1 Graphs are used to study the relationship between 2 things so you can see what the relationship is. Unrelated: 2 items that are not associated. Ex. Hair color is unrelated to shoe size Directly related/proportional: 2 items that are associated such that when one item increases‚ the other increases. The graph of 2 directly related items extends from lower left to upper right. Ex. Clothing size is directly related to one’s weight. Related/ proportional: Is a relationship but can’t
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Homework 2_1 ECET310 NOISE 1. Assume that a receiver has a first amplifier stage with a 5K input resistance‚ a gain of 300‚ an input audio signal of 20 V‚ and an operating temperature of 27oC. When the amplifier is operating with a bandwidth first of 10 MHz‚ find (a) the rms input noise levels (b) the audio output levels (c) the rms output noise levels PN = noise power in watts Tk = 27°C + 273 = 300°K a) Noise level Pn(in) = KT(k)BW = (1.38x10-23)(300°K)(10MHz) = 41.4 x 10^-15 W
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an unknown planet and must determine the value of the gravitational acceleration g using a simple pendulum at the end of an arm that is 0.500 m long. The astronaut counts exactly 47 full swings in 1.00 min. What is the value of g? 79. The frequency of the second hand on a clock is __________. 80. A simple pendulum has a string that is 20.0 cm long with a 100.0-g mass suspended from the end. Pulling the mass 2.0 cm to one side and releasing it starts the pendulum in motion. a. What
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