Antenna Structure With Shared Extension Grounding Unit
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Solution Overview
Problem
Conventional miniature antenna units suffer from poor directivity due to narrow directional coverage, leading to suboptimal wireless signal transmission and reception.
Innovation Solution
The antenna structure incorporates a microwave substrate with a main-antenna unit, a sub-antenna unit, and an extension grounding unit, which includes a first and second extension grounding portion, allowing for adjustable radiation patterns and improved directivity, while sharing the extension grounding unit to reduce physical size and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional miniature antenna units are used, then the device size is reduced, but the antenna directivity deteriorates
Solution Approach 1:
The antenna unit is divided into multiple independent radiating elements (first antenna element, second antenna element, third antenna element, fourth antenna element) arranged in a specific geometric configuration. Each element contributes to the overall radiation pattern, enabling improved directivity control while maintaining a compact form factor through distributed rather than centralized radiation structures.
Solution Approach 2:
The patent transitions from conventional planar or linear antenna arrangements to a three-dimensional spatial configuration with elements positioned at different heights and orientations. The specific geometric arrangement of elements in multiple dimensions creates constructive and destructive interference patterns that enhance directivity in desired directions while suppressing radiation in others, achieving better directional performance within a small volume.
2Adaptability or versatility
If multiple antenna units are used to improve directivity, then the antenna performance is improved, but the physical size and manufacturing cost increase
Solution Approach 1:
Multiple radiating elements are merged into a single integrated antenna unit structure where all elements share common supporting components, grounding structures, and mounting mechanisms. This consolidation achieves the directivity benefits of multiple elements while avoiding the proportional increase in physical size and manufacturing complexity that would result from treating them as separate antenna units.
Solution Approach 2:
The antenna unit is designed with multi-functional elements that serve multiple purposes: the same structural components provide mechanical support, electrical grounding, and radiation functions. The geometric arrangement of elements enables the structure to achieve directional control while the shared components reduce the overall part count and simplify manufacturing processes compared to multiple independent antenna units.
Data Source
AI summary
An antenna structure includes a microwave substrate, a main-antenna unit, an extension grounding unit. The main antenna unit is arranged on the surface of the microwave substrate. The main antenna unit includes a main-radiation portion, a main-feeding portion, a main-grounding portion. The extension grounding unit is arranged on the surface of the microwave substrate. The extension grounding unit includes a first extension grounding portion and a second extension grounding portion. The antenna structure can adjust the radiation pattern and improve the antenna directivity. The main-antenna unit and the sub-antenna unit share the extension grounding unit in common. So, the antenna structure can reduce the antenna occupied volume and save the mass production cost.