Patterned Radome Decoupling for Compact MIMO Antennas
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Solution Overview
Problem
Coupling between multiple antennas in spatially constrained environments leads to signal leakage and reduced channel capacity in MIMO systems, necessitating a decoupling solution without increasing the antenna device's overall size.
Innovation Solution
An antenna device comprising a base substrate with antenna elements arranged perpendicularly and a radome surrounding these elements, featuring a patterned surface to decouple electromagnetic waves and minimize indirect coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antennas are disposed in spatially constrained environments, then the data transmission capacity is increased through MIMO technology, but coupling between antennas occurs causing signal leakage and reduced efficiency
Solution Approach 1:
A radome with a specifically designed pattern portion is introduced as an intermediary structure between multiple antenna elements. The radome includes pattern portions with specific geometric patterns that act as a mediator to decouple electromagnetic waves radiated from adjacent antennas, thereby reducing coupling effects while maintaining the compact MIMO antenna configuration for high data transmission capacity
2Reliability
If a decoupling structure is added to reduce coupling between antenna elements, then signal leakage is reduced, but the overall size of the antenna device may increase
Solution Approach 1:
The radome is designed to serve multiple functions simultaneously: it acts as a protective enclosure for the antenna elements, provides structural support, and incorporates pattern portions that perform the decoupling function. This multi-functionality allows the decoupling structure to be integrated without significantly increasing the overall antenna device volume
3Area of stationary object
If antenna elements are arranged closely to maintain compact size, then the device footprint is reduced, but coupling between elements increases causing signal leakage
Solution Approach 1:
The radome with pattern portions is designed to convert the harmful coupling effect into a beneficial decoupling effect. The pattern portions are specifically configured to interact with the electromagnetic waves from adjacent antennas, transforming the coupling problem into an opportunity for active decoupling that maintains compact antenna spacing while reducing signal leakage
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 reduces signal leakage and maintains channel capacity by decoupling electromagnetic waves without enlarging the antenna device.
Implementation Method 1
the radome includes a pattern portion disposed on a surface facing the plurality of antenna elements and configured to be able to decouple electromagnetic waves radiated from the plurality of antenna elements
Implementation Method 2
the radome includes a pattern portion disposed on a surface facing the plurality of antenna elements and configured to be able to decouple electromagnetic waves radiated from the plurality of antenna elements
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
According to an embodiment of the present disclosure, provided is an antenna device comprising: at least one base substrate; a plurality of antenna elements disposed on the at least one base substrate in a height direction perpendicular to the at least one base substrate and supported by the at least one base substrate; and a radome spaced apart from the plurality of antenna elements in the height direction and configured to surround the at least one base substrate and the plurality of antenna elements, wherein the radome includes a pattern portion disposed on a surface facing the plurality of antenna elements and configured to be able to decouple electromagnetic waves radiated from the plurality of antenna elements.