Calibration Coupling Unit for Frequency Response Mismatch Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing calibration techniques for measurement equipment, such as vector signal generators and analyzers, are complex and provide limited calibration quality, failing to accurately reflect the DUT's frequency response due to inherent frequency response and mismatch issues.
Innovation Solution
A measurement application device calibration unit comprising a coupling element and signal processing device, which allows for a single calibration process to identify and correct inherent frequency response and mismatch by using a coupling element and signal processing device to generate or receive known calibration signals, determining calibration parameters without additional receivers or transmitters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing calibration techniques are used, then calibration can be performed, but the calibration quality is limited and the process is complex
Solution Approach 1:
The patent extracts the calibration functionality from complex multi-device setups and consolidates it into a single integrated calibration unit. This unit uses a coupling element to separate the calibration signal path from the measurement signal path, allowing calibration to be performed independently without affecting normal measurements, thereby simplifying the overall calibration process while maintaining high calibration quality
Solution Approach 2:
The calibration unit is designed with multi-functionality, serving both calibration and measurement purposes. The coupling element can dynamically switch between coupling calibration signals during calibration mode and coupling measurement signals during normal operation, eliminating the need for separate dedicated calibration equipment and reducing system complexity
2Measurement precision
If traditional calibration methods are used, then calibration can be performed, but additional receivers or transmitters are required increasing system complexity
Solution Approach 1:
The calibration unit leverages the existing receiver or transmitter in the measurement system to perform calibration functions. The coupling element directs calibration signals through the existing signal path, allowing the same hardware components to serve dual purposes: normal measurement operations and calibration operations, thereby achieving accurate frequency response correction without adding receivers or transmitters
Solution Approach 2:
The coupling element acts as an intermediary component that enables calibration signal injection or extraction without requiring additional transmitters or receivers. It provides a controlled path for calibration signals to interact with the measurement system's existing signal path, facilitating accurate calibration while minimizing additional hardware requirements
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure provides a measurement application device calibration unit, comprising at least one coupling element comprising a first connection and a second connection for coupling the coupling element into a signal measurement path that is coupled to a measurement application device, and a third connection, wherein the coupling element is configured to at least one of couple out a signal from the signal measurement path into the third connection, and couple in a signal from the third connection into the signal measurement path, and a signal processing device that is coupled to the third connection of the coupling element and that is configured to receive a predetermined calibration signal when the coupling element couples out a signal from the signal measurement path into the third connection, and to generate a predetermined known calibration signal when the coupling element couples in a signal from the third connection into the signal measurement path. Further, the present disclosure provides a respective measurement system and a respective method.