Coplanar Dual-Polarized Antenna Layout for Multi-Band Space Saving
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Solution Overview
Problem
Conventional dual-polarized antennas are complex, costly, and require significant space due to their multi-layer structure, limiting their application in electronic devices that need to cover multiple frequency bands.
Innovation Solution
A multi-band dual-polarized antenna design featuring a first radiator with 90° rotationally symmetric feeding ports and a coplanar annular second radiator, with an annular gap between them, allowing for dual-polarized radiation across multiple frequency bands on a single plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional multi-layer dual-polarized antenna structure is used, then dual-polarized radiation and multi-band coverage are achieved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The patent merges multiple radiating elements and feeding structures onto a single planar substrate, combining what would traditionally require multiple layers into one integrated structure. The first and second radiators with their respective feeding ports are all disposed on the same plane, eliminating the need for complex multi-layer stacking while maintaining multi-band dual-polarized radiation capability.
Solution Approach 2:
The single-plane antenna structure serves multiple functions simultaneously: it provides dual-polarized radiation through orthogonally oriented radiators, achieves multi-band coverage through resonant structures of different sizes, and maintains compact form factor. The annular first radiator and linear second radiator work together to cover multiple frequency bands including 2.4 GHz and 5 GHz Wi-Fi bands.
2Adaptability or versatility
If a conventional multi-layer dual-polarized antenna structure is used, then dual-polarized radiation and multi-band coverage are achieved, but manufacturing cost increases
Solution Approach 1:
By combining all radiating elements, feeding ports, and grounding structures onto a single planar substrate, the patent eliminates the need for complex multi-layer lamination, alignment, and bonding processes. This single-plane construction significantly simplifies manufacturing operations and reduces production costs while maintaining full multi-band dual-polarized functionality.
3Adaptability or versatility
If a conventional multi-layer dual-polarized antenna structure is used, then dual-polarized radiation and multi-band coverage are achieved, but space requirements increase
Solution Approach 1:
The patent transitions from a three-dimensional multi-layer structure to a two-dimensional single-plane structure. By arranging all radiating elements and feeding ports on the same plane with optimized spatial relationships, the antenna achieves compact footprint while maintaining multi-band dual-polarized radiation capability through careful positioning and sizing of radiating structures.
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 design reduces complexity and cost while significantly reducing space requirements, enabling wide application in electronic devices by supporting multiple frequency bands with improved signal quality and coverage.
Implementation Method 1
a first radiator 201 with a rotationally symmetric structure and a second radiator 202 with a rotationally symmetric structure... to ensure multi-frequency coverage... to ensure a dual-polarized radiation characteristic of the antenna
Data Source
AI summary
A multi-band dual-polarized antenna includes a first radiator and a second radiator, each having a rotationally symmetric structure. The first radiator has two feeding ports that are 90° rotationally symmetric with respect to a geometric center of the first radiator. The second radiator is annular, the first radiator and the second radiator are coplanar, the first radiator is disposed in the second radiator, and an annular gap is provided between the first radiator and the second radiator.