학술논문
A PCB Based High Resistance GHz Bandwidth Voltage Pick Up for Detecting Switching Voltage
Document Type
Conference
Source
2023 International Symposium on Electromagnetic Compatibility – EMC Europe Electromagnetic Compatibility – EMC Europe, 2023 International Symposium on. :1-6 Sep, 2023
Subject
Language
ISSN
2325-0364
Abstract
The sub-nanosecond switching of GaN transistors at high voltages challenges existing methods of transient voltage measurement. A novel printed circuit board based implementation of a capacitively compensated resistive divider is presented in this paper. The geometry balances capacitive coupling to the high voltage side with capacitive coupling to ground and longitudinal capacitances along the resistors by symmetry. Using five 2 watt resistors a 3 GHz bandwidth is achieved at 5 KOhm. An equivalent circuit derived from the geometry and the full-wave model are validated by measurements.