robismyname
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Is there a formula that related the 3dB beam width of a 1/2 wave dipole antenna with the gain of the antenna?
Since the a narrower beam on a E field radiation represents more directivity, more gain. I was hoping there is a convenient formula where if you determine the 3db beam width from a antenna directivity plot you can determine a good estimate of the antenna gain.
ARRL Antenna book has a formula:
41253
G = -----------------------------------------------
H(3dB beam width) * E(3dB beam width)
but I dont hink it works for 1/2 wavelength dipole antennas
Since the a narrower beam on a E field radiation represents more directivity, more gain. I was hoping there is a convenient formula where if you determine the 3db beam width from a antenna directivity plot you can determine a good estimate of the antenna gain.
ARRL Antenna book has a formula:
41253
G = -----------------------------------------------
H(3dB beam width) * E(3dB beam width)
but I dont hink it works for 1/2 wavelength dipole antennas