Automated VNA Calibration Device With Switching Unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing calibration methods for vector network analyzers lack full automation, leading to inefficiencies and potential calibration errors.
Innovation Solution
A calibration device with at least one connection port, passive and active calibration standards, and a switching unit that connects these standards to the measurement device, enabling automated calibration through signal measurement or generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration methods are used for vector network analyzers, then calibration can be performed with simpler equipment, but the calibration process is time-consuming and prone to human error
Solution Approach 1:
The calibration device enables the vector network analyzer to perform self-calibration automatically. The switching unit connects different calibration standards (open, short, load, through) to the measurement device without human intervention, and the control unit automates the entire calibration sequence, allowing the system to calibrate itself
Solution Approach 2:
Manual mechanical calibration operations are replaced by an automated control system that uses electronic switching units and control algorithms. The control unit receives control signals and automatically sequences the connection of various calibration standards, replacing manual mechanical adjustment with automated electronic control
2Productivity
If automated calibration is implemented, then calibration efficiency and accuracy improve, but device complexity increases due to additional components
Solution Approach 1:
The calibration device is designed to support multiple calibration standards (open, short, load, through) and can perform different calibration procedures through a single unified system. The switching unit can connect to various calibration standards, and the control unit manages different calibration sequences, making the device versatile for multiple calibration needs
Solution Approach 2:
Multiple calibration standards and functions are integrated into a single calibration device housing. The switching unit combines multiple connection paths into one unified interface, and the control unit integrates all calibration operations into a single automated system, reducing overall system complexity despite increased functionality
3Reliability
If multiple calibration standards are used simultaneously, then comprehensive calibration is achieved, but the switching complexity and potential for connection errors increase
Solution Approach 1:
The calibration device incorporates measurement units that measure RF signals fed to the calibration standards. These measurements provide feedback to the control unit, which uses the measurement results to determine subsequent connection actions. This feedback mechanism ensures accurate calibration while managing switching complexity through intelligent control
Solution Approach 2:
The switching unit is designed to dynamically connect different calibration standards based on control signals. The switching configuration changes automatically during the calibration process, transitioning between different standards as needed. This dynamic switching capability allows comprehensive calibration while the control unit manages the complexity of multiple connection states
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
Ensures accurate and efficient calibration of vector network analyzers, reducing inaccuracies and inefficiencies by allowing fully automated calibration processes.
Implementation Method 1
the at least one active calibration standard comprises a signal measurement unit configured to measure a RF signal fed to the at least one active calibration standard via the at least one connection port and the switching unit in magnitude and/or phase
Implementation Method 2
the at least one active calibration standard comprises a signal generation unit configured to generate and output a reference signal to the at least one connection port via the switching unit
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A calibration device (11) for a measurement device, especially a vector network analyzer (10), is provided. Said calibration device (11) comprises at least one connection port (12) for connecting the calibration device (11) to the measurement device, especially the vector network analyzer (10), at least one passive calibration standard (13), at least one active calibration standard (14), and a switching unit (15) configured to connect the at least one connection port (12) alternatively to one of the at least one passive calibration standard (13) and the at least one active calibration standard (14). In this context, the at least one active calibration standard (14) comprises a signal measurement unit configured to measure a RF signal fed to the at least one active calibration standard (14) via the at least one connection port (12) and the switching unit (15) in magnitude and/or phase. Alternatively, the at least one active calibration standard (14) comprises a signal generation unit configured to generate and output a reference signal to the at least one connection port (12) via the switching unit (15).