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Given a cascade of a preamplifier, mixer, and amplifier with the specifications shown in Table A.2,
a. Find the maximum gain of the preamplifier such that the overall noise figure of the cascade is 5 dB or greater.
b. The preamplifier is fed by an antenna with noise temperature of 300 K (this is the temperature of Earth viewed from space). Find the temperature of the overall system using a preamplifier gain of 15 dB and also for the preamplifier gain found in part (a).
c. Find the noise power at the amplifier output for the two cases of part (b).
d. Repeat part (b) except now assume that a transmission line with loss of 2 dB connects the antenna to the preamplifier.
A storage tank has a Diameter of 20ft and a height of 10ft. The output volumetric flow from this tank is given by fout(t)=2h(t) where h(t) is the height of the liquid in the tank. At a particular time the tank is at steady state with an input flow..
What is the maximum power dissipated in the load when the Thévenin voltage is 17 V cos(37 rad/s t + 24°), the Thévenin impedance is 127 -j 182-ohm and the load impedance is 127 + j 182-ohm
the current through a .2 μF capacitor is a rectangular pulse with an amplitude of 2 mA and a duration of 4 ms. Find the capacitor voltage at the end of the pulse when the voltage at the beginning is -2V.
64-bit ripple-carry adder and a 64-bit carrylookahead adder with 4-bit blocks. Use only two-input gates. Each two-input gate is 15μm2, has a 50 ps delay, and has 20 pF of total gate capacitance. You may assume that the static power is negligible.
Assume we are only interested in the baseband portionof m(t) that captures 90% of the signal's total power. What is the effective bandwidth of the new baseband signal of interest,r(t)
compute the amplitude spectrum, phase spectrum, and power spectrum using the
Design a full-wave rectifier to provide a dc output of 28V at a current of 4A, with a ripple of not more than 3%. A linevoltage of 120V (rms), 60Hz is available.
The minimum stopping distance for a car traveling at a speed of 30m/sand is 60 m including the distance traveled during the driver's reaction time of 0.53 s. What is the minimum stopping distance for the same car traveling
An ideal synchronous machine delivers 250 kW of average power to a3.8 kV line-line, 60 Hz power system at a leading power factor of0.8. The machine has 8 poles. a) What is the magnitude of the current supplied to the power system
The change in entropy when an unknown mass of water at 100°c is vaporized and converted to steam at 100 °c is 6.05 x 103 J/K. Find the mass of water
Write a short report in which you compare the application of the method of undetermined coefficients to a single ODE and to a system of ODEs, using ODEs and systems of your choice.
Find the minimized SUM OF PRODUCTS for the following f = ( x1 AND (not x2) AND (not x3) ) + ( x1 AND x2 AND x4 ) + ( x1 AND (not x2) AND x3 AND (not x4) )
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