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Multimedia equipment emission standard CISPR32 requires the use of a free-space antenna factor in radiated emission measurement of equipment under test (EUT). The calibration method for antennas to be used in radiated emission measurement is stipulated in CISPR16-1-6 and ANSI C63.5. In ANSI C63.5, because antennas used in a frequency range of 30 MHz to 1 GHz are susceptible to vertical polarization...
According to the standard method for calibration of receive antennas to be used in radiated emission measurement below 1 GHz, the sensitivity of receive antenna is defined as a free-space antenna factor obtained by applying a given correction factor to a near free-space factor that is determined by horizontally polarized antenna calibration at a 2 m antenna height. In actual radiated emission measurement...
In radiated emission measurement below 1 GHz, it is a common practice to use broadband antennas such as biconical antennas and LPD antennas. Another practice is to use hybrid antennas because they do not require replacement of the antenna throughout the frequency range below 1 GHz. While the use of a hybrid antenna at a 10 m distance is viewed as a viable option, its use at a 3 m distance is sometimes...
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