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Let x(t) be a signal whose Fourier transform X(ω) is nonzero only over 3 ≤ |ω| ≤ 9. Further, only frequencies 5 ≤ |ω| ≤ 7 contain useful information (the other frequencies can be considered to contain noise or different channel information).
(a) What is the smallest sampling rate that will enable exact reconstruction of the useful signal if we do not perform any filtering on x(t) before sampling?
(b) How will the answer of part (a) change if it is permitted to pass x(t) through a filter before sampling? Explain.
Design a 4-bit binary incrementer using HALF-ADDERS as building blocks. The circuits implements A+1=S where A and S are 4-bit binary numbrers. The circuit has 4 inputs A3A2A1A0 and 5 outputs : S3S2S1S0 and overflow C4. Draw the circuit diagram wit..
Such an adder is called aripple-carry adder. Overflow (or underflow in subtraction) isdetected by an additional small logic circuit where the inputs areprovided by the sign bits of the input and output integers.
Draw up a flow chart for testing any four-terminal MOSFET with an ohmmeter which can be used to conclusively determine which lead is the gate, which lead is the body, whether the device is an n-channel or p-channel, and whether the device is a D-m..
Using the same average annual Virginia electricity consumption as in the question 3, estimate the percentage (%) of the average VA household electricity use that the solar arrays can provide annually.
A sinusoidal signal described by Cos (2pit+pi/4) passes through a linear time invariant (LTI) system that applies a gain of 2 and a time delay of 0.125 seconds to the signal. Write the mathematical expression that decribes the signal that will com..
A 220 V shunt motor has armature and field resistance of 0.2-ohm and 220-ohm respectively. The motor is driving a constant load torque and running at 1000 rpm drawing 10 A current from the supply.
Calculate the code word corresponding to the all-ones information sequence. Calculate the syndrome corresponding to an error in the third position assuming the code word corresponding to the allones input sequence.
Use an iterative solution of the diode logarithmic voltage-current relationship.
What type of transistor has an insulated gate? 2. An n-channel JFET is biased such that VGS = -2 V using self-bias. The gate resistor is connected to ground.
find the complete functions, p(t) and w(t) supplied by the element, not just a number, and graph p(t) and w(t). Choose appropriate intervals of time for your graphs. Assume that both v(t) and i(t) are zero for t
An enhancement mode MOSFET class AB output stage, The threshold voltage of each transistor is Vtn=-Vtp=1V, and the conduction parameters of the output transistors are Kn1=Kp2=5mA/V^2, Let Ibias=200uA.
The received power at a receiver antenna is -38 dBm. If the system impedance is 50 Ohms, what is the voltage at the receiver antenna. What is the total average power for a commercial AM transmitter with an unmodulated carrier power of 20 kW and 100%..
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