Folded Dipole Antenna in Multi-Layer Wireless Module
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Solution Overview
Problem
Existing wireless communication modules face challenges in minimizing size while maintaining uniform radiation characteristics, as conventional antennas do not efficiently utilize space and often have directional radiation limitations.
Innovation Solution
A folded dipole antenna configuration is integrated into a multi-layered module body, where the antenna is situated circumferentially around a circuit region, utilizing standard circuit board processes to connect dipole halves through vias, allowing for compact design and uniform radiation in all directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional antenna is used in a wireless communication module, then the module can achieve wireless communication function, but the module size cannot be minimized and radiation characteristics are not uniform
Solution Approach 1:
The antenna is configured in a folded form across multiple levels (first level and second level) of the module body, transitioning from a planar to a three-dimensional structure. This dimensional change allows the antenna to surround the circuit region circumferentially, achieving uniform radiation characteristics while minimizing the footprint area and overall module volume.
Solution Approach 2:
The folded dipole antenna is integrated into the multi-layered module structure, with the antenna conductors nested within the available space between and across the circuit board layers. The antenna structure is embedded within the module body, utilizing the vertical space between levels to achieve compact configuration without compromising radiation performance.
2Reliability
If the antenna is configured to surround the circuit region to achieve uniform radiation, then radiation characteristic uniformity is improved, but the device complexity increases
Solution Approach 1:
The antenna is divided into two separate dipole halves, with each half situated on a different level of the module body. This segmentation allows the antenna to be constructed using standard multi-layer circuit board techniques, where each dipole half can be independently formed on its respective level and connected through vias, simplifying the manufacturing process despite the three-dimensional configuration.
Solution Approach 2:
The folded dipole antenna structure serves multiple functions: it provides omnidirectional radiation characteristics, utilizes the vertical space between module levels, and can be manufactured using standard PCB processes. The same circuit board structure that provides mechanical support and electrical interconnection also serves as the antenna substrate, eliminating the need for separate antenna components.
3Volume of moving object
If the antenna is configured in folded form across multiple levels, then space utilization is optimized and module size is minimized, but manufacturing complexity increases
Solution Approach 1:
The antenna is divided into two separate dipole halves, with each half situated on a different level of the module body. This segmentation allows the antenna to be constructed using standard multi-layer circuit board techniques, where each dipole half can be independently formed on its respective level and connected through vias, simplifying the manufacturing process despite the three-dimensional configuration.
Solution Approach 2:
The circuit board structure itself serves as the antenna substrate, eliminating the need for separate antenna components and their associated assembly processes. The conductive traces and vias that provide electrical interconnection between circuit components also form the antenna structure, allowing the manufacturing process to produce both the circuit board and antenna simultaneously in a single integrated structure.
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
The solution enables the production of small-form-factor wireless communication modules with uniform radiation characteristics, optimizing space usage and improving radiation efficiency compared to conventional antennas.
Implementation Method 1
A folded dipole can take the form of an antenna that has a conductor loop having a specified length... Wireless communication can be understood as a transmission of electric magnetic waves
Implementation Method 2
the first dipole half and the second dipole half being connected to one another in electrically conductive fashion by a first via and a second via through the at least one layer of the module body
Data Source
AI summary
A module for wireless communication includes: a module body which (i) is plate-shaped, has (ii) a structure having a plurality of layers, and (iii) has a circuit region; and a folded dipole which is situated circumferentially around the circuit region and has a first dipole half situated in a first level of the module body, and a second dipole half situated in a second level of the module body. The first dipole half and the second dipole half are separated by a layer of the module body, and are connected to one another in electrically conductive fashion through a first via and a second via extending through the layer.