Mobile Terminal Metal Frame Antenna Radiation Space
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Solution Overview
Problem
Mobile terminals face challenges in securing sufficient antenna radiation space, leading to performance degradation due to interference between electric fields and the need for additional antenna patterns, which increases the size of the device.
Innovation Solution
A mobile terminal design that incorporates a metal frame with strategically placed conductive patterns and slots, utilizing the side members and base plate to enhance ground radiation and prevent interference, allowing for efficient antenna performance even when held in hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are provided to support multiple frequency bands, then communication functionality is improved, but antenna radiation space becomes insufficient and electric field interference occurs
Solution Approach 1:
The patent divides the antenna system into multiple independent antenna patterns (first antenna pattern and second antenna pattern) that operate at different frequency bands. Each antenna pattern is spatially separated and oriented differently to reduce mutual interference, allowing multiple frequency bands to be supported within the same device form factor.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by positioning antenna patterns at different locations and orientations within the terminal body. The first antenna pattern is arranged in a first direction while the second antenna pattern is arranged in a second direction different from the first, effectively using spatial dimensions to accommodate multiple antennas without increasing the device's footprint.
2Reliability
If antenna radiation space is secured, then antenna performance is improved, but device size increases due to widened bezels or separate antenna patterns
Solution Approach 1:
The patent integrates the antenna patterns directly into the terminal body structure, combining the antenna functions with the existing device housing and internal components. This merging approach allows antenna radiation elements to be positioned within the device without requiring additional external space or widened bezels.
Solution Approach 2:
The patent arranges antenna patterns in three-dimensional space within the terminal body, utilizing vertical and lateral positioning to create sufficient radiation space without increasing the device's external dimensions. The first and second antenna patterns are positioned at different heights and orientations inside the device.
3Adaptability or versatility
If antenna patterns are arranged to support multiple frequency bands, then frequency band coverage is improved, but electric field distribution interference occurs between antennas
Solution Approach 1:
The patent employs asymmetric arrangement of antenna patterns where the first antenna pattern and second antenna pattern are positioned and oriented differently relative to each other. This asymmetric configuration prevents symmetric coupling and reduces mutual interference between the antenna patterns operating at different frequency bands.
Solution Approach 2:
The patent segments the antenna system into distinct, spatially separated antenna patterns with different orientations. The first antenna pattern operates in a first direction while the second antenna pattern operates in a second direction, creating electrical isolation that minimizes interference between frequency band operations.
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 design secures improved antenna radiation space and maintains consistent wireless communication performance by maximizing ground radiation and minimizing interference, thus preventing performance degradation when the device is used.
Implementation Method 1
A mobile terminal design that incorporates a metal frame with strategically placed conductive patterns and slots, utilizing the side members and base plate to enhance ground radiation
Data Source
AI summary
The present invention relates to a mobile terminal comprising: a terminal body having first to fourth sides; a metal frame comprising a base plate located in the interior of the body of the terminal, first and second side members distanced from the base plate and exposed to the exterior of the terminal body, and a slit located on the first side of the terminal body and distanced from a first end part of a first side member and a first end part of a second side member; and a printed circuit board located in the interior of the terminal, wherein the first side member is located on one part of the first side end and second side, the printed circuit board comprises a first power unit, a second power unit, a first conductive pattern connected to the first power unit; and a second conductive pattern connected to the second power unit, wherein the first conductive pattern is directly connected to the first side member, and the second conductive pattern is not directly connected to the second side member.