TekBox TBRS101-RX 30 Hz – 100 KHz RS101 Loop Antenna

The MIL-STD-461G RS101 test determines the susceptibility of equipment installed in close proximity to large radiated magnetic fields, and their ability to withstand them in the frequency range 30 Hz –100 kHz.

The TBRS101 Loop Antenna Set consists of the TBRS101-TX Radiating Loop, TBRS101-RX Field Monitoring Loop and TBCCP1-2K70.

The TBRS101-TX Radiating Loop is used to generate the low frequency magnetic field emissions. The distance between the winding and EUT is 5 cm. This is accomplished when the front edge of the the radiating loop comes into contact with the EUT faces during testing. The test is applicable in the frequency range of 30 Hz to 100 KHz. Section 5.20 of MIL-STD-461G specifies the test setup and measuring procedures.

The TBRS101-TX Radiating Loop is constructed of a 12 cm diameter coil with 20 turns of 12 AWG Gauge (2 mm) copper wire. The loop winding has a DC resistance of 50 mohms. The loop generates magnetic field strength or magnetic flux density normal to the containing plane by applying RF current to the input banana plugs.

The TBRS101-RX Field Monitoring Loop consists of a 4.1 cm diameter coil with 51 turns of 7 strand 41 AWG Litz wire inside a shielded body. The DC resistance of the loop winding is 4.1 ohms. The loop receives magnetic field radiation normal to the containing plane 5cm from the TBRS101-TX Radiating Loop winding and produces a voltage signal proportional to the intensity of the B-field/H-field radiation at the loop’s output port.

A TekBox TBCCP1-2K70 coaxial RF current monitoring probe with a flat transfer impedance of 0 dBΩ (1V/A) from 9 kHz to 30 MHz when loaded with 50Ω is available as an optional accessory for calibration purposes.