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An AM signal is written as xc(t) = Ac (1+ µx(t))cos(2pi*fc*t) where fc is the carrier frequency, Ac is the carrier amplitude, µ is the modulation index, and x(t) is the baseband message signal. We assume that x(t) has absolute bandwidth W << fc, and that its amplitude has been normalized so that |x(t)| <= 1. If x(t) is a cosine of amplitude 1 and frequency fm << fc: 2)
• Obtain an expression for the amplitude spectrum X c(f) of the AM signal xc(t).
• Determine the power in the carrier and in the sidebands. Express the powers in units of dBm into a 50 ohm load. (Remember that the spectrum analyzer input impedance is 50 ohm) 3)Obtain numerical values in Item 2 if fm = 15 kHz, µ = 1/2, and the carrier amplitude and frequency are Ac = 1 and fc = 300 kHz 4)Repeat Item 2 for a message x(t) which is a square wave of amplitude 1, zero dc level, 50% duty cycle, and fundamental frequency fm 5)Obtain numerical values in Item 4 if fm = 15 kHz, µ = 1/2, and the carrier amplitude and frequency are Ac = 1 and fc = 300 kHz.
Suppose that an inductor is formed by N turns of a conductive wire wound around a magnetic material. The magnetic material forms a circular cylinder of radius r = 10 cm, and height h = 5 cm. The inductance of the inductor turns of N is defined as:..
determine the efficiency of a high frequency induction furnace which takes 10 minutes to melt 1.815 kg of aluminium the input of the furnace being 5 KW and the initial temperature 15 deg.
A 75- ohm lossless transmission line is interfaced to a load impedance that consists of a series connected resistor of 30 ohm and a capacitor of 10 pF. At an operating frequency of 2 GHz and for a wavelength of 10 cm.
Rayleigh Scattering. Calculate the % increase is attenuation due to Rayleigh scattering exhibited by light having a free-space wavelength 1535 nm as compared to light having a free space wavelength 1550 nm. Provide your answer in units of [%] and ..
Approximation of quarter circle using Bezier curve, Determine the Bezier curve of order 3 that approximates a quarter circle centered at (0,0), (1,0), (0,1).
b) find nonhomogeneous solution with method of undetermined coefficient with constants evaluated c) combine homogeneous soluton with nonhomogeneous solution to form the general solution calculate the unknown constant in homogeneous part
A baseband signal has frequency components from 5 kHz to 15 kHz. Determine (a) the theoretical minimum sampling rate and (b) the maximum time interval between successive samples.
1. Express the Boolean function f(X,Y,Z) = XY + X(Y + Z) in sum of products form showing the sum all nonzero minterms. 2. Express the Boolean function f(A,B,C,D) = A(B + BC) + ACD in sum of products form showing the sum all nonzero minterms.
An indiviual wishes to deposit an amount of money now and $100 every six months so that at the end of five years $1500 will have been accumulated. With interest 4% per year, compounded semiannually, how much should be deposited?
What bit pattern (after you remove the beginning and ending flags and any stuffed bits) will the receiver pass on for higher level processing?
The average orbital radius of Neptune is 2.8 billion miles. Given that distance, how long on average does it take light from the sun to reach the planet Neptune in hours (Speed of light in English system = 186,282.4 miles/second)
What is the problem you are investigating and explain the issue, its history, the impact it makes locally
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