Split-Ring Antenna Layout for Dual-Polarization Orthogonality
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Solution Overview
Problem
Existing antennas with split-ring resonators fail to ensure orthogonality of radiation patterns between dual-polarized waves when additional split-ring resonators are arranged on adjacent sides of a conductive board.
Innovation Solution
The design includes antenna elements on opposite sides of a nearly rectangular conductive board, each comprising a feeding wire and a split-ring conductor, where the feeding wire is electrically connected to the split-ring conductor and extends inside it, ensuring orientations of electric fields in polarization directions are the same for dual-polarization, thereby enhancing orthogonality of radiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an additional split-ring resonator is arranged on an adjacent side of the conductive board to dual-polarize the antenna, then the antenna achieves dual-polarization capability, but the orthogonality of radiation patterns between two polarized waves cannot be ensured
Solution Approach 1:
The patent transitions from arranging resonators on adjacent sides (2D plane arrangement) to arranging them on opposite sides of the conductive board. This dimensional change in the arrangement pattern enables both dual-polarization capability and maintains orthogonality of radiation patterns, as the opposite side arrangement creates proper spatial separation and field orientation.
2Reliability
If split-ring resonators are arranged on opposite sides of the conductive board, then the orthogonality of radiation patterns is improved, but the antenna size and complexity increase
Solution Approach 1:
The conductive board serves multiple functions: it acts as the ground plane for the antenna elements, provides the structural support for mounting the split-ring resonators on opposite sides, and functions as the feeding network substrate. This multi-functionality reduces overall device complexity despite the opposite-side arrangement.
Solution Approach 2:
The patent combines the ground plane, feeding network, and resonator mounting structure into a single integrated conductive board assembly. The feeding wires are directly connected to the split-ring resonators on opposite sides, merging multiple components into one compact unit that achieves dual-polarization with improved orthogonality without proportionally increasing complexity.
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 configuration provides a compact dual-polarization antenna with improved orthogonality of radiation patterns, enabling a more efficient and compact dual-polarized antenna with a split-ring resonator.
Implementation Method 1
an antenna with a split-ring resonator is known as a compact antenna used in a wireless communication device
Implementation Method 2
orientations of electric fields in polarization directions thereof are substantially same as each other
Data Source
AI summary
An antenna includes antenna elements provided one by one on the respective sides of a substantially rectangular conductor plate. Each of the antenna elements includes a feeding wire and a split ring conductor having a shape in which a ring is partially cut by a split part. The feeding wire is electrically connected to the split ring conductor and extends in a direction across a region formed inside the split ring conductor. Two antenna elements provided on two arbitrary sides facing each other of the conductor plate among the four antenna elements are each supplied with power through the feeding wire included in each antenna element so as to have substantially the same direction of an electric field in a polarization direction.