The magnetic field of a TEM plane wave in air can be written H = Ho exp j(2nft-Bx) â. Am-¹ Use one of Maxwell's equations to derive a similar expression for E. Also sketch the orientations of H, electric field E and power flux at any instant relative to the x,y,z-axes. Explain what is meant by the Poynting vector S=EXH, calculate S for the wave of Q3(a)(i) and write down its time averaged magnitude.
The magnetic field of a TEM plane wave in air can be written H = Ho exp j(2nft-Bx) â. Am-¹ Use one of Maxwell's equations to derive a similar expression for E. Also sketch the orientations of H, electric field E and power flux at any instant relative to the x,y,z-axes. Explain what is meant by the Poynting vector S=EXH, calculate S for the wave of Q3(a)(i) and write down its time averaged magnitude.
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