[align=justify:2303daa709] If I am designing a horn antenna thanwhat is the wavelength in the waveguide. Is it a free space wavelength or do we have to calculate the wavelength in the waveguide, since horn is an open waveguide, dont you think we will consider free space wavelength in the waveguide. Please reply me as early as possible.[/align:2303daa709]
Thanks
All wavelength specifications of horn antennas are considered to be wl. in free space. The approximation of horn as open waveguide works only for long small-angle horns. The waves in the horn don't describes by harmonic (complex exponent) function, usually it's a special functions like Bessel (sectorial horn) or Hankel (pyramidal horn). This should be takes into account in wide-angle horn design.