# Differences

This shows you the differences between two versions of the page.

 notes:parabolic_reflection [2012/12/10 15:16]Sean Madden notes:parabolic_reflection [2017/02/05 22:43] (current) Both sides previous revision Previous revision 2012/12/10 15:16 Sean Madden 2012/12/10 15:16 Sean Madden 2012/12/10 15:15 Sean Madden 2012/12/10 14:52 Sean Madden 2012/12/10 14:52 Sean Madden 2012/12/10 14:51 Sean Madden 2012/12/10 14:49 Sean Madden created Next revision Previous revision 2012/12/10 15:16 Sean Madden 2012/12/10 15:16 Sean Madden 2012/12/10 15:15 Sean Madden 2012/12/10 14:52 Sean Madden 2012/12/10 14:52 Sean Madden 2012/12/10 14:51 Sean Madden 2012/12/10 14:49 Sean Madden created Line 31: Line 31: To convert that into dB [[wp>Isotropic_antenna|isotropic]], $dbI = 10*log(power)$ To convert that into dB [[wp>Isotropic_antenna|isotropic]], $dbI = 10*log(power)$ - $G_dbI = 10 * log_{10}(501.4849) = 27.002 dbI$ gain + $G_{dbI} = 10 * log_{10}(501.4849) = 27.002 dbI$ gain - $G_dbI = 10 * log_{10}(638.2535) = 28.049 dbI$ gain + $G_{dbI} = 10 * log_{10}(638.2535) = 28.049 dbI$ gain with a beamwidth of with a beamwidth of Line 47: Line 47: $G = \frac{\pi^2 * 3.345241m^2}{0.0008151025m^2}*.70 = 28353.9109$ times mag $G = \frac{\pi^2 * 3.345241m^2}{0.0008151025m^2}*.70 = 28353.9109$ times mag - To convert that into dB [[wp>Isotropic_antenna|isotropic]], $dbI = 10*log(power)$ + $G_{dbI} = 10 * log_{10}(22278.0729) = 42.478 dbI$ gain - $G_dbI = 10 * log_{10}(22278.0729) = 42.478 dbI$ gain + $G_{dbI} = 10 * log_{10}(28353.9109) = 44.526 dbI$ gain - + - $G_dbI = 10 * log_{10}(28353.9109) = 44.526 dbI$ gain + with a beamwidth of with a beamwidth of $\theta = \frac{70 * 0.02855}{1.829m} = 1.0926°$ $\theta = \frac{70 * 0.02855}{1.829m} = 1.0926°$ 