Distributed Vector Network Analyzer with Flexible Receiver Positioning
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Solution Overview
Problem
Existing vector network analyzers suffer from measurement distortions due to the use of cables and adapters, which affect the accuracy of scattering parameter determination for devices under test, necessitating a more reliable and flexible measurement approach.
Innovation Solution
A distributed system comprising separate measurement receivers and a signal generator device, with a flexible connection to a data processing unit, allowing for adjustable positioning and minimizing distortion by reducing the reliance on long cables, and utilizing heterodyne or homodyne receivers for precise vector network analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single integrated vector network analyzer is used for measurement, then the device structure is simple and easy to operate, but measurement distortion occurs due to cables and adapters affecting accuracy
Solution Approach 1:
The system is divided into separate functional modules: a signal generator device and multiple measurement receivers that can be independently positioned. This segmentation eliminates the need for long cables and adapters between the analyzer and device under test, thereby reducing measurement distortion while maintaining operational simplicity through coordinated control of the distributed components.
Solution Approach 2:
The patent introduces flexible connections as intermediaries between the data processing unit and measurement receivers, allowing adjustable positioning without requiring fixed cable connections. This intermediary approach enables precise positioning of measurement receivers near the device under test while maintaining system integrality through software-controlled coordination.
2Adaptability or versatility
If long cables are used to connect the vector network analyzer to the device under test, then the device can be accessed regardless of size, but measurement results are distorted due to cable effects
Solution Approach 1:
By segmenting the measurement system into a central signal generator and distributed measurement receivers, each receiver can be positioned independently close to the device under test. This eliminates the need for long cables while maintaining the ability to measure various device sizes and configurations through flexible positioning of the receivers.
Solution Approach 2:
The measurement receivers are designed with adjustable and repositionable connections to the data processing unit, allowing dynamic positioning according to the specific measurement requirements. This dynamic adaptability enables precise measurements for devices of various sizes without being constrained by fixed cable lengths or connection points.
3Adaptability or versatility
If measurement receivers are fixed in position, then the system structure is simple, but the system cannot adapt to devices of different sizes
Solution Approach 1:
The connection between the data processing unit and measurement receivers is designed to be flexible and adjustable rather than fixed. This allows the measurement receivers to be repositioned according to the specific requirements of different devices under test, providing adaptability without requiring complex reconfiguration of the entire system architecture.
Solution Approach 2:
The signal generator device and measurement receivers are designed as universal components that can work together in various configurations. The flexible connection system allows the same basic components to adapt to different measurement scenarios and device sizes, reducing the need for specialized equipment for each application.
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
This system enables accurate determination of scattering parameters with minimized distortion, allowing for complex characterization of devices under test, including phase and amplitude analysis, and supports error correction, ensuring reliable vector network analysis without the limitations of traditional scalar methods.
Implementation Method 1
The incident electromagnetic wave is typically measured by a so-called reference channel whereas the reflected electromagnetic wave is measured by a measurement channel
Implementation Method 2
utilizing heterodyne or homodyne receivers for precise vector network analysis
Implementation Method 3
utilizing heterodyne or homodyne receivers for precise vector network analysis
Data Source
AI summary
A system for vector network analysis of a device under test, comprising at least two measurement receivers, at least one signal generator device formed separately from the at least two measurement receivers, and at least one data processing unit connected with the measurement receivers. The connection between the data processing unit and at least one of the measurement receivers is flexible so that the position of the measurement receiver is adjustable. Further, a method for vector network analysis of a device under test is described.