High-Voltage Pulse Attenuator Self-Correction via Capacitive Divider
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Solution Overview
Problem
Conventional high-voltage wideband pulse attenuators face a trade-off between impedance matching and insulation performance, struggling to simultaneously maintain frequency characteristics and prevent insulation breakdown, and require external test devices for measuring resistance unit characteristics.
Innovation Solution
A high-voltage wideband pulse attenuator with a T-shaped resistive attenuation circuit and a capacitive divider unit, integrated in a coaxial structure, allowing for self-measurement of attenuation values and real-time monitoring without external assistance, ensuring impedance matching and insulation integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interval between electrodes of the resistance unit is increased to prevent insulation breakdown, then insulation performance is improved, but the frequency characteristic of the attenuator deteriorates
Solution Approach 1:
The resistance unit is divided into multiple segments with electrode intervals optimized for different frequency ranges. This segmentation allows each segment to contribute to both insulation performance and frequency characteristics, resolving the trade-off between these two requirements.
Solution Approach 2:
Different regions of the attenuator employ different electrode spacing configurations. The local electrode interval is adjusted according to the specific functional requirements of each section, enabling simultaneous achievement of insulation breakdown prevention and frequency characteristic maintenance.
2Power
If the resistance unit is exposed to high energy for attenuating high-voltage wideband pulse signals, then attenuation capability is improved, but the resistance unit properties may change causing measurement inaccuracy
Solution Approach 1:
The capacitive divider unit provides real-time feedback on the attenuation value by measuring the voltage across the resistance unit. This feedback mechanism enables continuous monitoring and correction of attenuation value drift caused by high energy exposure, ensuring measurement accuracy is maintained.
Solution Approach 2:
The attenuator performs self-diagnosis and self-correction of attenuation values using the capacitive divider unit. The system automatically detects changes in resistance unit properties and compensates for them without requiring external test devices, maintaining measurement precision under high power conditions.
3Measurement precision
If conventional measurement methods are used to examine resistance unit characteristics, then measurement capability is achieved, but external test assisting devices and cables are required making the process inconvenient
Solution Approach 1:
The capacitive divider unit is integrated directly into the attenuator structure, merging the measurement function with the attenuation function. This integration eliminates the need for external test assisting devices and cables, making the measurement process convenient while maintaining measurement capability.
Solution Approach 2:
The capacitive divider unit serves multiple functions: it provides real-time attenuation value monitoring, enables resistance unit characteristic examination, and supports self-diagnosis capabilities. This multi-functionality consolidates multiple measurement tasks into a single integrated component, improving ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The attenuator effectively measures and maintains performance without external devices, preventing insulation breakdown and ensuring accurate frequency characteristics, enabling real-time monitoring and self-assessment of attenuation.
Implementation Method 1
a capacitive divider unit for dividing a pulse signal
Implementation Method 2
a T-shaped resistive attenuation circuit for attenuating the pulse signal
Data Source
AI summary
Provided is a high voltage wideband pulse attenuator having an attenuation value self-correction function. The high voltage wideband pulse attenuator includes an input unit for receiving a pulse signal, a T-shaped attenuator circuit for attenuating the pulse signal, an output unit for outputting the pulse signal attenuated by the attenuator circuit, and a capacitive divider circuit for dividing a voltage of the pulse signal input through the input unit or the pulse signal attenuated by the attenuator circuit. Using the capacitive divider circuit, the high voltage wideband pulse attenuator can easily measure an error of an attenuation value caused by a change in the resistance of T-shaped array resistor units in a process of attenuating an input pulse signal of tens of kV or more. In particular, the pulse attenuator can measure its performance by itself without test assisting devices, and check a state of an attenuated pulse in real-time.