UWB Radar Biometric Sensor Antenna Configuration
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Solution Overview
Problem
Existing electronic devices using ultra-wideband (UWB) radar technology face challenges in obtaining reliable biometric signals regardless of their mounting state, as signal quality varies with posture, position, and direction, limiting accurate measurement and analysis of biometric data.
Innovation Solution
An electronic device equipped with a sensor module, UWB communication circuit, and processor that identifies its mounting state, selects optimal antenna combinations, and adjusts control parameters to maintain signal quality, allowing for contactless biometric signal measurement and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device uses a fixed antenna configuration, then the device structure is simple, but the signal quality varies with mounting state
Solution Approach 1:
The patent implements dynamic antenna configuration by selecting different antenna combinations based on the detected mounting state. The processor identifies the mounting state through sensor data and dynamically switches between predefined antenna combinations to optimize signal quality for each state, transforming a static system into an adaptive one that responds to environmental changes.
Solution Approach 2:
The system changes the operational parameters of the antenna system by selecting different antenna combinations corresponding to different mounting states. Each mounting state has an optimally configured antenna combination that maximizes signal quality, and the system transitions between these parameter configurations based on real-time mounting state detection.
2Reliability
If the electronic device adjusts antenna configuration dynamically, then the signal quality is maintained, but the device complexity increases
Solution Approach 1:
The patent pre-defines multiple antenna combinations corresponding to different mounting states before operation. When the mounting state is detected, the system simply selects from these pre-configured options rather than performing complex real-time optimization, reducing computational complexity while maintaining signal quality.
Solution Approach 2:
The system uses sensor data to detect the mounting state and provides feedback to the processor, which then selects the appropriate antenna combination. This closed-loop feedback mechanism ensures that the antenna configuration continuously adapts to the current mounting state, maintaining optimal signal quality for biometric measurement.
3Reliability
If the device uses all antenna combinations, then the signal quality is maximized, but the power consumption increases
Solution Approach 1:
Instead of uniformly activating all antennas regardless of mounting state, the system applies local quality optimization by selecting specific antenna combinations tailored to each mounting state. This ensures that only the necessary antennas are activated for the current operational context, reducing power consumption while maintaining signal quality.
Solution Approach 2:
The system uses a partial action approach by activating only the subset of antennas required for the current mounting state rather than all antennas. This selective activation reduces power consumption while still achieving the necessary signal quality for biometric measurement in the given mounting configuration.
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
Enables reliable and accurate biometric signal measurement and analysis regardless of the device's mounting state, improving signal quality and reducing power consumption by dynamically adjusting antenna configurations based on real-time data.
Implementation Method 1
UWB uses signals with a bandwidth of 500 MHz and a very short pulse width of several nano seconds (ns) in the 3.1 GHz to 10.6 GHz frequency band
Implementation Method 2
a sensor module including at least one sensor
Data Source
AI summary
Disclosed is an electronic device comprising: a sensor module, a communication circuit, and at least one processor. The at least one processor may be configured to: identify a mounting state of the electronic device based on sensor data received from the sensor module, select at least one antenna combination including at least one transmission antenna and at least one reception antenna from among the one or more antennas according to the mounting state, obtain a radar signal related to a measurement target from the communication circuit through the at least one antenna combination, obtain a biometric signal from the obtained radar signal, evaluate a signal quality of the biometric signal, and adjust control parameters for an antenna combination selected from among the at least one antenna combination according to the sensor data, the radar signal, and the signal quality of the biometric signal.