Unformatted text preview: EERF 6311 Fall 2010, Design Project #1, Impedance Matching — Due Wednesday Oct. 13, 2010 1. For‘the source (a) and load conﬁgurations (b) shown below, design a lowpass impedance
matching network at f = lGHz. Show calculations only. 1009 3 nH
(E) 115 pF % 1000 Q
T (a) - (b) 2. Design a L matching network to match a 100 S2 source to a 1700 Q load at 900 MHZ. Assume that a DC voltage must also be transferred from the source to the load. Provide the
values for the passive elements. Show calculations only. 3. (a) Using ideal lumped-element components, design a 2-element matching network to match a
100-9 source (port 1) to a load impedance, ZL = 50+j15 £2 at 1 GHz. Obtain two solutions. (b) Convert to the appropriate L and C values at 1 GHz simulate your results. This will be a 1-
port circuit where you change your load impedance from 50 £2 to 50 +le Q and include ideal L and C values for the matching networks. Plot the magnitude of S“ (in dB) from 0.5 to 2 GHz. 4. A 100 Q transmission line is connected to an antenna with load impedance ZL = (50 ——j 100) 9.
Find the position and length of the shunt short—circuited and open-circuited stub required to
match the line. Show calculations only. 5. Design a microstrip impedance matching network using a single shunt—stub tuner with an
open— or short—circuited stub to match 75 £2 to a load impedance of 100 + 3'80 9. Simulate your
results and plot the magnitude of S11 in dB over the frequency range of 8 to 12 GHz. Use center frequency f0 = 10 GHz
Port impedances = 75 9.
Substrate a, = 12 Substrate thickness = 0.381 mm
Conductor thickness = Au metal is 10 um ...
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- Fall '08