Radiated Performance Testing for Wireless Devices
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Solution Overview
Problem
Current methods for determining the radiated performance of wireless devices are often destructive, expensive, and inaccurate due to the use of external connectors and cables, which distort the true performance and require multiple steps and equipment, failing to account for self-interference and diverse propagation paths.
Innovation Solution
A system and method that allows for the determination of radiated performance characteristics like EIRP, TRP, and envelope correlation using a single, unaltered wireless device by measuring signal characteristics at multiple positions and recording synchronization data, eliminating the need for external connectors and cables, and enabling simultaneous testing of multiple performance metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external RF connectors and cables are used to measure radiated signal power, then signal power measurements can be made, but the true radiated performance of the wireless device is distorted
Solution Approach 1:
The patent extracts and removes the harmful external connectors and cables from the measurement system, replacing them with an integrated receiver antenna system that is inherently part of the wireless device. This eliminates the signal distortion caused by external interfaces while maintaining the ability to measure radiated signal power accurately.
Solution Approach 2:
The receiver antenna is designed to serve multiple functions: it acts as both the radiating element for transmission and the receiving element for measurement. This multi-functional approach eliminates the need for separate external connectors and cables, thereby preventing signal distortion while enabling comprehensive radiated performance measurement.
2Measurement precision
If destructive modification of the wireless device is performed to enable testing, then radiated signal power measurements can be made, but the wireless device becomes unusable for other tests
Solution Approach 1:
The wireless device performs its own radiated performance measurements using its built-in transmitter and receiver antennas. The device serves itself as the test subject and measurement instrument, eliminating the need for destructive modifications. This self-service approach allows the device to remain fully functional and reusable for other tests and operations.
3Measurement precision
If multiple external equipment and testing steps are used to determine radiated performance, then comprehensive measurements can be obtained, but testing expense and complexity increase
Solution Approach 1:
The patent merges the transmitter, receiver, and measurement functions into a single integrated wireless device system. The transmitter transmits signals through its antenna, the receiver captures the radiated signals through its antenna, and the processor analyzes the measurements. This consolidation eliminates the need for multiple external equipment and complex testing procedures while maintaining comprehensive measurement capability.
4Power
If external cables and connectors are used in the signal path, then signal power can be measured, but measurement accuracy is reduced due to additional interfaces
Solution Approach 1:
The patent removes all external cables and connectors from the signal path by using the wireless device's own receiver antenna to capture the radiated signals. This extraction of harmful interfaces eliminates additional reflection and loss points, thereby improving power measurement accuracy while maintaining the ability to measure signal power effectively.
Data Source
AI summary
Systems, methods, apparatus, processors and computer-readable media include a radiated testing module that executes a predetermined radiated performance test on a wireless device. The test dictates various performance-related parameters to measure and log at each of a plurality of predetermined positions. Further, the wireless device receives synchronization information operable to enable synchronization between the logged measurements and each of the positions. The synchronized log allows the wireless device, or another apparatus, to determine a radiated performance characteristic based on a predetermined analysis protocol. Further, the described embodiments allow for the determination of several radiated performance characteristics in a single test, using a single, unaltered wireless device.