In the previous chapter, we discussed TE and TM modes of electromagnetic propagations in a rectangular waveguide, and a TEM mode in a coaxial cable. In a waveguide, axial components of E or H vectors behave like scalar variables of the phase of propagation, and in a coaxial cable the uniaxial vector potential A plays such a role as a scalar variable. Thus, transversal fields depend on the type of waveguide; on the other hand, the axial component plays essential role for propagation.
KeywordsWaveguide Mode Axial Component Rectangular Waveguide Coaxial Cable Principal Mode
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