TekBox TBLLA-2M 9 KHz – 30 MHz Large Loop Antenna

The TBLLA-2M is a large loop antenna (LLA) with three orthogonal loops, as required by CISPR 16 -1-4 and CISPR 15 / EN 55015.

The LLA is used to measure the current induced by the magnetic field emitted by luminaries. Section 4.4 of EN 55015 specifies the test setup and measuring procedures.

The TBLLA-2M consists of three perpendicular 2-meter diameter loop antennas on three orthogonal planes (X/Y/Z), set on lightweight hollow WPC frames with a total height of 2.5m. The loops lowest point is 0.5m above ground. Each loop element receives magnetic field radiation normal to the containing plane and generates a voltage signal proportionate to the strength of the H -field radiation at the output port of the RF transducer connected to the loop.

The TBLLA-2M is equipped with three TekBox TBCCP1-2K70 coaxial RF current monitoring probes (transducers), with a flat transfer impedance of 0 dBΩ (1V/A) from 9 kHz to 30 MHz when loaded with 50Ω. The kit comprises all required coaxial cables, ferrite clamps, a manual RF coaxial switch to select loops, and a TBTP3 tripod with a plastic DUT support plate.

A calibration dipole with support structure is available as optional accessory.