NFC Antenna Conductive Structure With Gaps for Stronger Radiation
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Solution Overview
Problem
The challenge of enhancing radiation strength and improving radiation performance of NFC antennas in electronic devices, particularly in devices with limited internal space, is addressed by defining one or more gaps in the conductive structure of the antenna assembly to allow magnetic fields to penetrate and increase radiation intensity without occupying additional space.
Innovation Solution
The NFC antenna assembly includes a conductive structure with defined gaps that allow magnetic fields to radiate through these openings, enhancing radiation intensity and area without increasing the device's physical size, utilizing a conductive structure that forms a magnetic field and is connected to a near-field communication chip to transmit excitation current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the conductive structure is made solid without gaps, then the structural integrity is maintained, but the radiation strength and radiation performance are limited
Solution Approach 1:
The conductive structure is designed with gaps (porous configuration) that allow magnetic fields to penetrate through, enhancing radiation performance while maintaining structural integrity. The gaps create regions where magnetic flux can pass through, effectively increasing the radiation area without compromising the overall structural strength of the conductive element.
2Power
If the antenna assembly size is increased to improve radiation performance, then the radiation area is increased, but the device occupies more internal space
Solution Approach 1:
The invention transitions from a two-dimensional surface radiation model to a three-dimensional volumetric radiation model by introducing gaps that allow magnetic field penetration through the conductive structure. This dimensional change enables the magnetic field to radiate through the volume of the conductive structure itself, effectively increasing the radiation area without increasing the external dimensions of the antenna assembly.
3Power
If gaps are added to the conductive structure to enhance magnetic field penetration, then the radiation area is increased, but the structural complexity increases
Solution Approach 1:
The conductive structure is segmented into regions with gaps rather than being a continuous solid piece. This segmentation creates multiple radiation pathways for the magnetic field while maintaining each segment's structural integrity. The gaps are strategically positioned to maximize magnetic field penetration without requiring complex additional components or assembly steps.
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 improves the radiation performance and area of NFC signal transmission by allowing magnetic fields to penetrate through gaps in the conductive structure, increasing the effective read/write area and stability of NFC antennas in electronic devices.
Implementation Method 1
when the first conductive structure transmits the near-field communication excitation current, the first conductive structure generates a magnetic field, and the magnetic field generated by the first conductive structure is radiated to an outside through the one or more first gaps
Data Source
AI summary
Embodiments of the present application provide an antenna assembly and an electronic device. The antenna assembly comprises a near field communication chip and a first conductive structure; the first conductive structure is electrically connected to the near field communication chip to transmit near field communication excitation current supplied by the near field communication chip; the first conductive structure is provided with one or more first gaps; when the first conductive structure transmits the near field communication excitation current, the first conductive structure can generate a magnetic field, and the magnetic field generated by the first conductive structure can radiate to the outside by means of the first gaps.