3D Antenna with Perpendicular Branches for Miniaturized Broadband Wireless Modules
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Solution Overview
Problem
Designing a miniaturized, high-efficiency, broadband, and low-cost antenna for small wireless modules is challenging due to impedance bandwidth limitations in smart home applications, where diverse product sizes and internal structures complicate customization of wireless modules.
Innovation Solution
A single, integrally formed miniaturized broadband antenna with dual radiation branches and a feed pin, where the radiation body comprises two branches extending in perpendicular directions, allowing for broadband operation by adjusting resonant frequencies, and can be easily fabricated and assembled on a small circuit substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a miniaturized antenna is designed for small wireless modules, then the size is reduced and assembly convenience is improved, but the impedance bandwidth is limited
Solution Approach 1:
The antenna transitions from a planar two-dimensional structure to a three-dimensional structure by bending the radiation body at a first angle and the feed pin at a second angle. This spatial configuration allows the antenna to achieve broadband impedance matching while maintaining a compact footprint on the circuit substrate, effectively resolving the contradiction between miniaturization and bandwidth.
Solution Approach 2:
The radiation body is divided into multiple segments including a first radiation branch and a second radiation branch connected at a junction point. This segmentation allows independent optimization of each branch's electrical length and impedance characteristics, enabling broadband operation within a miniaturized structure.
2Reliability
If customization is performed for each product's wireless module, then the antenna performance is optimized for specific applications, but manufacturing complexity and cost increase
Solution Approach 1:
The antenna is designed with universal mounting features including a mounting hole and ground connection structure that can be adapted to various circuit substrates and product types. The standardized interface allows the same antenna design to be used across different smart home devices, eliminating the need for custom antenna designs for each product while maintaining optimal performance through the inherent broadband characteristics of the 3D structure.
Data Source
AI summary
An antenna includes a radiation body and a feed pin. The radiation body includes a first radiation branch and a second radiation branch. The first radiation branch extends along a first direction. The second radiation branch extends along a second direction. The feed pin extends outward from the radiation body along a third direction. The first direction is perpendicular to the second direction and the third direction.