Cross-Shaped Patch Antenna Layout for Compact Millimeter-Wave Gain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High gain antennas for the millimeter wave band face challenges such as size, mass, and cost limitations, as well as significant radio wave loss due to moisture, necessitating a compact and efficient design for satellite communication and integration in module form.
Innovation Solution
A high gain planar circularly polarized antenna with a cross-shaped conductor and radiator units arranged in a 90-degree configuration on a substrate, including main and auxiliary radiators, parasitic elements, and a cross-shaped slot, which enhances directivity and gain while minimizing size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a high gain antenna structure with air gap or large size is used, then gain is improved, but volume and mass increase
Solution Approach 1:
The patent transitions from three-dimensional high gain structures (horn antennas, air gap configurations) to a planar two-dimensional patch antenna design. The cross-shaped conductor and radiator units are arranged on a flat substrate, eliminating the need for vertical height while achieving high gain through optimized in-plane geometry and circular polarization characteristics
Solution Approach 2:
The antenna is divided into multiple functional segments: a cross-shaped conductor at the center, four radiator units positioned at specific orientations, and parasitic elements strategically placed around the perimeter. This segmentation allows each component to contribute specifically to gain enhancement while maintaining a compact overall footprint
2Power
If millimeter wave band antennas are designed for high gain, then communication performance is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent integrates multiple functions into a single planar structure: the cross-shaped conductor serves as both the feed structure and polarization control element, while the radiator units simultaneously achieve radiation and impedance matching. This merging of functions simplifies manufacturing compared to multi-component 3D structures, enabling standard PCB fabrication techniques to be used for millimeter wave band antennas
3Volume of moving object
If antenna size is reduced for module integration, then integration is improved, but gain may be reduced
Solution Approach 1:
The patent optimizes specific geometric parameters of the planar structure to maximize gain within a compact footprint. The cross-shaped conductor arms, radiator unit dimensions, and parasitic element positions are carefully tuned to achieve resonant frequencies and impedance characteristics that enhance gain. The 90-degree orientation of radiator units creates circular polarization that improves radiation efficiency in all directions, compensating for the reduced size
Data Source
AI summary
A high gain patch antenna and a method of manufacturing the same are provided. The antenna includes a substrate with a flat structure including a dielectric, a cross-shaped conductor arranged at a center of an upper part of the substrate, and radiator units arranged in each of four areas divided by the cross-shaped conductor on the upper part of the substrate, wherein each of the radiator units may be arranged to have a 90-degree difference from an adjacent radiator unit with respect to a center of the substrate.