A transmission line guides electromagnetic (EM) energy from one point (generator point) to another point (load point). A “wave-guide” has a similar function. However, wave guide fundamentally differs from a transmission line. Wave guides are special cases of transmission lines. Table 10.1 summarizes the distinction between transmission line and a wave guide.
Table 10.1 Comparison between a transmission line and wave guide
|Sl No.||Transmission Line||Wave Guide|
|It supports the transverse electromagnetic wave (TEM) only||It supports many possible configurations|
|Due to the “skin effect” and higher dielectric losses, especially in frequency range 3–300 GHz, the transmission line becomes inefficient ...|