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Unformatted text preview: NAME: Milk 1. yaaudalw ID: [06/80 606 TRANSMISSION LINES AND ELECTROMAGNETICS  ESE319 TEST 1: October 15, 2009
Time: 9:50 am to 11:10 am ANSWER ALL QUESTIONS
(All Questions Carry Equal Marks) Closed Book Name: PROBLEM 1 : a) Show that an open circuit, lossless transmission can be used to synthesize reactive components. b) Using a lossless transmission line with a characteristic impedance of 60 Q, synthesize a 1 pH inductor for
use at a frequency of 'l’ 0 1M “1,. c) At what frequency will the reactance of the TL in part (b) become capacitive? ﬂ) ZSC’ :: Z, 145F a Show! QTWr'ﬁL’ ZLi‘Q, 'Zo 4*sz a“ 0C, Name: PROBLEM 2: . . . z 3 0
Cons1der a power splmer Illustrated here. Two loads RL1 0 ‘9'
RL1=300 Q and RL2=200 Q are fed, in phase, from a loss
less transmission line with 20:100 Q. If the Ru receives
twice the power of Ru find the values of 201 and 202.
RLZ 2 29041
/ Name: PROBLEM 3: A lossless 150 Q transmission line has a load reﬂection coefﬁcient of F = 0.6ejmo . Use the Smith chart to
ﬁnd the following: a) The load impedance;
b) Voltage standing wave ratio; c) Input admittance for a TL with a length of 0.30).; d) Shortest transmission length for which the input impedance is purely reactive;
e) Position of the ﬁrst voltage minimum from the load.
a» Z 2.
L— : __——— H“) p— r \
< . Z; 2‘, — 12°  (. % +JIH30'5—D)
ZL : .i + J in Lf' , (alZVSWR: M “‘72, k5”) ﬂ.k"For TL .30} Z”; I; fowl Ot'i 30x 150
 wort! “Fae ’Oﬁm a
3:33; i '30) : 6333i $ﬁl33k
AVKI I Z ‘L‘ l \ — —_r—‘ (
:sa gm , /»~ g,“ 2:) Name: . . The Complete Smith Chart Black Magic Design m
m
w
m
m ‘3 H 'I 'IS I] In 1.4 I} I.) L. It I] I IN I‘ 0]
I) 1.‘ I) u I.'I1J1.I I H ol .3 I
.l‘lllﬂﬂ“ I! I} IN IIJOJOJ ll” M u 0101110 0.1 01 0]
1 II II 11 Name: . . . . . . .. PROBLEM 4: sum. Cou Tutm Linn 10 —T—‘__—_"—_——_4 'ig‘ The ﬁgure shows the variation of the voltage
measured along a lossless slotted transmission line with a characteristic impedance of 100 9.
Use the ﬁgure to determine the load impedance. 20 '~ Irma Find ZL > 9
v; Q W */ Name: PROBLEM 5: An airﬁlled two conductor transmission line with 20 = 50 Q, L = 900 m is terminated with a resistive
load ZL = 150 (2. At t = 0 the input of the TL is connected to a 12 V DC source with an internal
impedance 25 = 25 (2. Plot the current waveform at the load for 0 < t <I8 us. 23:23:11 ./_
Off C, r E“
y L: ?oom { " 3X/ﬁ%
{353/43 ...
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This note was uploaded on 02/24/2010 for the course ESE 319 taught by Professor Dhadwal during the Fall '08 term at SUNY Stony Brook.
 Fall '08
 DHADWAL

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