Picosecond high-voltage pulse measurements

Area of Science:

• Electrical Engineering
• Physics

Background:

• High-voltage pulse measurements require precise and high-bandwidth instrumentation.
• Existing attenuators can limit measurement accuracy and speed.

Purpose of the Study:

• To introduce novel capacitive sensors and directional couplers for high-voltage pulse measurement.
• To enhance the bandwidth and reduce transient time in measurement circuits.

Main Methods:

• Development of capacitive sensors utilizing oxide dielectric substrates.
• Integration of trough directional couplers for signal attenuation.
• Analysis of wave processes for operational mode optimization.

Main Results:

• Capacitive sensors achieve high attenuation factors (up to 30 × 10³).
• Achieved transient time of approximately 38 ps for both sensors and couplers.
• Demonstrated successful recording of high-voltage pulses from nanoseconds to picoseconds.
• Utilized sensors as receiving antennas for GHz radio pulses.

Conclusions:

• The developed sensors and couplers significantly improve measurement circuit parameters.
• These components enable more accurate and faster high-voltage pulse analysis.
• Proposed calibration methods enhance the reliability of attenuation factor calculations.