Anechoic Chamber Reflecting Surfaces for In-Field RF Reconfiguration
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Solution Overview
Problem
Existing anechoic chambers require significant maintenance efforts and time to modify reflecting properties, leading to inefficient RF-related testing of devices under test, as altering one surface affects the entire system and necessitate manual access, hindering flexible and cost-effective test scenarios.
Innovation Solution
An anechoic chamber with intelligent reflecting surfaces controlled by a processing circuit to variably manipulate electromagnetic wave reflections without physical movement, allowing in-field adjustments to reflect properties without interrupting testing, using materials like meta-structures, liquid crystals, or holographic beam forming devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual access is required to modify reflecting surfaces, then the reflecting properties can be changed, but the testing procedure must be interrupted and maintenance time increases
Solution Approach 1:
The patent applies dynamics by making the reflecting surfaces adjustable during operation through motorized mechanisms. The reflecting surfaces can be repositioned dynamically without manual intervention, allowing the system to adapt reflecting properties while maintaining continuous testing operations. This resolves the contradiction by enabling flexibility (adaptability) without interrupting the testing procedure (reducing time loss).
Solution Approach 2:
The system implements self-service through automated control mechanisms that can modify reflecting surface properties without requiring manual access. The automated positioning systems and adjustable surfaces allow the anechoic chamber to reconfigure itself based on testing requirements, eliminating the need to interrupt testing for manual adjustments and thereby reducing time loss while maintaining adaptability.
2Reliability
If reflecting surfaces are installed in series to create reflection systems, then electromagnetic waves are reflected multiple times, but modifying individual surface properties impacts the entire system and increases maintenance expenses
Solution Approach 1:
The patent applies segmentation by dividing the reflecting surface system into independent, modular units that can be adjusted or replaced individually. Each reflecting surface module operates independently, allowing modification of one surface without affecting the entire reflection system. This maintains measurement signal quality (reliability) through controlled reflections while reducing maintenance effort (ease of repair) since individual modules can be serviced separately without system-wide interruptions.
Solution Approach 2:
The system utilizes parameter changes by enabling independent adjustment of reflecting properties for each surface module through automated mechanisms. This allows modification of specific surface parameters (such as reflection angle or surface material properties) without altering the entire system, thereby maintaining reliable measurements while simplifying maintenance operations through localized parameter adjustments.
3Adaptability or versatility
If manual access is needed to modify reflecting properties, then the properties can be altered, but the process is time-consuming and costly
Solution Approach 1:
The patent applies mechanics substitution by replacing manual mechanical adjustment operations with automated control systems. Motors, actuators, and control circuits substitute for manual access, enabling rapid modification of reflecting properties without human intervention. This maintains full adaptability of reflection properties while dramatically improving testing efficiency by eliminating the time and cost associated with manual reconfiguration.
Solution Approach 2:
The system implements self-service through automated control mechanisms that enable independent modification of reflecting properties without external intervention. The automated positioning and adjustment systems allow the anechoic chamber to reconfigure reflecting surfaces based on testing requirements, maintaining adaptability while improving productivity by eliminating manual operation time and associated costs.
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
Facilitates flexible and efficient RF testing with reduced maintenance, enabling rapid property modifications and improved measurement reliability through wireless cable methods, ensuring well-defined signal correlations and reduced maintenance costs.
Implementation Method 1
at least one reflecting surface (18) arranged in the testing area (16) of the anechoic chamber (10). The reflecting surface (18) is configured to variably modify in a defined manner at least one reflection process of at least one electromagnetic wave (34A)
Data Source
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AI summary
The present disclosure generally relates to an anechoic chamber for testing a device under test over-the-air, a system, and a method. The anechoic chamber comprises at least one reflecting surface being configured to variably manipulate in a defined manner at least one reflection process of at least one electromagnetic wave usable for testing the device under test.