Nested Antenna Module Layout for Compact Multi-Band Devices
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Solution Overview
Problem
The challenge is to design an antenna structure that can efficiently transmit and receive multiple wireless frequency bands within the limited internal space of electronic devices, such as laptops and tablets, while maintaining good antenna efficiency.
Innovation Solution
The proposed solution involves an antenna module with a first radiating element and a second radiating element, where the first radiating element forms an L-shaped structure and the second radiating element includes a hook-shaped structure. The first radiating element is disposed on the periphery of the second radiating element, and the hook-shaped structure is positioned farther away from the first arm than the second branch, optimizing antenna characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna structure is simplified to fit limited internal space, then device compactness is improved, but antenna bandwidth and multi-frequency capability deteriorate
Solution Approach 1:
The antenna module is divided into two independent radiating elements (first and second radiating elements) with distinct geometric structures. The first radiating element features an L-shaped configuration with arms of different lengths, while the second radiating element has a hook-shaped structure with multiple sections. This segmentation allows each element to be optimized for specific frequency ranges, enabling multi-band operation within a compact volume.
Solution Approach 2:
Different portions of the antenna structure are designed with locally optimized characteristics. The first radiating element's arms have different lengths to resonate at different frequencies, while the second radiating element's hook-shaped structure with varying section lengths provides additional frequency coverage. This local quality variation enables the compact antenna to achieve broad frequency band adaptability.
2Shape
If the screen frame is narrowed to improve device aesthetics, then device appearance is improved, but antenna performance and bandwidth deteriorate
Solution Approach 1:
The two radiating elements are arranged in a nested configuration where the first radiating element is positioned on the periphery of the second radiating element. This nesting allows both elements to coexist within a compact footprint, maintaining effective antenna performance while accommodating narrow screen frame requirements for improved device appearance.
Solution Approach 2:
The antenna elements utilize three-dimensional spatial arrangement rather than simple planar expansion. The L-shaped and hook-shaped structures extend in multiple dimensions, maximizing the use of available internal space without increasing the device's external dimensions or compromising screen frame design.
3Adaptability or versatility
If multiple radiating elements are added to cover more frequency bands, then frequency coverage is improved, but device complexity and space consumption increase
Solution Approach 1:
Multiple radiating elements are merged into a single integrated antenna module with a unified feeding structure. The first and second radiating elements share common mounting space and are fed through a combined feeding mechanism, reducing overall structural complexity while maintaining multi-frequency coverage capabilities.
Solution Approach 2:
The antenna module is designed as a universal structure that can operate across multiple frequency bands simultaneously. The geometric configurations of both radiating elements are optimized to provide broad frequency coverage, making the single antenna module capable of performing multiple communication functions without requiring separate specialized antennas for each band.
Data Source
AI summary
An electronic device includes a housing, an antenna module, and a feeding element. The antenna module includes a first radiating element and a second radiating element. The first radiating element includes a first arm and a second arm. The second radiating element includes a first radiating portion and a feeding portion. The first radiating portion includes a first section, a second section and a third section. The feeding portion is connected to the first section, the first section includes a first branch and a second branch, and the second section is connected between the first branch and the third section. The first branch, the second section, and the third section jointly form a hook-shaped structure. The first radiating element is disposed on a periphery of the second radiating element. The hook-shaped structure is farther away from the first arm than the second branch.