Question: An air-filled rectangular waveguide operates at 40 GHz. If the cutoff frequency of the TE 12 mode is 25 GHz, calculate the wavelength, phase constant,

An air-filled rectangular waveguide operates at 40 GHz. If the cutoff frequency of the TE₁₂ mode is 25 GHz, calculate the wavelength, phase constant, phase velocity, and intrinsic impedance of this mode.

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