Compact Multi-Port Wi-Fi MIMO Antenna with Segmented Ground Planes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Designing compact, multi-port, multi-band Wi-Fi antenna systems with high isolation is challenging due to limited space in modern devices, while maintaining performance and cost-effectiveness for high-speed data communication.
Innovation Solution
A compact, multi-port, multi-band Wi-Fi antenna system with four monopole type antennas, each with dual resonances at 2.4 GHz and 5 GHz, is developed, featuring separated ground planes and flexible substrates for improved isolation and reduced self-interference, enabling faster data transfer speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If compact size is achieved, then device integration is improved, but antenna isolation deteriorates
Solution Approach 1:
The antenna system divides the ground plane into separate ground structures for each antenna element. Each monopole antenna has its own dedicated ground plane segment, which prevents mutual coupling between adjacent antennas and maintains high isolation despite compact spacing.
Solution Approach 2:
The patent applies different ground plane configurations to different antenna elements based on their specific isolation requirements. Each antenna element is locally optimized with its own ground structure, allowing compact overall design while maintaining individual element performance.
2Productivity
If multiple antenna elements are added for MIMO, then data transfer speed is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple antenna elements and their ground planes into a single integrated substrate structure. This merging approach allows four antenna elements to coexist in a compact arrangement while sharing common fabrication processes and substrate materials, reducing overall system complexity.
Solution Approach 2:
Each monopole antenna element is designed with dual-band capability (2.4 GHz and 5 GHz), allowing a single antenna structure to perform multiple frequency functions. This multi-functionality reduces the total number of antenna elements needed while maintaining MIMO performance.
3Volume of moving object
If antenna elements are placed closer for compact design, then volume is reduced, but self-interference increases
Solution Approach 1:
By segmenting the ground plane into separate regions for each antenna element, the patent creates electromagnetic isolation barriers that prevent near-field coupling between closely spaced monopoles. This segmentation allows compact element spacing while maintaining high isolation levels.
Solution Approach 2:
The separated ground planes act as intermediary structures between adjacent antenna elements, providing electromagnetic shielding that reduces mutual interference. These ground segments serve as mediators that enable close spacing without sacrificing isolation performance.
Data Source
AI summary
In various embodiments, a compact, multi-port, multi-band, Wi-Fi antenna system is configured for high-isolation and improved performance. The antenna includes four monopole type antennas each having at least two resonances including 2.4 GHz and 5 GHz for use in Wi-Fi applications.