Antenna Beam Pattern Restoration Using External Object Detection
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Solution Overview
Problem
Existing electronic devices with antenna systems face challenges in maintaining consistent beam patterns when external objects, such as cases or user grips, alter the radiation characteristics, making it difficult to restore the original beam pattern in response to various changes.
Innovation Solution
An electronic device with a processor, antenna elements, and RFIC that detects external objects and adjusts beam patterns using compensation data stored in memory, either by matching known registration structures or generating new compensation data based on reflection signals to restore the original beam pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antenna device is used for high-frequency communication, then communication capability is improved, but beam pattern stability deteriorates when external objects are present
Solution Approach 1:
The system pre-stores multiple compensation data sets corresponding to different external object types (cases, grips, etc.) in memory before actual communication occurs. When an external object is detected, the appropriate pre-prepared compensation data is quickly retrieved and applied, avoiding real-time calculation delays and ensuring rapid beam pattern restoration.
Solution Approach 2:
The system dynamically adjusts beamforming parameters (phase, amplitude, direction) based on detected external objects by applying stored compensation data. This changes the radiation characteristics of the antenna elements to counteract the distorting effects of external objects, restoring the original beam pattern despite the presence of cases or user grips.
2Adaptability or versatility
If compensation data is stored for various external objects, then beam pattern restoration capability is improved, but device complexity increases
Solution Approach 1:
The system pre-stores multiple compensation data sets corresponding to different external object types (cases, grips, etc.) in memory before actual communication occurs. When an external object is detected, the appropriate pre-prepared compensation data is quickly retrieved and applied, avoiding real-time calculation delays and ensuring rapid beam pattern restoration.
Solution Approach 2:
Instead of storing complete beamforming configuration files for each external object scenario, the system stores compact compensation data representations that capture the essential correction information. This copied and simplified data structure reduces memory requirements while maintaining the ability to restore beam patterns for various external conditions.
3Reliability
If beam pattern is changed in response to external objects, then communication performance is maintained, but detection precision requirements increase
Solution Approach 1:
The system employs dynamic beam pattern adjustment based on real-time detection of external objects. When an external object is detected through changes in radiation characteristics, the processor automatically selects and applies the corresponding compensation data to restore the original beam pattern, ensuring continuous communication performance without manual intervention.
Solution Approach 2:
The system monitors changes in beam patterns caused by external objects and uses this feedback information to determine when compensation is needed. By detecting deviations from the expected beam pattern and automatically applying stored compensation data, the system creates a closed-loop control mechanism that maintains communication performance despite external disturbances.
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 device effectively changes and restores beam patterns to maintain consistent communication performance even with varying external objects, ensuring reliable wireless communication.
Implementation Method 1
a reflection signal obtained as a signal output by the antenna device is reflected from the external object and is input to the antenna device
Implementation Method 2
an antenna array structure including a plurality of antenna elements may be applied to overcome a high transmission loss. The antenna array structure includes a patch antenna structure or a dipole antenna structure, which is capable of beamforming
Implementation Method 3
Changes in the characteristics of the antenna device may include a reflection loss or phase shift that is caused by the relative permittivity of the external object
Data Source
AI summary
Disclosed is an electronic device including a housing, an antenna device including at least one antenna element disposed on one surface or inside of a printed circuit board disposed inside the housing and a radio frequency integrated chip (RFIC) for processing a signal in a frequency band, which is transmitted and/or received through the at least one antenna element, a communication circuit, a memory, and a processor configured to detect an external object, which contacts at least part of the housing, based on a change in a beam pattern of a beam formed by the antenna device, determine whether at least some information of the external object is information included in registration object data stored in the memory, and change the beam pattern by using first compensation data, which is stored in the registration object data and which is changed depending on a registration structure corresponding to the external object when the at least some information of the external object is included in the registration object data.