Metal Bezel Antenna Module With Slit Patch for Side Beam Coverage
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Solution Overview
Problem
Metal bezels in electronic devices can obstruct beam coverage on side surfaces while being used to reflect or block radiation, and their division to secure beam coverage affects the device's appearance, also posing challenges in forming antenna modules with multiple frequency bands.
Innovation Solution
The formation of a thin slit on a metal bezel to create a bezel patch and a bezel cavity, combined with a printed circuit board's conductive patterns, allows for an antenna module that maintains the device's appearance while enabling efficient antenna performance across various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal bezel is used to reflect or block radiation, then antenna performance is improved, but beam coverage on side surfaces is obstructed
Solution Approach 1:
The metal bezel is divided into multiple sections by forming slits, creating separate bezel patches. This segmentation allows different portions of the bezel to perform different functions: some patches maintain radiation reflection/blocking for antenna performance, while slits and separated patches enable beam coverage on side surfaces by allowing electromagnetic wave propagation through the previously continuous metal structure.
2Object-affected harmful factors
If the metal bezel is divided to secure beam coverage, then side surface beam coverage is improved, but the device's appearance is affected
Solution Approach 1:
The slits are positioned in specific locations on the metal bezel where they are less visually prominent, such as along edges or in areas already requiring design features. This local placement strategy allows beam coverage to be secured through strategic positioning rather than uniform division, minimizing visual impact while maintaining functional performance.
3Adaptability or versatility
If a bezel patch is separated through a bezel slit to form an antenna module, then multiple frequency bands are enabled, but the complexity of forming the antenna module increases
Solution Approach 1:
The separated bezel patches serve multiple functions: they act as both structural components of the metal bezel and as antenna elements for different frequency bands. The conductive patterns on the printed circuit board similarly serve dual purposes as both circuit traces and antenna radiating elements. This multi-functionality reduces the need for separate dedicated antenna structures, simplifying overall antenna module formation despite supporting multiple frequency bands.
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 solution ensures effective antenna performance without compromising the device's aesthetics and allows for multiple frequency bands, enhancing communication capabilities without visible impact on the metal bezel's appearance.
Implementation Method 1
a communication module configured to transmit or receive radio frequency signals using the separation bezel part, the first conductive pattern, and the second conductive pattern
Data Source
AI summary
Disclosed is an electronic device including a metal bezel including a bezel patch separated through a bezel slit, a printed circuit board including a first conductive pattern and a second conductive pattern, which are separated through a substrate slit and a communication module transmitting or receiving an antenna signal, using an antenna element including the bezel patch, the first conductive pattern, and the second conductive pattern. The first conductive pattern is connected to a part of the metal bezel. The bezel patch and the second conductive pattern is arranged to be aligned vertically. A bezel cavity is formed between the bezel patch and the second conductive pattern.