Portable RF Emission Measurement Device Using Virtual Chamber Simulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high costs associated with building, maintaining, and renting specialized environments for measuring radio frequency (RF) emissions from electronic devices, such as semi-anechoic chambers, make it economically challenging to comply with regulatory limits, especially during product development when multiple iterations are required.
Innovation Solution
A portable measurement device that includes an antenna, amplifier, and emissions analyzer, capable of measuring RF emissions without a specialized chamber, by adapting to external noise and converting near-field signals to far-field signals to simulate chamber conditions, thereby reducing the need for expensive testing environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized environments such as semi-anechoic chambers are used to measure RF emissions, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a virtual representation of the anechoic chamber environment through signal processing. The measurement system captures RF emissions and uses digital signal processing to simulate the acoustic absorption characteristics of an anechoic chamber, eliminating the need for physical specialized facilities while maintaining measurement accuracy.
Solution Approach 2:
The patent replaces the mechanical/physical structure of semi-anechoic chambers with computational methods. Instead of using physical absorptive materials and specialized chamber structures, the system uses software-based signal processing to achieve the same measurement objectives, thereby reducing device complexity and cost.
2Measurement precision
If specialized chambers are used for RF emission testing, then measurement precision is improved, but loss of time increases due to setup and maintenance requirements
Solution Approach 1:
The measurement system creates a virtual model of the anechoic chamber environment that can be rapidly deployed and removed. This virtual environment is established through software configuration rather than physical setup, eliminating the time required for chamber preparation, setup, and maintenance while maintaining measurement precision.
Solution Approach 2:
The system transitions from a static physical chamber requirement to a dynamic software-based solution. The virtual anechoic chamber environment can be quickly configured, modified, and removed as needed, providing flexibility and reducing the time commitment required for testing operations.
3Ease of operation
If portable measurement device is used, then ease of operation is improved, but measurement precision may worsen due to external noise
Solution Approach 1:
The patent converts the harmful effect of external noise into a beneficial filtering process. The system captures ambient noise along with the RF emissions and then uses signal processing techniques to identify and remove the noise components, thereby recovering the true emission signals while maintaining the portability advantage.
Solution Approach 2:
The measurement system incorporates feedback mechanisms where the captured signal is continuously analyzed and processed. The system uses the recorded ambient noise as feedback to refine its filtering algorithms, adapting to the specific acoustic environment and improving measurement precision despite the portable operation conditions.
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 solution allows for cost-effective measurement of RF emissions at the device's location, reducing the need for specialized chambers and facilitating compliance with regulatory standards by providing accurate and efficient testing without the need for expensive infrastructure.
Implementation Method 1
measure radio frequency emissions radiated from the devices
Implementation Method 2
amplifier, and emissions analyzer, capable of measuring RF emissions
Data Source
AI summary
Methods, apparatus, systems and articles of manufacture to measure radio frequency emissions are disclosed. An example measurement device includes an antenna to collect a radio frequency emission signal, a calibrator to convert the received radio frequency emission signal to a far-field signal, a filter to remove a baseline signal from the radio frequency emission signal, and an interface to output the filtered radio emission signal.