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Question 1 If an electromagnetic wave described by the TE20 mode is excited and is propagating down the waveguide, what happens to the electromagnetic wave described by the TE10 mode? Question 2 Is Kz (the direction of propagation down the waveguide) solely dependent on the cross section of the guiding structure? Question 3 We learn in the TEM discussion that a center conductor is needed to support a TEM wave. Otherwise, only TE or TM waves can propagate down the wave guide. Consider a waveguide (for example, a circular length of pipe) and suppose we shine something like a laser beam down the waveguide. Is a TEM wave going from one end of the waveguide to the other? How do you reconcile this seemingly contradictory statements?
Design a synchronous sequential circuit to control the operation of an automatic coffee machine. A cup of coffee costs 15cents and the machine has two input slots. In one slot Only 10cent coins can be inserted , in the the other only 5cent coins.
design a circuit to compute F=(A*B*C) +3*D+12,A,B,C and D are 16 bit inputs and F is a 16 bit output. Use 16 bit multiplier and adder components, and ignore overflow issues.
Let us consider the detection of the framing bit in the T1 carrier by the receiver. Assume that the data bits in a frame assume values of 1 and 0 with equal probabilities of 0.5 and independent of each other. The framing bit alternates between 1 a..
Adding dopants to a sample of silicon is found to reduce the Hall coefficient by a factor of 10 and increase the conductivity by a factor of 5. What effect has this dopant addition had on the mean free path
If the battery is replaced with a 6 Volt battery it was experimentally determine that the no load speed is reduced to 120 rpm. For this situation, determine a new equation for angular velocity,(in rad/sec) versus Torque (in Nm).
For the following signal x[n] = ( 1 0 n 4 0 otherwise (a) Compute its spectrum following the definition of the Fourier transform. (b) Obtain its magnitude spectrum in one period . Note: pay attention to that the magnitude must be positive.
a transmitters last stage output impedance is 50 ohms. the transmitters antennas input impedance is between 30-j50
A three-stage amplifier is shown. The operating bandwidth is 500 KHz at a temperature od 25 degrees C. The output load is 1000 ohms. calculate the total NF as a number, calculate the output noise power, and calculate the output noise voltage.
two fair dice are tossed until 3 is hit (i.e., the total number of dots is 3) Determine the average (i.e., expected) number of tosses required to hit a sum of 3
Find two renewable energy application where ac/dc converters are used. Explain qualitatively the role of the converter in the application
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.
a) both stations begin to transmit at the same time b) one station begins to transmit at the first possible moment such that its transmission would not be detected by the other station before it began its transmission
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