"In electrical engineering, a transmission line is a specialized cable or other structure designed to conduct electromagnetic waves in a contained manner."
The study of the behavior of waves that propagate along transmission lines, including their reflection and transmission characteristics.
The basics of transmission line theory: This covers the fundamental concepts and terminology used in the study of transmission lines, including impedance, capacitance, inductance, and propagation delay.
Types of transmission lines: This covers the different types of transmission lines, such as coaxial cables, twisted pair cables, and waveguides.
Wave propagation: This covers how electromagnetic waves propagate along transmission lines, including the differences between conductive and dielectric media.
Signal distortion: This covers the various factors that can cause signal distortion along transmission lines, including attenuation, reflection, and dispersion.
Smith charts: This covers the use of Smith charts in the analysis and design of transmission lines, including how to use them to determine impedance matching and transmission line characteristics.
Impedance matching: This covers the techniques used to match the impedance of a transmission line to the source and load impedances to minimize signal reflection and distortion.
Reflection coefficient: This covers the concept of the reflection coefficient and how it is used to analyze transmission lines and antenna systems.
Transmission line equations: This covers the transmission line equations, which describe the behavior of signals along transmission lines and are used in the analysis and design of transmission lines.
Distributed circuit theory: This covers the use of distributed circuit theory to model and analyze transmission lines as a distributed network of resistors, capacitors, and inductors.
Electromagnetic field theory: This covers the basic principles of electromagnetic field theory and its application to transmission line analysis and design.
Termination and matching networks: This covers the design and implementation of termination and matching networks to minimize signal reflection and distortion.
Transmission line measurement techniques: This covers the various techniques used to measure the impedance, attenuation, and distortion of transmission lines.
Transmission line protection: This covers the use of protective devices such as surge suppressors and lightning arresters to protect transmission lines from damage due to voltage surges and lightning strikes.
Microwave transmission lines: This covers the special considerations involved in the analysis and design of microwave transmission lines, including the use of waveguide structures and the effects of higher frequencies on signal propagation.
Coaxial Cable Transmission Line Theory: It consists of two concentric conductors separated by dielectric material. It is used in cable TV, broadband internet, and CCTV systems.
Twisted Pair Transmission Line Theory: It is made up of two insulated copper wires twisted around each other. It is commonly used for telephone and Ethernet connections.
Waveguide Transmission Line Theory: It uses hollow waveguides to transmit signals with high-frequency ranges. It is preferred for high-power microwave applications.
Microstrip Transmission Line Theory: It utilizes a flat conductor strip separated from a ground plane by a dielectric material. It is used for high-frequency electronic circuits and antennas.
Stripline Transmission Line Theory: It is a grounded conductor strip placed between two dielectric layers. It is used for high-frequency circuits as it provides good isolation and signal integrity.
Coplanar Waveguide Transmission Line Theory: It consists of a central conductor strip flanked by two ground planes. It provides low signal loss and crosstalk.
Parallel Plate Transmission Line Theory: It has two parallel conductors, and is used in microwave circuitry.
"The term applies when the conductors are long enough that the wave nature of the transmission must be taken into account."
"This applies especially to radio-frequency engineering because the short wavelengths mean that wave phenomena arise over very short distances."
"The theory of transmission lines was historically developed to explain phenomena on very long telegraph lines, especially submarine telegraph cables."
"Transmission lines are used for purposes such as connecting radio transmitters and receivers with their antennas, distributing cable television signals, trunklines routing calls between telephone switching centers, computer network connections, and high-speed computer data buses."
"RF engineers commonly use short pieces of transmission line, usually in the form of printed planar transmission lines, arranged in certain patterns to build circuits such as filters."
"These circuits, known as distributed-element circuits, are an alternative to traditional circuits using discrete capacitors and inductors."