1 For a rectangular aperture with a uniform field distribution situated in a ground plane, find the half-power beamwidths, first-null beamwidths, maximum directivity, and maximum effective aperture....

1 For a rectangular aperture with a uniform field distribution situated in a ground plane, find the half-power beamwidths, first-null beamwidths, maximum directivity, and maximum effective aperture. The aperture dimensions are 0:03 _ 0:1 m and the operating frequency is 1 GHz.

2 Determine the maximum directivity and maximum effective aperture for a rectangular aperture with a TE10 field distribution situated in a ground plane. The aperture dimensions are 0:07 _ 0:2 m and the operating frequency is 10 GHz.

3. Calculate the half-power beamwidths, first-null beamwidths and maximum directivity for a circular aperture with a uniform field distribution in a ground plane. The aperture radius is 0:15 m and the operating frequency is 2 GHz.