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Radiation pattern of half-wave dipole. Use the FDFD method in 2D cylindrical coordinates to model a half-wave dipole antenna, excited by an z field in a small gap, similar to Problem 12.9. Excite the antenna at the appropriate frequency and measure the radiation pattern some distance from the antenna. How does this compare to the FDTD analysis of this antenna?
Problem 12.9
Determine the transfer function for a second order band pass filter with specifications. Chebyschev type with 1 db ripple in the pass band Lower cutoff frequency = 100 radians/sec Upper cutoff frequency = 169 radians/sec Pass band gain = 1
isible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.58 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separat..
What are eigenvalues and eigenvectors associated to in electrical engineering?
(a) Using the default power transistors, determine the minimum supply rail voltage required if TJ
Assume we need to design a cellular system that covers an areaof Radius R=20 miles.For practical reasons (cost of BS , handoffcapability,etc.) ,each cell should cover at least an area of radiusr=1 mile.FDD is used and that each simplex channel re..
Cellular membranes create voltage potentials by seperating thecharged ions. A membrane with 70 mV potential has 1 x 10^4 Na+ ionsflowing through it. Assuming the potential is constant, what is thechange of electrical potential energy experienced b..
Why is it not possible to process signals with steps - e.g. sawtooth signals - correctly using digital processing?
(b) Calculate the power dissipated in the MOSFET when the lamp is operating at its rated current. (c) The maximum output current available from the logic system is 30mA. Explain why an NPN transistor would be unsuitable for this appli..
A nameplate is given in Example 17.2. Find the rated torque, rated volt amperes, and maximum continuous output power for this motor.
What is the clearance requirement for a 120/240 V, single-phase, three-wire service at the point of attachment to the building Over the driveway Over the main roadway
Make a plot of group velocity versus frequency for frequencies from 0 Hz to 500 kHz. Your plot should have 3 different curves for the three modes of propagation. Be sure to identify the modes and all cutoff and resonant frequencies clearly.
Draw the individual and combined impedance (X pu) diagrams to a base of 10 MVA for the units and system - What would be the effect on the fault level of replacing the unit - Determine the pu impedance and the reactance of the interbus reactor for th..
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