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Transmissionline Final Project

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Engineering
School
Morgan State University
Type
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TRANSMISSION LINES
Institution Name:
Students Name:
Professor’s name:

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1. TITLE
A LAB REPORT ON TRANSMISSION LINES
2. INTRODUCTION
A transmission line is a special structure through which electromagnetic waves travel. It is a
two-port circuit used to connect a generator or a transmitter signal to a receiving load over a
distance.
2.1 Applications of transmission lines
Analog applications
Connecting radio transmitters and receivers with their antennas
Distributing cable television signals
Used in power transmission lines
Digital applications
Traces on printed circuit board
Traces on multi-chip modules
Traces on integrated circuit packages
2.2 Distributed versus Lumped analysis
In lumped analysis, the physical dimensions such as voltage across and current through
conductors connecting the elements does not vary whereas in distributed analysis the current
along the conductors and elements vary and the voltage across conductors and element varies.
2.3 Why distributed analysis is needed in transmission lines
Distributed analysis is needed to overcome the effect of transit time or causality, or size
effect. Also at high frequencies, we need distributed analysis since the circuit element cannot
be defined for the whole transmission line.
3. THEORY
The Lumped model of a transmission line is used to calculate characteristic impedance, phase
velocity, and both parts of the propagation constant (phase and attenuation. The model uses
infinite small section of the TL as sown below
For a lossless transmission line, the lumped model reduces to

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TRANSMISSION LINES Institution Name: Students Name: Professor’s name: 1. TITLE A LAB REPORT ON TRANSMISSION LINES 2. INTRODUCTION A transmission line is a special structure through which electromagnetic waves travel. It is a two-port circuit used to connect a generator or a transmitter signal to a receiving load over a distance. 2.1 Applications of transmission lines Analog applications Connecting radio transmitters and receivers with their antennas Distributing cable television signals Used in power transmission lines Digital applications Traces on printed circuit board Traces on multi-chip modules Traces on integrated circuit packages 2.2 Distributed versus Lumped analysis In lumped analysis, the physical dimensions such as voltage across and current through conductors connecting the elements does not vary whereas in distributed analysis the current along the conductors and elements vary and the voltage across conductors and element varies. 2.3 Why distributed analysis is needed in transmission lines Distributed analysis is needed to overcome the effect of transit time or causality, or size effect. Also at high frequencies, we need distributed analysis since the circuit element cannot be defined for the whole transmission line. 3. THEORY The Lumped model of a transmission line is used to calculate characteristic impedance, phase velocity, and both parts of the propagation constant (phase and attenuation. The model uses infinite small section of the TL as sown below Fo ...
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