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An air-filled waveguide has a cross-section which is 50 mm wide by 40 mm high. Find...

An air-filled waveguide has a cross-section which is 50 mm wide by 40 mm high. Find (a)
the modes (both TE and TM) which this guide will transmit with ? > 37.5mm and (b) the
relative phase velocity (v/c) in the guide for each of the modes passed if ? = 0.6 ?C.

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