Antenna Segmentation in Electronic Device Bezel
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Solution Overview
Problem
In miniaturized electronic devices, such as mobile communication terminals, it is challenging to arrange various types of antennas without causing electromagnetic interference, especially when operating frequencies of adjacent antennas differ by only a few hundred MHz, due to space constraints and the need for sufficient distance between radiating conductors.
Innovation Solution
The electronic device incorporates a housing with a side bezel structure featuring conductive and insulative portions, including a first and second conductive portion, a first insulative portion, and a second conductive pattern, which form capacitive coupling with the conductive portions to reduce electromagnetic interference while securing multiple operating frequencies, allowing for stable wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are arranged in a miniaturized electronic device, then wireless communication functions are enhanced, but electromagnetic interference between antennas increases
Solution Approach 1:
The device segments the housing into multiple conductive portions (first conductive portion, second conductive portion) that function as separate antennas. Each conductive portion is electrically isolated from the other through insulative portions, allowing multiple wireless communication functions to coexist while minimizing electromagnetic interference between them.
Solution Approach 2:
Insulative portions are introduced as intermediary elements between the first and second conductive portions. These insulative portions act as electromagnetic shields or barriers that reduce coupling and interference between adjacent antennas, enabling stable wireless communication across multiple frequency bands despite close proximity.
2Volume of moving object
If antennas are placed closer together to reduce device size, then device miniaturization is achieved, but electromagnetic interference between adjacent antennas increases
Solution Approach 1:
The antenna structure is nested within the housing itself, where conductive portions of the housing serve as antennas. This nesting approach eliminates the need for separate antenna components, achieving miniaturization while the insulative portions provide electromagnetic isolation to prevent interference between nested antenna elements.
Solution Approach 2:
Insulative portions are strategically positioned between adjacent conductive antenna portions to act as electromagnetic intermediaries. These intermediaries reduce mutual coupling and interference, allowing antennas to be placed closer together for device miniaturization without sacrificing wireless communication performance.
3Ease of operation
If conductive portions are arranged adjacent to each other to save space, then device compactness is improved, but electromagnetic coupling between antennas increases
Solution Approach 1:
The housing is segmented into distinct conductive portions that function as independent antennas. Each conductive portion is separated by insulative portions, creating electrically isolated segments that can be arranged compactly without excessive electromagnetic coupling, thus achieving both compactness and functional independence.
Solution Approach 2:
Different portions of the housing have different electromagnetic properties - conductive portions serve as antennas while insulative portions provide electromagnetic isolation. This local differentiation of material properties allows adjacent antenna elements to coexist with minimal coupling, enabling compact arrangement while maintaining signal integrity.
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 enables stable wireless communication across multiple frequency bands by minimizing electromagnetic interference between adjacent antennas, facilitating the miniaturization of electronic devices while maintaining effective wireless communication performance.
Implementation Method 1
a second conductive pattern disposed between the second position and the third position when viewed from the outside of the side bezel structure and electrically connected to the ground layer
Data Source
AI summary
An electronic device according to various embodiments of the present invention can comprise: a housing comprising a front plate, a rear plate which faces the opposite direction from the front plate, and a lateral bezel structure which surrounds a space between the front plate and rear plate, and the side bezel structure comprises a first conductive part, a second conductive part and a first insulating part formed between the first conductive part and second conductive part; a printed circuit board which is disposed inside the housing and comprises at least one ground layer electrically connected in a first position of the first conductive part adjacent to the first insulating part; a first conductive pattern which is electrically connected in a second position of the first conductive part further away from the first insulating part than the first position, and is disposed between the first position and second position when seen from the outside of the lateral bezel structure; a first wireless communication circuit which is electrically connected in a second position and transmits and receives a first signal having a first frequency, and is electrically connected in a third position of the second conductive part and transmits and receives a second signal having a second frequency; a second conductive pattern which is disposed between the second position and third position when seen from the outside of a lateral member, and is electrically connected to the ground layer; and a second wireless communication circuit which is electrically connected in the second position and receives a third signal having a third frequency, and is electrically connected in the third position and receives a fourth signal having a fourth frequency. Various other embodiments may be possible.