ETS-Lindgren 3160 Pyramidal Standard Gain Antenna - Manual (Page 39)

www.ets-lindgren.com Typical Data 39
Calculated Far Field Gain
The gain of a pyramidal horn (linear gain, not dB) is calculated as follows:
[ ( ) ( )]
[( ( ) ( )) ( ( ) ( )) ]
Where
√
(
√
√
)
And
√
(
√
√
)
Finally
√
And C(x) and S(x) are the Fresnel Cosine Integral and the Fresnel Sine Integral
functions.