homework6

# homework6 - (b Let the microstrip substrate have a height h...

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EE4609 Homework #6 Spring 2009 1) (a) A driver generates a trapezoidal clock signal and sends it down an interconnect to a load. The equivalent circuit is shown below. V g R s = Z o R s = 9Z o Z o , β Z in l At the first harmonic of the clock signal, the line length is l = λ / 4. What is the impedance, Z in ( Ω ) seen by the driver at the line input? (b) What is Z in ( Ω ) at the clock signal’s second harmonic? (c) Based on the results above, what is Z in ( Ω ) at the odd harmonics? (d) Based on the results above, what is Z in ( Ω ) at the even harmonics?

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2) (a) The signal path for a microstrip interconnect is a rectangular shaped copper strip conductor of width W = 5 mils and thickness t = 0.7 mils. For copper, σ = 5.8e +07 S/m. Calculate and plot the interconnect resistance per unit length ( Ω /m) over the frequency range of dc to 10 GHz. Ignore the resistance of the ground plane.

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Unformatted text preview: (b) Let the microstrip substrate have a height h = 2 mils and a relative dielectric constant of ε r = 4.3. Use the low loss approximation to calculate the attenuation constant (Np/m) versus frequency from dc to 10 GHz. 3) (a) A two port circuit is characterized by its ABCD parameters. For the circuit below, calculate the input impedance, Z in, seen by the source. V g Z s Z L A B C D I 1 I 2 + V 1-+ V 2-Z in (b) Find V 2 in terms of V g , Z in , Z S and the ABCD parameters. 4) (a) A two port network is characterized by its scattering parameters. For the circuit below S 11 S 12 S 21 S 22 V 1 + V 2-V 1-V 2 + The reference impedance for the S-parameters is Z o . Calculate the load voltage, V 2 when Z L = Z o. (b)Calculate the load voltage, V 2 , when the load impedance is Z L ≠ Z o . Z L...
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## This note was uploaded on 04/21/2010 for the course EE 4609 taught by Professor Staff during the Spring '08 term at Minnesota.

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homework6 - (b Let the microstrip substrate have a height h...

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