# Solved Problems-1

Problem-1

Determine the maximum number of half cycles of electric field with which it may propagate in a waveguide with a wall separation of 5 cm at a frequency of 10 GHz. Calculate the guide wavelength for this mode of propagation.

Solution

Here, we have to find the largest value of
Free-space wavelength,
For
For
For
For
Hence, the maximum value of
Guide wavelength for

*n*for which the cut-off wavelength is greater than the free-space cut-off wavelength.*n*= 1, cut-off wavelength,*n*= 2, cut-off wavelength,*n*= 3, cut-off wavelength,*n*= 4, cut-off wavelength,*n*is, .*n*= 3, is,