Radar OTA Test Chamber Layout for Parallel Verification
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Solution Overview
Problem
Existing radar devices require efficient and fast operational and functional verification systems for mass production, with a need for simultaneous testing of multiple units in anechoic conditions.
Innovation Solution
An over-the-air (OTA) verification system using an array of antenna probes and reflectors in an anechoic test chamber, combined with automated handling mechanisms, allows for nearly simultaneous testing of multiple radar devices through a positioner system that moves devices between test sections, utilizing wired or wireless communication and power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radar devices are tested simultaneously in an anechoic chamber, then testing efficiency and productivity are improved, but the system complexity and device complexity increase
Solution Approach 1:
The test chamber is divided into multiple independent test sections, each capable of testing a radar device separately. This segmentation allows parallel testing of multiple devices while maintaining manageable complexity in each individual test section.
Solution Approach 2:
Each test section is designed with universal components including antenna arrays and reflector arrays that can test multiple radar devices using the same testing methodology. This multi-functionality reduces overall system complexity by reusing identical test configurations across multiple sections.
2Measurement precision
If antenna arrays and reflector arrays are used for OTA testing, then measurement precision and reliability are improved, but the test chamber volume and area requirements increase
Solution Approach 1:
The testing system utilizes three-dimensional spatial arrangement of antenna arrays and reflector arrays within the test chamber. By optimizing the vertical and horizontal positioning of these arrays, the system achieves accurate OTA measurements without requiring excessive chamber volume.
Solution Approach 2:
Multiple antenna elements and reflector elements are arranged in nested or compact configurations within each test section. This allows the system to achieve the required measurement precision while minimizing the physical space occupied by the testing apparatus.
3Ease of operation
If automated handling mechanisms and positioners are implemented, then ease of operation and productivity are improved, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The automated handling mechanisms and positioners are designed to automatically position radar devices and adjust testing parameters without requiring complex external control systems. This self-service capability simplifies the overall manufacturing and operation while maintaining high automation levels.
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 system enables efficient, compact, and fast verification of multiple radar devices by minimizing interference and ensuring line-of-sight communication, thereby enhancing production efficiency and reducing testing time.
Implementation Method 1
Each section has an array of antenna probes or corner reflectors that enable line-of-sight communication with the RUTs
Implementation Method 2
The chamber is configured with absorbers on inner surfaces of the chamber
Implementation Method 3
Each section has an array of antenna probes or corner reflectors that enable line-of-sight communication with the RUTs
Data Source
Figure 1
Figure 2
AI summary
Systems and methods for performing over-the-air verification tests for radar. A test chamber includes multiple sections, the sections separated by metal walls. The inner surfaces of the metal walls include absorbers. Each section includes defined testing devices to verify a defined function of a radar device. The defined testing devices can include a horn antenna and corner reflector. Each section has a defined number of rows. Each row has a defined testing device. Test fixtures hold a defined number of the radar devices in correspondence with the defined number of rows. The defined number of the radar devices placed on the test fixture via a placement device. A positioner to align under the sections and move the test fixtures through the sections of the test chamber and a controller to control operation of the positioner, the radar devices, and the placement device to execute over-the-air verification of the radar devices.