• Frequency range: 30kHz to 400MHz
• Transfer impedance: -7 dB Ohm with a 3 dB bandwidth from 5 MHz to 300 MHz
• Suppression of orthogonal field: typ. > 15 dB avg. up to 100 MHz
• Max. primary current (RF): 12A

The TekBox TBSCP1-5M300 is an RF surface current monitoring probe designed to measure RF currents flowing on surfaces such as PCB ground planes or traces, metal planes, or wires. The probe has a very flat response from 5 MHz to 300 MHz and is characterized over the frequency range from 30kHz to 400MHz. The footprint of the RF current monitoring probe measures 40mm x 15mm. The transfer impedance is -7 dB Ohm with a typical 3dB bandwidth from 5MHz to 300MHz.

Place the probe on top of a 50 Ohm microstrip line, terminated with 50 Ohm. Connect the microstrip line to port 1 of a VNA and connect port 2 to the SMA connector of the probe. Measure S21 and add 34 dB to get the trans-impedance in dB Ohm.