Near-Field MIMO Wireless Test System Antenna Matrix Emulation
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Solution Overview
Problem
Current technologies lack standardized systems and models for adequately testing the performance of multiple-input multiple-output (MIMO) wireless devices, which are essential for ensuring their functionality and efficiency in various operating conditions.
Innovation Solution
The development of enhanced near-field testing systems and processes that emulate uplink and downlink performance of MIMO devices over a range of distances, utilizing an antenna matrix with programmable attenuators and Butler matrices to simulate real-world conditions, allowing for automated testing and calibration within a near-field environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standardized testing systems are implemented for MIMO devices, then measurement precision and reliability are improved, but device complexity and testing infrastructure requirements increase
Solution Approach 1:
The testing system is divided into separate functional modules: a MIMO device under test, a testing device with signal generation and measurement capabilities, and a processor for analyzing results. This segmentation allows each component to be optimized independently while maintaining overall system precision without requiring excessive complexity in any single component.
2Adaptability or versatility
If testing is performed over a range of distances in near-field environment, then adaptability to real-world conditions is improved, but testing time and infrastructure requirements increase
Solution Approach 1:
The system performs preliminary signal generation and channel emulation before actual performance measurement. By pre-configuring test signals and emulating wireless channels in advance, the system reduces the time required for actual distance-based testing while maintaining adaptability to various real-world operating conditions through the emulated channels.
3Productivity
If automated testing processes are implemented, then productivity and efficiency are improved, but device complexity and automation infrastructure requirements increase
Solution Approach 1:
The testing device is designed with multi-functionality, serving as both a signal generator and a measurement instrument. This universal device can perform multiple testing functions without requiring separate specialized equipment for each function, thereby improving productivity while limiting the increase in overall system complexity.
Data Source
AI summary
Systems, processes, and structures allow enhanced near-field testing of the uplink and/or downlink performance of MIMO wireless devices (DUT), such as for any of product development, product verification, and/or production testing. Signal channels may preferably be emulated to test the performance of a device under test (DUT) over a range of simulated distances, within a near-field test environment. An enhanced process provides automated testing of a DUT over a wireless network, e.g. such as but not limited to a WLAN. The enhanced MIMO channel emulator may preferably be operated over a high dynamic range.