Multi-Radiator Antenna Layout for Resonance Isolation
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Solution Overview
Problem
Existing antenna designs face challenges in achieving good isolation between multiple resonances, which is crucial for efficient wireless communication, especially in multi-frequency band operations.
Innovation Solution
The antenna apparatus comprises multiple radiators with strategically placed coupling gaps and ground terminals, along with feeding sources and matching circuits, to generate multiple resonances with improved isolation. This configuration allows for compact design and efficient operation in various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are used to achieve multi-frequency band operation, then the adaptability is improved, but the isolation between resonances deteriorates
Solution Approach 1:
The antenna apparatus divides the radiating structure into multiple independent radiators (first radiator, second radiator, third radiator, fourth radiator) with distinct resonant frequencies. Each radiator is segmented to operate in different frequency bands, achieving multi-frequency band operation while maintaining isolation between resonances through physical and electrical separation.
Solution Approach 2:
Ground terminals are introduced as intermediary elements between radiators to control current paths and enhance isolation. The ground terminals provide reference potentials and current return paths that prevent unwanted coupling between adjacent radiators, thereby maintaining resonance isolation while enabling multi-frequency operation.
2Reliability
If multiple ground terminals are introduced to improve isolation between resonances, then the reliability is improved, but the device complexity increases
Solution Approach 1:
Multiple ground terminals are merged into a shared ground structure that serves multiple radiators simultaneously. The ground terminals are electrically connected to form a common reference potential, reducing the number of independent ground connections while maintaining isolation between resonances through the unified ground system.
Solution Approach 2:
The ground terminals are designed to serve multiple functions: providing reference potential for multiple radiators, controlling current distribution patterns, and enhancing isolation between resonances. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity.
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 achieves effective isolation between resonances, enabling simultaneous operation in multiple frequency bands with improved radiation performance and system efficiency.
Implementation Method 1
a first coupling gap is provided between one end of the second radiator and the first radiator... the first excitation signal is coupled to the second radiator through the first coupling gap, and is grounded through the first ground terminal, to excite at least part of the first radiator and the second radiator to jointly generate a first resonance
Implementation Method 2
excite at least part of the first radiator and the second radiator to jointly generate a first resonance
Implementation Method 3
the second feeding source... is configured to provide a second excitation signal to excite a part of the third radiator located on the side of the second ground terminal away from the first ground terminal, to generate a second resonance
Data Source
AI summary
Provided are an antenna apparatus and an electronic device. A first coupling gap is formed between one end of a second radiator and a first radiator, and the other end of the second radiator is provided with a first ground terminal. One end of a third radiator is connected to the first ground terminal, and the other end thereof extends in a direction away from the second radiator. The third radiator is provided with a second ground terminal spaced apart from the first ground terminal. At least part of the first radiator and the second radiator jointly generate a first resonance. A part of the third radiator located on a side of the second ground terminal away from the first ground terminal generates a second resonance.