In the circuit design can be exposed to a variety of occasions this term transmission line . Obviously , the transmission line is one of the elements which emphasis on the signal integrity analysis , and many analysts are built on this basis . This article will discuss matter plaster base transmission line.
So, what is the transmission line? Engineering applications encountered in metal wires , waveguides, coaxial and PCB traces are Zou Xuan Chuan Weng line. Transmission line is generally defined as an electric power suitable for the efficient transmission system or the electrical signal transmission between two bamboo or more terminals . The two wire transmission line is called a signal path , the other one called the current return path , as shown in FIG .
Figure transmission line
Signal transmission line behavior is like? Be similar analogy: electrical transmission system in the transmission line passing through the water , like a long square tube , and the wave form of the flow through the tube , but also in the form of an electric signal wave transmitted along the transmission line . Further , the water - for a given length of the tube will take some time , the electrical signal is transmitted to spend some time along the transmission line . Further, the height of water in the tube as the transmission line voltage , and the magnitude of the current can be likened to the flow of water .
Many types of transmission lines , like the axis of the waveguide , stripline and microstrip lines, this chapter describes issues related to PCB transmission line for its model of high-speed circuit analysis.
