Mobile Device Antenna Structure Using Metal Frame Integration
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Solution Overview
Problem
The incorporation of metal elements in mobile devices negatively affects the antennas used for wireless communication, degrading the overall communication quality.
Innovation Solution
A novel antenna structure comprising a ground element, metal frame, feeding connection element, radiation elements, capacitive element, and shorting elements, which forms resonant paths to cover specific frequency bands while minimizing the impact of the metal frame on communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal elements are incorporated into mobile devices to improve appearance and structural robustness, then device appearance and strength are improved, but antenna performance and communication quality deteriorate
Solution Approach 1:
The patent merges the metal frame structure with the antenna system by using the metal frame itself as part of the antenna structure. The metal frame is configured to work cooperatively with radiation elements and grounding elements, transforming from a harmful interference source into a functional antenna component. This integration allows the device to maintain structural robustness while achieving effective wireless communication functionality across multiple frequency bands.
Solution Approach 2:
The patent converts the harmful effect of metal elements on antenna performance into a beneficial contribution. By strategically positioning radiation elements, grounding elements, and shorting elements in relation to the metal frame, the design utilizes the metal frame's electrical properties to enhance antenna performance. The metal frame, which would normally cause interference, becomes an integral part of the resonant structure that improves communication quality.
2Shape
If metal elements are incorporated into mobile devices to improve appearance, then device appearance is improved, but antenna performance and communication quality deteriorate
Solution Approach 1:
The patent merges the aesthetic metal frame with the functional antenna system. The metal frame serves dual purposes: maintaining device appearance and providing structural support for the antenna elements. Radiation elements, grounding elements, and shorting elements are integrated with the metal frame to create a unified structure that satisfies both aesthetic and communication requirements.
Solution Approach 2:
The metal frame performs multiple functions simultaneously: it provides structural support, maintains device appearance, and acts as part of the antenna system. By configuring the metal frame with specific geometric relationships to radiation and grounding elements, the design enables the frame to contribute to electromagnetic radiation across multiple frequency bands while preserving device aesthetics.
3Adaptability or versatility
If a comprehensive antenna structure is designed to cover multiple frequency bands, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated structure. The metal frame, radiation elements, grounding elements, and shorting elements work together as one unified antenna system that covers multiple frequency bands (including GPS L1/L2, WLAN 2.4GHz, and 5GHz bands). This integration eliminates the need for separate antenna structures for different frequency bands, thereby reducing overall device complexity while maintaining broad communication versatility.
Solution Approach 2:
The antenna structure is designed with multi-functionality to handle various communication protocols across different frequency bands. The same basic structure—comprising the metal frame, radiation elements, grounding elements, and shorting elements—supports GPS, WLAN, and other wireless communications simultaneously. This universal design approach allows the device to achieve broad adaptability without proportionally increasing structural complexity.
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 antenna structure effectively covers frequency bands from 1575 MHz to 5850 MHz, supporting GPS and WLAN operations without degrading the device's robustness or appearance, offering improved communication quality and bandwidth.
Implementation Method 1
an inverted F-shaped resonant path is formed by the feeding connection element, the first radiation element, the second radiation element, the capacitive element, the metal frame, and the second shorting element. The inverted F-shaped resonant path is excited to generate the first frequency band
Data Source
AI summary
A mobile device includes a ground element, a metal frame, a feeding connection element, a first radiation element, a second radiation element, a capacitive element, a first shorting element, a second shorting element, and a third shorting element. The first radiation element is coupled to the feeding connection element. The second radiation element includes a first portion and a second portion. The feeding connection element is coupled through the second radiation element to the metal frame. The capacitive element is coupled between the first portion and the second portion. The first shorting element, the second shorting element, and the third shorting element are coupled between the metal frame and the ground element. An antenna structure is formed by the ground element, the metal frame, the feeding connection element, the first radiation element, the second radiation element, the capacitive element, the first shorting element, and the second shorting element.