Dynamic Impedance Matching for Wireless Communication Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic devices face challenges in maintaining stable communication performance due to variations in peripheral objects and user interactions, which restrict impedance matching and radiation efficiency across different environments.
Innovation Solution
An electronic device with a conductive pattern and multiple impedance matching circuits connected to a feeding unit and the conductive pattern, allowing for dynamic impedance matching through a closed-loop scheme to adapt to various peripheral situations and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single impedance matching circuit is used at the input terminal, then the circuit complexity is reduced, but the impedance matching range is restricted and cannot effectively cope with various radiation environments
Solution Approach 1:
The patent divides the impedance matching system into multiple independent matching circuits (first impedance matching circuit connected to feeding unit, second impedance matching circuit connected to conductive pattern) that operate in different areas. This segmentation allows each circuit to handle specific matching scenarios, expanding the overall impedance matching range while keeping individual circuits relatively simple.
Solution Approach 2:
The patent extends impedance matching from a single-point (input terminal) control to multi-point control by placing matching circuits in different spatial locations (feeding unit area and conductive pattern area). This dimensional expansion enables the system to address impedance variations across different regions of the antenna structure, effectively coping with various radiation environments.
2Device complexity
If impedance matching is controlled only at the input terminal, then the control mechanism is simplified, but the matching effectiveness varies with peripheral objects and user interactions
Solution Approach 1:
The patent applies different impedance matching control strategies to different locations: the first impedance matching circuit handles matching at the feeding unit, while the second impedance matching circuit handles matching at the conductive pattern. This local quality approach ensures that each location's specific electrical characteristics are optimized independently, improving overall communication performance stability despite peripheral object variations.
Solution Approach 2:
The patent implements a closed-loop control scheme that measures input impedance and dynamically adjusts the impedance matching circuits accordingly. This feedback mechanism enables real-time adaptation to changing radiation environments, user interactions, and peripheral objects, maintaining reliable communication performance.
3Ease of manufacture
If conventional RF elements (switches, tunable capacitors) are used for impedance matching, then the matching mechanism is established, but the design is based on user-adjacent scenarios and cannot correspond to various situations
Solution Approach 1:
The patent creates a universal impedance matching system that can handle multiple situations through the combination of feeding unit matching and conductive pattern matching. The system can adapt to various scenarios including user-adjacent situations, non-user situations, and different radiation environments, making the design broadly applicable across diverse operational conditions.
Data Source
Figure 1~2a
Figure 2b~3a
Figure 3b~4
AI summary
A communication method performed in an electronic device including a conductive pattern and the electronic device are provided. The electronic device includes a conductive pattern used as a radiator for wireless communication, a feeding unit connected with the conductive pattern, a ground unit connected with the conductive pattern, a first impedance matching circuit disposed in a first area adjacent to the feeding unit and connected to the conductive pattern, a second impedance matching circuit disposed in a second area adjacent to the conductive pattern and connected to the conductive pattern, and a control unit that matches impedance by controlling at least one of the first impedance matching circuit and the second impedance matching circuit by a closed-loop scheme.