Antenna Isolation via Clearance Slots in Mobile Terminals
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Solution Overview
Problem
Current antenna systems in mobile terminals face challenges in achieving optimal isolation between multiple antennas due to their limited size, leading to coupling effects that affect performance.
Innovation Solution
The implementation of clearance slots and areas on a circuit board between antenna feed points, without electromagnetic conductors, to increase isolation by creating a stopband and reducing coupling effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If multiple antennas are arranged in limited space, then antenna integration is achieved, but coupling effect increases and isolation decreases
Solution Approach 1:
The patent divides the continuous electromagnetic conductor into separate segments by introducing clearance slots between antenna feed points. This segmentation creates isolated regions that reduce electromagnetic coupling while maintaining compact overall structure, directly addressing the contradiction between space efficiency and isolation.
Solution Approach 2:
The clearance slot acts as an intermediary element between adjacent antenna feed points. By introducing this non-conductive gap, the patent mediates the electromagnetic interaction between antennas, reducing coupling effects without requiring increased physical separation distance.
2Length of moving object
If antenna feed points are placed close together, then device size is reduced, but coupling effect increases
Solution Approach 1:
The patent extracts the harmful electromagnetic coupling by removing the continuous conductor path between antenna feed points. The clearance slot effectively takes out the conductive connection that causes coupling, allowing feed points to be placed close together without suffering from strong mutual interference.
Solution Approach 2:
The patent converts the potential harm of close proximity into a benefit by using the clearance slot to control the electromagnetic field distribution. The limited space constraint is transformed into an opportunity to create concentrated, well-defined isolation zones that improve overall antenna system performance.
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 enhances isolation between antennas in a limited space, mitigating the coupling effects and improving the performance of multiple-input and multiple-output antennas in mobile terminals.
Implementation Method 1
a clearance slot defined in an electromagnetic conductor of the circuit board and between antenna feed points for optimizing isolation between the antenna feed points
Data Source
AI summary
The present disclosure provides an antenna system for optimizing isolation and a mobile terminal. The system defines clearance slots in an electromagnetic conductor and between antenna feed points for optimizing isolation between antenna units, and comprises clearance areas disposed on both sides of the electromagnetic conductor having the clearance slots of the circuit board for arranging the antenna feed points. Through the present disclosure, it is possible to increase isolation between the diversity antenna and other antenna in a limited space, avoid the coupling effect between the antennas, and alleviate the problem present in traditional multiple-input multiple-output antennas limited by the size of the terminal device.