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State the three main mechanisms responsible for attenuation of ultrasonic waves in a transmission medium.
Check the stability of the resulting design using CAD modeling over the frequency range of 1-12 GHz, or by using stability circles at a few frequencies.
(a)Determine the capacitance of an isolated conducting sphere of radius a in free space (Consider an outer conductor existing at r -> infinity). (b) The sphere is to be covered with a dielectric layer of thickness d and have a dielectric constant o..
Design an experiment that allows frequencies between 300-3300 Hz to pass with a 14 dB gain. At f = 10 KHz and f = 100 Hz, the gain should be -16 dB. Use a cascaded design consisting of first and second order Butterworth sections.
Suppose a 1 meter long bar expands 0.5 centimeters when heated. By how much will a 100 meter long bar of the same material expand when similarly heated?
one question during each cycle the velocity v in mms of a piston is v 6t - 6t2 where t is the time in sec. find the
Design a 4-bit register with 2 control inputs s1 and s0; 4data inputs I3,I2,I1 and I0; and 4 data outputs Q3,Q2,Q1 and Q1. When s1s0=00, the register maintain its value. When s1s0=01, the register loads I3...I0. When s1s0=10, the register clears i..
Let X be the maximum of the number of heads obtained when carlos and joe each flip a fair coin twice. Show the mapping from S to Sx, the range of X find the probabilies for the various values of X
Please list the properties of Discrete Fourier Transform. Explain each property with an example to show what it means physically and explain the physical meaning of Z Transform
Suppose that a 5 Mbps link is being shared by a number of users. Each user alternates between period of activity during which the user transmits at rate 1 Mbps and periods of silence, when the user does not transmit.
where x is a state variable and r is an input variable. Perform a change of variables in r, i.e., r (t) --> u (t),where the new system is linear without any approximations (hint: assume x (t) ismeasurable)
A telecommunication system has a link bandwidth of 10 MHZ, signal propagation of 3.5 x 10^8 m/s, transmitting as 1500 frames per minute, with 15000 bits per frame, over a distance of 100 km. What is the bandwidth-delay product?
Calculate the smallest area of the RCS pf the target if the transmitters peak power is 1MW, frequency =10GHz, sensitivity ofthe receiver is -100dB/W, antenna gain is 50dB. Perform the calculation for the reference condition.
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