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homework2 - impedance and propagation constant of the line?...

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ECE 107: Homework 2 1) Two parallel wires of radius 0.1mm a = and length 2cm separated by a distance 1mm d = connect two elements on the motherboard of a computer. The wires are assumed to be made of perfect electric conductors and reside in a lossless medium with permittivity 0 2 ε = and permeability 0 μ . a. Consider two signals: One of frequency 1 GHz and the other of frequency 20 GHz. Do we have to consider the two wires as a transmission line for the first signal? Do we have to consider the two wires as a transmission line for the second signal? b. In the case we have to consider the wires as a transmission line, what are the characteristic
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Unformatted text preview: impedance and propagation constant of the line? 2) Consider a coaxial transmission line with the outer conductor radius of 4 mm and inner conductor radius of 1 mm. a. Calculate the parameters ', ', ', ', , R L G C Z assuming that the conductors are perfect (lossless) and the space between them is filled with a dielectric material of 3 r = and 3 10 S m = . Assume the field has a wavelength of 5 cm. b. The line is terminated by a loading impedance 50 L Z = . Find the VSWR assuming that the dielectric material is characterized by 3 r = and = (i.e. that the line is lossless). 3) 4) 5) 6)...
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This note was uploaded on 06/30/2010 for the course ECE ECE 107 taught by Professor Ericfullerton during the Spring '07 term at UCSD.

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homework2 - impedance and propagation constant of the line?...

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