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5.0 Application
Each Model 3106B Double-Ridged Waveguide Horn is individually calibrated
during the manufacturing process. Using the three-antenna method of calibration
per specification ARP-958, apparent gain at 1.0 meters from the end of the
antenna is determined and used to check conformance to the antenna
factor (AF).
The antenna factor should be used in specification compliance testing to convert
receiver reading (dBuV) to field intensity units (dBuV/m). The conversion is
accomplished by adding the antenna factor in dB to the receiver reading in dB
above 1 microvolt. To produce specific field strengths at 1-m spacings, use the
following equation:
(
)
V / m =
E
d
= distance, in meters
G[dB]/10
g
= numeric gain (10
)
P
= antenna net input power, in watts
Application
30
Pg
d
|
19
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