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Explore characteristic impedance, wave equations, wave reflection, and termination concepts in telecommunication systems. Learn about standing waves, VSWR, impedance matching, and pulse propagation for a deeper understanding of signal transmission.
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z-z z z+z Telegraphist's equations
w d D z strip line
z-z z z+z Wave equation
z-z z z+z Wave equation k is the wave number
z-z z z+z Wave equation
z-z z z+z Wave equation current wave
z-z z z+z characteristic impedance
z-z z z+z characteristic impedance
w d D z strip line
w d D z strip line
D z a b coaxial cable
a = 3 mm b = 6 mm coaxial cable
D D z a twin lead
w d D z D z a b D D z a summary
w d D z D z a b D D z a summary
terminations standing wave VSWR
-z Help! terminations Zc ZL z = 0 Why?
-z Zc ZL z = 0 terminations
-z Zc ZL z = 0 terminations normalized impedance
-z Zc ZL z = 0 reflection coefficient
-z Zc ZL z = 0 reflection coefficient 3 special cases "short" "matched" "open"
-z Zc ZL z = 0 Incident plus reflected waves. Incident plus reflected waves. reflection coefficient
standing wave R = +1 R = -1 -z z = 0
Let us examine other values of the reflection coefficient.
probe w narrow slit d D z
D z a probe narrow slit b
2 1.5 1 Minimum deflection Maximum deflection Zc ZL z = 0 -z
l 1 + |R| 1 - |R|
-z Zc ZL z = 0 Incident plus reflected waves. Incident plus reflected waves. reflection coefficient
-z Zc ZL z = 0 impedance along the line
-z Zc ZL z = 0 impedance along the line
-z Zc ZL z = 0 impedance along the line
-z Zc ZL z = 0 impedance along the line
-z Zc ZL z = 0 impedance along the line
-z Zc ZL z = 0 impedance along the line Look at a distance z = - L toward the generator
-z Zc ZL z = 0 impedance along the line impedance is periodic every half-wavelength
-z Zc ZL z = 0 impedance along the line quarter wavelength Z <==> Y short ==> open open ==> short
-z quarter wave transformer Zc1 Zc2 ZL z = 0 matching frequency sensitive
-z Zc ZL z = 0 shorted line open line all values of reactance
L X = Zc tan kL
Should I add something in series or in parallel?