Multi-Antenna Angle Correction for Misalignment-Robust Positioning
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Solution Overview
Problem
Existing electronic devices with dual antennas face recognition errors in signal reception angles due to misalignment, leading to deteriorated signal quality and communication services, especially in location determination applications.
Innovation Solution
An electronic device with multiple antennas, including a first and second antenna aligned in the x-axis direction and a third antenna misaligned in the y-axis direction, utilizes a control circuit to identify and correct signal reception angles by calculating two-dimensional coordinate values and applying compensation values based on misalignment distances to improve signal quality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual antennas are used for location determination, then signal quality and communication service are improved, but recognition error of signal reception angle occurs due to misalignment
Solution Approach 1:
The patent changes the geometric parameters of the antenna system by introducing a third antenna with specific spacing relationships to the first and second antennas. This parameter change creates a triangular antenna configuration that enables more robust angle calculation through multiple baseline measurements, thereby reducing recognition errors despite individual antenna misalignments
Solution Approach 2:
The control circuit calculates signal reception angles using phase differences from multiple antenna pairs and applies correction algorithms based on the geometric relationships between antennas. This feedback mechanism continuously adjusts angle determination to compensate for misalignment errors, improving measurement precision while maintaining reliability
2Adaptability or versatility
If dual antennas are used for location determination, then communication capability is enhanced, but service deterioration occurs when electronic device is tilted
Solution Approach 1:
The patent introduces a third antenna to create a three-element array configuration, changing the system parameters from dual to triple antenna geometry. This enables the system to maintain accurate angle determination and service quality across different device orientations by providing redundant measurement baselines that are less sensitive to tilting
Solution Approach 2:
The patent transitions from a linear dual-antenna arrangement to a two-dimensional triangular configuration by adding the third antenna. This dimensional change provides angular redundancy that makes the location determination service more robust against device tilting, as the system can compensate for orientation changes using the geometric relationships in the triangular array
3Measurement precision
If third antenna is added to correct misalignment, then signal reception angle accuracy is improved, but device complexity increases
Solution Approach 1:
The patent optimizes the spacing parameters between the third antenna and the first/second antennas to specific distances (e.g., half-wavelength or quarter-wavelength separations). This parameter optimization improves angle measurement precision while minimizing the increase in device complexity by establishing regular geometric patterns that simplify the control algorithm
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
The solution effectively reduces recognition errors in signal reception angles and enhances the reliability of data communication and location determination services by accurately correcting signal reception angles and filtering data based on two-dimensional coordinate values.
Implementation Method 1
The location determination method may identify a signal reception angle using a phase difference between signals received by two antennas
Data Source
AI summary
Disclosed is an electronic device including a plurality of antennas, and a control circuit configured to identify a two-dimensional coordinate value using signals received through the plurality of antennas and correct a signal reception angle based on the two-dimensional coordinate value, or to selectively filter data received from a signal source.