oth ends It is important to realise that if the line velocity and of a transmission line, i.e. both at the sending end and the receiving end; otherwise any signal reflected from the line attenuation of all the component sinusoids which make up a pulse waveform are not identical then de- receiving end and travelling back towards the sending end terioration in pulse waveform shape will occur. Pulse will be re-reflected again down the line to cause further distortion is particularly critical in high speed data reflections. The sending end can be properly terminated transmission where a series of distorted pulses can either by using a source generator with an impedance equal to the characteristic impedance of the line or by easily merge into one another and cause pulse detection using a matching network to make a source generator errors. If distortion occurs and if it is desired to know how present a matched impedance to the transmission line. and why a particular waveform has changed its shape, it will be necessary to examine the propagation of the 2.2.11 Reflection transmission constituent sinusoids of the waveform itself and to in- coefficients and VSWR stigate methods, such as frequency and phase equal- isation, to ensure minimal waveform change during signal propagation through the line. 2.2.11.1 Introduction Reflection coefficients are based on concepts introduced in 2.2.10 Transmission lines of finite your childhood. Consider the case when you throw a ball at a vertical stone wall. The ball with its incident power will length travel towards the wall, hit the wall which will absorb some of its incident power and then the remaining power 2.2.10.1 Introduction (reflected power) will cause the ball to bounce back. The ratio (reflected power)/(incident power) is called In Section 2.2.8.1, we discussed waveforms travelling the reflection coefficient. The reflection coefficient is down infinitely long lines. In practice, infinitely long lines frequently represented by the Greek letter gamma (T). do not exist but fini