Antenna Element With Capacitive And Inductive Elements For Mobile Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The integration of metal elements in mobile devices for aesthetic purposes often interferes with the operation of antennas, degrading communication quality and limiting design space due to the suppression of antenna design areas, especially in devices with large displays and narrow borders.
Innovation Solution
A communication device with a ground metal element and an antenna element comprising multiple metal elements, capacitive elements, an inductive element, and a signal feeding source, which allows for efficient operation across multiple frequency bands by distributing resonant currents uniformly and minimizing capacitively-coupled effects, enabling independent tuning of frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If metal elements are incorporated into mobile devices for aesthetic purposes, then appearance quality is improved, but antenna operation is interfered with and communication quality is degraded
Solution Approach 1:
The antenna structure is divided into multiple metal elements (first metal element, second metal element, third metal element) with distinct functions. Each element is segmented to perform specific roles in the resonant circuit, allowing the antenna to maintain aesthetic metal components while achieving proper electromagnetic operation through distributed segmentation of functional elements.
Solution Approach 2:
Capacitive elements and inductive elements are introduced as intermediary components between the metal elements. These intermediaries mediate the electromagnetic interactions, enabling the metal elements to function as intended without directly interfering with each other's operation, thus resolving the conflict between aesthetic metal appearance and reliable antenna communication.
2Shape
If large display and narrow border design is adopted, then device modernity is improved, but antenna design space is suppressed
Solution Approach 1:
The antenna design transitions from planar two-dimensional layout to three-dimensional spatial configuration. By utilizing vertical stacking and spatial arrangement of metal elements in multiple dimensions, the antenna achieves sufficient design space within the constrained area, enabling modern narrow-border device design while maintaining adequate antenna functionality.
Solution Approach 2:
Multiple metal elements are nested or closely integrated within a compact structure. The first, second, and third metal elements are arranged in a nested configuration that maximizes the use of available space, allowing the antenna to function properly within the reduced design area imposed by large display and narrow border requirements.
3Adaptability or versatility
If multiple frequency bands are covered, then communication versatility is improved, but antenna structure complexity increases
Solution Approach 1:
The antenna structure is designed with universal metal elements that can operate across multiple frequency bands. The first, second, and third metal elements form a multi-functional resonant circuit that can support both first operation frequency band and second operation frequency band, achieving frequency versatility without requiring separate antenna structures for each band.
Solution Approach 2:
The antenna achieves multi-frequency operation by adjusting electromagnetic parameters such as capacitance and inductance values rather than changing the physical structure. By modifying the parameters of capacitive elements and inductive elements, the same antenna structure can resonate at different frequencies, covering multiple frequency bands while maintaining structural simplicity.
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 solution achieves efficient operation across wideband frequencies, such as WLAN 2.4 GHz/5 GHz, with improved antenna efficiency and impedance matching, suitable for various mobile communication devices, offering small size, wide bandwidth, and low profile designs.
Implementation Method 1
The first connection point is coupled through the first capacitive element to the third metal element. The second connection point is coupled through the second capacitive element to the ground metal element.
Implementation Method 2
The third connection point is coupled through the inductive element to the third metal element.
Implementation Method 3
The antenna element includes a first metal element, a second metal element, a third metal element, a first capacitive element, a second capacitive element, an inductive element, and a signal feeding source.
Data Source
AI summary
A communication device includes a ground metal element and an antenna element. The antenna element includes a first metal element, a second metal element, a third metal element, a first capacitive element, a second capacitive element, an inductive element, and a signal feeding source. A first connection point of the first metal element is coupled through the first capacitive element to the third metal element. A second connection point of the first metal element is coupled through the second capacitive element to the ground metal element. A third connection point of the second metal element is coupled through the inductive element to the third metal element. A shorting end of the third metal element is coupled to the ground metal element. The signal feeding source is coupled between the first metal element and the third metal element or the ground metal element.