A.H. Systems Model SAS-551 Passive Monopole Antenna
©
A.H. Systems inc.
– REV E
9
CALCULATIONS
EMISSIONS TESTING
Individual calibration data for the passive monopole antenna is supplied to
comply with various emissions test requirements. For emissions measurements,
add antenna factor plus cable loss to receiver reading in dB
V to convert to field
strength in dB
V/meter.
Field Strength(dBuV/m) = SA(dBuV) + AF(dB/m) + cable loss (dB)
SA = Spectrum Analyzer or Receiver voltage reading
AF = Antenna Correction Factor
CL = Cable Loss in dB
IMMUNITY TESTING
For Immunity measurements, the generated electric field strength can be
calculated by:
FS = Approximate Field Strength in (V/m)
P = Power in watts
g = Numeric Gain
d = Distance in meters
