Design and Experimental Verification of Electric Near Field Probe

In this paper, the design of a near-field electric field probe utilizes aT-shaped receiver for signal coupling. Leveraging the advantages of a non-contact measurement architecture, the probe is developed to achieve high sensitivity, high spatial resolution, and wide bandwidth. The study focuses on designing an electric field probe fabricated on a PCB to meet market demands by improving existing probe designs. However, due to the trade-off between sensitivity and spatial resolution, this study aims to balance these two performance metrics. Ultimately, the bandwidth of the designed probe ranges from 300 kHz to 6 GHz, with a spatial resolution of 1.45 mm and a sensitivity of -35 dB at 5 GHz.