MIMO Antenna Isolation Adjustment Portions
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Solution Overview
Problem
Conventional MIMO antennas face poor isolation between radiation elements due to electromagnetic wave interference, especially in high-frequency bands, limiting high-speed data transmission and being inflexible in design and circuit configuration.
Innovation Solution
A MIMO antenna with multiple isolation adjustment portions, including a metallic pattern line and parasitic elements, is designed to provide distinct electromagnetic characteristics, utilizing band stop and electromagnetic induction to prevent current flow interference between radiation elements operating in multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between radiation elements is reduced to fit small-sized mobile terminals, then the compactness is improved, but the isolation between radiation elements deteriorates due to electromagnetic wave interference
Solution Approach 1:
The patent introduces isolation adjustment portions as intermediary elements between radiation elements. These portions include parasitic elements and isolation structures that mediate the electromagnetic interaction between adjacent radiation elements, redirecting current flow and reducing mutual interference while allowing close spacing.
Solution Approach 2:
The patent extracts the isolation function from the radiation elements themselves by introducing separate isolation adjustment portions. These portions are specifically designed to handle electromagnetic interference without participating in the primary radiation function, allowing the radiation elements to be positioned closer together.
2Object-affected harmful factors
If a slit is formed in the ground surface to improve isolation, then the electromagnetic interference is reduced, but the design flexibility and circuit configuration are restricted
Solution Approach 1:
The patent segments the isolation function into separate adjustment portions that can be independently configured. Instead of using a single ground surface slit that restricts design, the isolation is divided into multiple adjustable elements including parasitic elements and isolation structures that can be positioned and configured flexibly to achieve desired isolation without limiting circuit layout.
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 effectively improves isolation across all frequency bands, reduces the distance between radiation elements, and allows for more flexible circuit and design configurations, ensuring high-speed data transmission without interference.
Implementation Method 1
utilizing band stop and electromagnetic induction to prevent current flow interference between radiation elements
Implementation Method 2
utilizing band stop and electromagnetic induction to prevent current flow interference between radiation elements
Data Source
AI summary
A Multiple-Input and Multiple-Output (MIMO) antenna having a plurality of isolation adjustment portions is provided. The MIMO antenna includes a plurality of radiation elements and a plurality of isolation adjustment portions. The plurality of radiation elements is symmetrically formed on the surfaces of the left and right sides of a dielectric element having a predetermined shape, is spaced apart from each other by a predetermined distance, operates in multiple frequency bands, and includes feeding portions, respectively. The plurality of isolation adjustment portions is coupled to the plurality of radiation elements so that they have electromagnetic characteristics different from those of the plurality of radiation elements, thereby improving isolation in each of the frequency bands in which the plurality of radiation elements operate.