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Derive equation (14.20) by treating the antenna and lossy line as a cascade of two networks whose equivalent noise temperatures are given by (14.18) and (10.15).
A 160-ft-diameter parabolic antenna is driven by a 10-W transmitter at 4.3 GHz. Calculate its effective radiated power (ERP) and its beamwidth.
An RL circuit takes a current of 7A that lags behind the 231-volt source by 35 electrical degrees. Calculate the power factor, impedance, resistance and inductance of the circuit.
Design a filter with lower frequency cut-off: 10Hz, upper frequency cut-off: 2KHz, gain of 5, and an input resistance greater than 5kOhms.
Design a logic circuit to control electrical power to the engine ignition of a speed boat. Logic output I is to becomehigh if ignition power is to be applied and is to remain lowotherwise. Gasoline fumes in the engine compartment present aserious ..
There are three gates. Each gate can be opened or closed depending on the three logic inputs: (a, b, c). Gate open logic=1, gate close= logic 0. Design a logic circuit so that no adjacent gates or outputs (x, y, z) are open at the same time.
A p-n junction is made by doping Silicon with donors and acceptors. The doping at the p side has a uniform density of NA, but the doping density at the n side is not uniform and changes linearly with the distance from the metallurigical junction.
Write a program that asks the user to enter the numbers from 1 to 16 (in any order) and then display the numbers in a 4 by 4 arrangement, followed by the sums of rows, columns and diagonals.
Analyze and design a boost converter - analytically determine and draw the expected current and voltage waveforms for each component in your circuit at both light and heavy load.
A tollgate (vending machine) controller accepts only nickels (5c), dimes (10c), and quarts (25c), and generates control signal to actuate the lever to open the tollgate (or dispense a chosen item in case of vending machine) once 35c or more are re..
The terminal on the right is the positive reference for a voltage called v y (the other terminal being the negative reference). If it takes 1 mJ of energy to push a single electron into the left terminal, determine the voltages vx and vy.
Calculate the tetrahedral bond angle, the angle between any pair of the four bonds in a diamond lattice. (Hint: represent the four bonds as vectors of equal length. What must the sum of the four vectors equal
Two wires - A and B - with circular cross-sections have identical lengths and are made of the same material. Yet, wire A has four times the resistance of wire B. How many times greater is the diameter of wire B than wire A
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