Antenna Decoupling Pattern Resonance Isolation
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Solution Overview
Problem
In electronic devices with multiple antennas, electromagnetic (EM) coupling between adjacent antennas can lead to interference, deteriorating communication quality, which is challenging to mitigate in devices with limited space due to the need for sufficient spacing.
Innovation Solution
The implementation of a decoupling pattern connected to the short-circuit patterns of adjacent antennas, utilizing resonance decoupling to improve EM isolation and radiation efficiency, allowing for closer antenna placement without significant interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas are arranged adjacently to save space, then device compactness is improved, but electromagnetic coupling between antennas increases causing interference
Solution Approach 1:
A decoupling pattern is introduced as an intermediary element between the first and second antennas. This decoupling pattern includes a first decoupling pattern connected to the first antenna and a second decoupling pattern connected to the second antenna, which interact to create resonance decoupling that reduces electromagnetic coupling between the adjacent antennas.
Solution Approach 2:
The patent changes the electrical parameters of the antenna system by introducing short-circuit patterns and decoupling patterns with specific impedance characteristics. The short-circuit pattern includes a first short-circuit pattern and a second short-circuit pattern that are adjacently arranged to achieve resonance decoupling, thereby altering the electromagnetic interaction between antennas.
2Object-affected harmful factors
If antennas are spaced apart to reduce electromagnetic coupling, then communication quality is improved, but device size increases
Solution Approach 1:
The decoupling pattern serves as a mediator that enables electromagnetic decoupling between antennas without requiring physical separation. The first decoupling pattern and second decoupling pattern are configured to interact at a specified distance, creating a decoupling effect that allows antennas to be placed closer together while maintaining communication quality.
Solution Approach 2:
The patent introduces decoupling patterns that extend the solution into additional spatial dimensions. The decoupling patterns are arranged in specific orientations and positions relative to the antennas, utilizing spatial dimensionality to achieve electromagnetic isolation without increasing the overall device footprint.
3Object-affected harmful factors
If decoupling patterns are added to reduce EM coupling, then radiation efficiency is improved, but device complexity increases
Solution Approach 1:
The decoupling patterns are merged with the existing antenna structures. The first decoupling pattern is connected to the first antenna, and the second decoupling pattern is connected to the second antenna, integrating the decoupling function into the antenna design rather than adding completely separate components.
Solution Approach 2:
The decoupling patterns serve multiple functions: they reduce electromagnetic coupling between antennas, improve radiation efficiency, and maintain impedance matching. The short-circuit patterns and decoupling patterns work together to achieve multiple performance goals simultaneously, reducing the need for additional separate components.
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 reduces EM coupling and enhances radiation efficiency, improving communication quality while allowing for more flexible antenna arrangement in compact devices.
Implementation Method 1
at least part of the first decoupling pattern and at least part of the second decoupling pattern are adjacently arranged to decouple using resonance decoupling
Data Source
AI summary
An electronic device having a plurality of antennas is provided. The electronic device includes a housing, a printed circuit board positioned within the housing, and including a ground, a wireless communication circuit mounted on the printed circuit board, a first antenna configured to transmit or receive a first wireless signal with the wireless communication circuit, and a second antenna configured to transmit or receive a second wireless signal with the wireless communication circuit. The first antenna includes a first short-circuit pattern connected to the ground, and the second antenna includes a second short-circuit pattern connected to the ground. At least part of the first short-circuit pattern and at least part of the second short-circuit pattern are arranged to be adjacently occurred a decoupling resonance.