Sensor Fusion Antenna Tuning for Wireless Devices
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Solution Overview
Problem
Conventional antenna-tuning systems in wireless communication devices rely solely on electrical measurements, leading to long convergence times and high power consumption in determining optimal tuning settings, and fail to adapt quickly to changes in the user's environment, such as body proximity, causing fluctuations in signal power.
Innovation Solution
A system that employs sensor fusion by integrating sensor management and tuner management components to determine antenna tuning settings based on sensor information, such as position and orientation, in conjunction with electrical measurements, to efficiently adjust antenna tuning and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional antenna-tuning systems rely solely on electrical measurements, then measurement precision is maintained, but convergence time increases and power consumption increases
Solution Approach 1:
The patent combines multiple sensing modalities (accelerometer, gyroscope, proximity sensor, touch sensor) with electrical measurements to determine antenna tuning settings. This fusion of diverse data sources enables faster convergence to optimal tuning settings while reducing reliance on slow electrical measurements alone, thereby reducing convergence time without sacrificing measurement precision.
Solution Approach 2:
The system performs preliminary sensing using accelerometers, gyroscopes, and proximity sensors to predict optimal antenna tuning settings before conducting electrical measurements. This preliminary action based on device orientation and body proximity data narrows down the search space for electrical measurements, significantly reducing convergence time while maintaining measurement precision.
2Measurement precision
If conventional antenna-tuning systems rely solely on electrical measurements, then measurement precision is maintained, but power consumption increases
Solution Approach 1:
The patent merges low-power sensor data (accelerometer, gyroscope, proximity sensor) with electrical measurements to determine antenna tuning settings. This combination allows the system to use primarily sensor data for tuning decisions, significantly reducing power consumption while maintaining measurement precision through selective electrical measurements.
Solution Approach 2:
The system performs preliminary orientation and proximity assessment using low-power sensors before conducting power-intensive electrical measurements. This preliminary action based on device orientation and body proximity data enables the system to avoid unnecessary electrical measurements, reducing power consumption while maintaining measurement precision when needed.
3Device complexity
If antenna tuning does not adapt to body proximity, then device complexity is reduced, but adaptability decreases causing signal power fluctuations
Solution Approach 1:
The patent merges data from proximity sensors, accelerometers, and gyroscopes with antenna tuning control. This fusion enables the system to adapt to body proximity and device orientation changes, improving environmental adaptability while managing complexity through integrated sensor processing and lookup table-based tuning decisions.
Data Source
AI summary
Sensor fusion for antenna tuning for wireless devices is provided to enhance antenna tuning and reduce power consumption of wireless devices. A sensor management component (SMC) obtains sensor information from sensors associated with a wireless device and determines position and/or orientation of the wireless device in relation to the user, and/or tracks movement of the wireless device. The SMC communicates sensor-based information relating to the position, orientation, and/or movement associated with the wireless device to a tuner management component (TMC) associated with a tuner component and a set of antennas. The TMC determines electrical measurements of the signal from the set of antennas, and determines a tuning setting for the set of antennas based on the sensor-based information and/or the electrical measurements. The TMC provides control information to the tuner component to adjust the tuning of the set of antennas based on the tuning setting.