Folded Dipole Antenna Structure for Low-Coupling Phased Arrays
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Solution Overview
Problem
Phased array antenna systems face challenges with high coupling among adjacent antenna elements, leading to degraded performance and limited capability for transmitting and receiving multiple data streams, particularly in applications like 6G cellular communications.
Innovation Solution
A dipole antenna structure comprising four dipoles aligned in parallel and connected through a signal delay line to a common signal feed, which reduces coupling and enhances gain, allowing for compact and efficient RF signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If phased array antenna systems use adjacent antenna elements for compact arrays, then the antenna structure achieves compact size and high gain, but high coupling occurs among adjacent elements leading to degraded performance
Solution Approach 1:
The patent transitions from a conventional planar arrangement of antenna elements to a three-dimensional folded dipole structure. The dipoles are folded back on themselves in multiple dimensions, creating a compact volume while maintaining sufficient spatial separation between adjacent elements. This dimensional transformation allows the antenna to achieve both compact size and reduced coupling by utilizing spatial distribution in three dimensions rather than a flat two-dimensional plane.
2Productivity
If multiple data streams are transmitted through adjacent antenna elements, then communication capacity increases, but coupling among elements degrades the capability for handling multiple data streams
Solution Approach 1:
The patent divides each antenna element into multiple folded segments rather than using simple straight dipoles. Each folded dipole consists of multiple segments arranged in a three-dimensional configuration, which segments the current distribution and reduces the coupling between adjacent antenna elements. This segmentation allows multiple data streams to be transmitted with better isolation, improving the system's capability to handle multiple concurrent communications.
3Ease of manufacture
If conventional dipole arrangements are used, then manufacturing is simple, but coupling among adjacent dipoles causes high cross-polarization and limits gain
Solution Approach 1:
The patent employs folded dipole structures that extend into three-dimensional space rather than simple planar arrangements. The dipoles are folded back on themselves in multiple directions, creating a compact 3D configuration that maintains manufacturing simplicity while significantly reducing cross-polarization. The folded geometry provides better spatial separation between adjacent elements, reducing coupling and improving gain without requiring complex manufacturing processes.
Data Source
AI summary
Dipole antenna structures are disclosed. In certain embodiments, a dipole antenna structure includes a first dipole, a second dipole, a third dipole, and a fourth dipole aligned in parallel. The dipole antenna structure further includes a signal delay line structure electrically connected to a common signal feed. The dipoles are electrically connected to the common signal feed through the signal delay line structure.