The Keysight 11966A active loop antenna was designed specifically for three-meter VDE 0871 Limit B magnetic-emissions testing. A built-in preamplifier in the antenna base matches the low impedance of the loop with the 50 ohm input of the EMI receiver and provides a consistent, linear antenna factor over the frequency range of the antenna. A built-in saturation indicator alerts the operator of overload conditions.
The 11966A can be purchased directly from ETS-Lindgren.
