Antenna calibration on a 3-m OATS: Using an inaccurately calibrated antenna can result in the erroneous rejection of a satisfactory test article

摘要

RADIATED EMISSION MEASUREMENTS of commercial products are usually performed on an open area test site (OATS). Test instrumentation and antennas are used to obtain the radiated emission data. The measurement error accumulated by each of the instruments, sensors, and OATS used in the measurement may create doubts as to the validity of observed data. The antenna is often one of the most common sources of error in radiated emission testing. Using an inaccurately calibrated antenna can result in the erroneous rejection of a satisfactory test article. Likewise, it can also lead to mistaken acceptance of an unsatisfactory test article - a decidedly undesirable situation.