A novel impedance adapter for the time‐domain electromagnetic pulse standard field generation setup

Abstract

The purpose of the work is to design a novel impedance adapter to set up a mono-cone standard field generation system with a large clear time and a large dynamic range. To transform the impedance from 50 Ω (the output impedance of the signal generator) to 75 Ω (the input impedance of the cone), the gradient structures with 11 sections are designed for the impedance adapter. The measured VSWR of the system is below 1.5 from 300 to 2.25 GHz. The insertion loss of the designed is about −35 dB. The system with the designed impedance adapter works well. This is validated by the results of the standard open-air test site in National Institute of Metrology, China. K E Y W O R D S75 Ω, impedance adapter, mono-cone, OTAS, time-domain electromagnetic pulse, traceability