Question: A rectangular, air-filled waveguide has dimensions a = 3.8 cm and b = 1.6 cm, and walls are made of copper. For the dominant mode

A rectangular, air-filled waveguide has dimensions a = 3.8 cm and b = 1.6 cm, and walls are made of copper. For the dominant mode at f = 10 GHz, calculate
(a) The group velocity
(b) The attenuation dB/m

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