Dielectric Substrate Antenna for Camera Wireless Communication
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Solution Overview
Problem
Antennas installed inside cameras struggle to efficiently transmit information due to being surrounded by metallic cases and conductive electronic circuit boards, limiting the spatial area for wireless communication and potentially leading to inaccurate or restricted information transfer.
Innovation Solution
The development of an antenna device featuring a substrate made of dielectric material with symmetrical antenna and ground elements, connected via through holes, and integrated into a printed-wiring board, which allows for effective electromagnetic wave propagation by minimizing interference from the camera's metallic casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the antenna is installed inside the camera surrounded by metallic case and conductive circuit board, then the device integration is improved, but the wireless communication performance deteriorates due to limited spatial area and signal interference
Solution Approach 1:
The patent transitions from a planar antenna design to a three-dimensional folded antenna structure. The antenna element is folded along multiple lines to create a spatial configuration that occupies different dimensional spaces, effectively increasing the electrical length and radiation efficiency within the constrained internal volume of the camera device.
Solution Approach 2:
The antenna element is designed with a nested folded structure where multiple segments are arranged in a compact, space-efficient configuration. This nesting approach allows the antenna to fit within the limited space inside the camera while maintaining sufficient effective area for wireless communication.
2Device complexity
If the antenna is surrounded by metallic case and conductive portions, then the device structure is simplified, but the electromagnetic wave propagation is hindered causing inaccurate information transfer
Solution Approach 1:
The patent introduces a dielectric substrate as an intermediary between the antenna element and the conductive circuit board. This dielectric layer acts as a mediator that allows electromagnetic waves to propagate from the antenna while reducing direct interference and signal loss caused by the surrounding conductive structures and metallic case.
Solution Approach 2:
The patent applies different material properties to different regions: the antenna element uses conductive material for signal transmission, the substrate uses dielectric material for electromagnetic wave support and isolation, and the ground element uses conductive material for reference potential. This local differentiation of material qualities optimizes each component's function while minimizing overall interference.
3Ease of manufacture
If a conventional planar antenna is used on the circuit board, then the manufacturing process is simple, but the communication range is limited due to the small effective area
Solution Approach 1:
The patent transforms the two-dimensional planar antenna into a three-dimensional folded structure by introducing fold lines that create vertical and lateral extensions. This dimensional transformation increases the effective radiating area and communication spatial coverage while maintaining compatibility with standard PCB manufacturing processes.
Solution Approach 2:
The folded antenna structure creates dynamic spatial distribution of the electromagnetic field by extending in multiple directions and planes. This dynamic configuration allows the antenna to effectively utilize the three-dimensional space around the camera, expanding the communication range beyond what a flat planar antenna could achieve.
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
This configuration enhances communication performance by reducing propagation loss and enabling reliable wireless communication within the 2.4 GHz to 2.5 GHz frequency range, improving the transmission of electromagnetic waves outside the camera casing.
Implementation Method 1
enables reliable wireless communication within the 2.4 GHz to 2.5 GHz frequency range, improving the transmission of electromagnetic waves outside the camera casing
Data Source
AI summary
A disclosed antenna device includes a substrate made of a dielectric material, an antenna element formed on one side of the substrate, and a ground element formed on another side of the substrate.