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Consider a message signal m(t) containing frequency components at 100, 200, and 400 Hz. This signal is applied to a SSB modulator together with a carrier at 100 kHz, with only the upper sideband retained. In the coherent detector used to recover the m(t), the local oscillator supplies a sinusoidal wave of frequency 100.02 kHz. Determine the frequency components of the detector output.
Three zero mean, unit variance random variables X,Y, and Z are added to form a new random variable, W = X + Y + Z. Random variables X and Y are uncorrelated, X and Z have a correlation coefficient of 1/2
The antenna has a 30 dB gain and has a radiation resistance of 85-ohm. This line is loaded by a matched source TX. The receiver antenna is located 5 Km from the transmitter antenna and the frequency is 900 MHz.
If a 250 us period clock signal must be transmitted with a 10 kHz data signal on the same link, then what is the minimum bandwidth necessary to support both signals.
A sequential circuit has two inputs (A and B) and contains one D flip-flop that has only D and clock inputs. If A = B the flip-flop is unchanged, otherwise the flipflop is complemented. Find the excitation equation for the D flip-flop
a. Using the superposition theorem, determine the current through the 12 ohms resistor. b. Convert both voltage sources to current sources and recalculate the current to the 12 ohms. c. How do the results of parts (a) and (b) compare
explain how to get an output greater than input at the appropriate band (bandwidth, range of frequencies present the highest response) without changing frequency response.
Write an algorithm in pseudo code that finds all prime numbers between 2 and 100. You may use any algorithm to compute them, but be sure that your pseudo code meets the three requirements of an algorithm: definiteness, effectively computable, and ..
A hybrid communication system uses both AMSC and FM. The information signal a(t) is first AMSC modulated with the subcarrier frequency 1000 Hz. Then it passes through an FM modulator with the carrier frequency 10Mhz.
In a test of a printed circuit board using a random test pattern, an array of 10 bits is equally likely to be 0 or 1. Assume the bits are independent. (a) What is the probability that all bits are 1s (b) What is the probability that all bits are 0s
When disconnected and fully charged, the voltage across the battery terminals is measured to be 13.8 V. When connected to a load that dissipates 18 W of power, the terminal voltage of the battery decreases to 12 V.
Waves and Strings: compute the tension in the top string (i.e. E string, lowest note) of a properly tuned guitar. You will likely need to spend a couple minutes on the internet to obtain length and any other important properties of the string.
Find a multiple output AND-OR gate circuit to realize the following function. You should be able to implement this in 6 gates total. Show your Karnaugh maps. F= ac + ad + b'd
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