Show from general considerations that the attenuation of power in the rectangular waveguide (TE10 mode propagating in z-direction) is:
where k'' is the imaginary part of the wavevector in the phasor exp(j(wt-kz))
power is proportional to the square of the amplitude
The Attempt at a Solution
tried squaring the phasor and setting k=k'+k''j but did not get right answer.