Dynamic Antenna Path Switching for Bezel Contact Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices face challenges in maintaining antenna radiating performance due to capacitance changes when a user contacts the metallic bezel, which is used as an antenna, leading to degradation in signal transmission.
Innovation Solution
An electronic device design that includes a housing with metallic members, a communication circuit, and a sensor to detect external contacts, allowing for the adjustment of the electric path between these members to maintain optimal antenna performance by switching the connection state of sub-grounds and forming new resonant paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the metallic bezel is used as an antenna radiator, then the antenna performance is improved, but the radiating performance degrades when user contact changes the capacitance
Solution Approach 1:
The patent implements a dynamic switching mechanism that changes the antenna configuration based on detected user contact. A sensor detects capacitance changes caused by user contact, and a switch dynamically reconfigures the antenna circuit between different operational states (first antenna configuration and second antenna configuration), allowing the system to adapt to varying contact conditions and maintain stable radiating performance.
Solution Approach 2:
The patent changes the electrical parameters of the antenna system by switching between different capacitance values. When user contact alters the original capacitance, the switching mechanism connects different capacitor configurations or antenna elements, thereby changing the overall capacitance parameter to compensate for the contact-induced variation and maintain resonance frequency stability.
2Adaptability or versatility
If multiple antennas are designed to cover different frequency bands, then the communication coverage is improved, but the device complexity increases
Solution Approach 1:
The patent makes a single antenna structure multi-functional by enabling it to operate across multiple frequency bands through dynamic reconfiguration. The same physical antenna elements can be switched between different connection topologies and impedance configurations, allowing one antenna system to serve multiple communication standards (e.g., LTE, Wi-Fi, Bluetooth) that previously would have required separate dedicated antennas.
Solution Approach 2:
The patent employs dynamic switching mechanisms that reconfigure the antenna circuitry in real-time based on the required frequency band. Switches and relays dynamically alter the electrical length, capacitance, and inductance of the antenna system, enabling a single physical structure to adapt its resonant characteristics for different frequency bands without requiring multiple fixed antennas.
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 effectively prevents radiating performance degradation by dynamically adjusting the antenna configuration in response to user contact, ensuring consistent signal transmission across various frequency bands.
Implementation Method 1
the capacitance component of the split portion may be changed such that the radiating performance of the antenna may be remarkably degraded
Implementation Method 2
a first metallic member that forms a first portion of the side face, and includes a first end and a second end
Implementation Method 3
it is possible to form a resonance in a desired frequency band by using the coupling antenna radiator
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing that includes a first face, a second face that is directed opposite to the first face, and a side face that at least partially enclose a space between the first face and the second face, a first metallic member, a second metallic member, and a third metallic member that form a side face, a sensor configured to detect whether an external object comes in contact with at least one of the first metallic member, the second metallic member, and the third metallic member, and to generate a signal, and a circuit configured to change an electric path between at least one of the first metallic member, the second metallic member, and the third metallic member, and the ground member, at least partially based on the generated signal.