Antenna Module Dual Coupling Layout for Broad Low-Band Coverage
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Solution Overview
Problem
The challenge of designing an antenna structure that can transmit and receive multiple wireless frequency bands efficiently within the limited internal space of electronic devices, such as notebook computers, due to their miniaturization and narrow screen frames.
Innovation Solution
The implementation of a dual coupling path antenna module with a feeding radiation element, a switching circuit, and a radiating element, separated and coupled in specific configurations, allowing for broader bandwidth performance through the switching circuit's dual signal transmission paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna size is reduced to fit the limited internal space of miniaturized electronic devices, then the device can be made thinner and more compact, but the antenna bandwidth decreases and becomes insufficient
Solution Approach 1:
The antenna is divided into multiple separate radiating elements (first radiating element, second radiating element, third radiating element) that are spatially separated but electromagnetically coupled. This segmentation allows each element to contribute to different frequency bands, enabling the compact antenna to achieve broad bandwidth coverage despite the reduced overall size.
Solution Approach 2:
Multiple radiating elements are arranged in a nested or layered configuration within the limited space, with elements positioned at different heights and orientations. This nesting approach maximizes the use of available three-dimensional space, allowing the antenna to maintain multiple resonant frequencies and broad bandwidth while fitting within a compact form factor.
2Adaptability or versatility
If multiple wireless frequency bands are supported in the limited internal space, then the antenna must handle multiple frequencies, but the antenna efficiency decreases due to space constraints
Solution Approach 1:
Each radiating element is designed with specific local characteristics (different lengths, orientations, and positions) optimized for particular frequency ranges. The first radiating element, second radiating element, and third radiating element have distinct geometries that resonate at different frequencies, allowing the antenna system to efficiently cover multiple bands without compromising the performance at any individual frequency.
Solution Approach 2:
The antenna elements are arranged in three-dimensional space with variations in height, orientation, and spatial positioning. By utilizing the vertical dimension and different angular orientations, the antenna achieves multi-frequency operation without increasing the planar footprint, thereby maintaining efficiency across multiple bands within the constrained internal space.
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 module achieves a broader bandwidth performance in the low frequency range, covering 617 MHz to 960 MHz, while maintaining medium and high frequency characteristics, thus addressing the efficiency issues in limited space.
Implementation Method 1
The radiating element and the first radiating portion are separated from and coupled with each other
Implementation Method 2
The floating radiation element and the radiating element are separated from and coupled to each other
Data Source
AI summary
An electronic device includes a housing and an antenna module. The antenna module is disposed in the housing. The antenna module includes a feeding radiation element, a switching circuit, a radiating element, and a floating radiation element. The feeding radiation element is electrically connected to a feeding element. The feeding radiation element includes a first radiating portion. The radiating element is electrically connected to the switching circuit. The radiating element and the first radiating portion are separated from and coupled with each other. The floating radiation element and the radiating element are separated from and coupled to each other. The floating radiation element and the switching circuit are separated from each other.