Conductive Casing Antenna Structure for Metal Shell Interference
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Solution Overview
Problem
In electronic devices with metal shells, the limited configuration space makes it difficult to design antennas that are not influenced by the metal shell, leading to impaired signal transmission and reception.
Innovation Solution
The electronic device integrates a first casing and a second casing with conductive materials, connected through a feeding unit and a connecting unit, forming an antenna structure that allows for electromagnetic signal transmission and reception without the need for an additional antenna, by optimizing the placement of these units to avoid interference from the metal shell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional antenna is configured in the electronic device with metal shell, then wireless communication function is achieved, but the metal shell interferes with the antenna signal transmission and reception
Solution Approach 1:
The patent merges the antenna function with the existing metal casing structure by making the first and second casings conductive and electrically connected through a connecting unit. The feeding unit provides electromagnetic signal input to these conductive casings, which then function as antenna elements. This eliminates the need for separate additional antennas while utilizing the existing structural components for dual purposes: mechanical protection and electromagnetic radiation.
Solution Approach 2:
The first and second casings serve multiple functions: they provide mechanical structural support and protection for internal components, while simultaneously acting as antenna elements for wireless communication when made conductive and properly configured. The connecting unit that mechanically joins the casings also serves as an electrical conductor to complete the antenna structure. This multi-functionality resolves the contradiction by making the metal shell beneficial rather than harmful.
2Reliability
If the antenna is disposed at a peripheral portion of the display screen to avoid metal shell interference, then signal transmission is improved, but the configuration space for the antenna is limited and design difficulty increases
Solution Approach 1:
Instead of placing a separate antenna at the periphery, the patent combines the antenna function with the main body casings. The first and second casings themselves become the antenna elements through proper electrical connection and signal feeding, eliminating the need for separate antenna components and complex peripheral positioning.
Solution Approach 2:
The casings serve dual purposes as both structural components and antenna elements. By making the casings conductive and configuring them with proper electrical connections through the feeding unit and connecting unit, the entire device body becomes part of the antenna system, greatly simplifying the overall design and configuration.
3Reliability
If the first casing and second casing are made conductive and connected to form an antenna structure, then additional antenna interference is avoided, but the device structure becomes more complex
Solution Approach 1:
The patent combines multiple functions into existing components: the connecting unit that mechanically joins the casings also provides electrical conduction for the antenna function. The feeding unit integrates the signal source and distribution network. This merging approach avoids adding separate antenna components while achieving the desired electromagnetic functionality.
Solution Approach 2:
The conductive casings and connecting structures serve multiple purposes: mechanical support, structural integrity, and antenna radiation elements. By configuring existing structural components to perform both mechanical and electromagnetic functions, the patent avoids increasing device complexity while improving signal transmission capability.
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 the signal transmission and reception ability of the device, covering the required frequency bands for wireless communication without additional antenna interference, as demonstrated by the dipole and slot antenna configurations achieving high radiation efficiency.
Implementation Method 1
the electronic device forms an antenna structure with the first casing, the second casing, the first connecting unit and the feeding unit and delivers an electromagnetic signal via the feeding unit
Data Source
AI summary
An electronic device including a first casing, a second casing, at least one first connecting unit and at least one feeding unit is provided. The first casing includes a conductive material. The second casing includes a conductive material. The first casing and the second casing are conducted with each other through the first connecting unit. The feeding unit is electrically connected to the first casing and the second casing, wherein the electronic device forms an antenna structure with the first casing, the second casing, the first connecting unit and the feeding unit and transmits an electromagnetic signal via the feeding unit.