Coupled Antenna Elements for Multi-Band Electronic Housings
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Solution Overview
Problem
Existing electronic devices face challenges in implementing antennas with varying electrical lengths due to space constraints, particularly when multiple devices are connected or operated independently, limiting their ability to transmit and receive signals effectively across different frequency bands.
Innovation Solution
The electronic device comprises a first device with a first antenna element and a second device with a second antenna element, which are connected to form a third antenna element with a combined electrical length, allowing for signal transmission and reception in a second frequency band, and the ground members are electrically connected to enhance the antenna performance by forming a stable ground region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antennas with various electrical lengths are implemented in each device, then communication capability across different frequency bands is improved, but device complexity and mounting space requirements increase
Solution Approach 1:
The patent combines antenna elements from multiple devices to form a composite antenna structure. When devices are coupled, antenna elements from different devices are electrically connected to create an extended antenna with a longer electrical length, enabling communication in lower frequency bands without requiring each individual device to contain all necessary antenna elements.
Solution Approach 2:
The antenna elements are designed to serve multiple functions: they can operate independently as individual antennas when devices are separated, or combine to form a longer antenna when devices are coupled. This multi-functionality allows the same physical structure to adapt to different communication scenarios and frequency bands.
2Adaptability or versatility
If antenna electrical length is extended to cover low band frequencies, then frequency coverage is improved, but mounting space requirements increase
Solution Approach 1:
The patent extends the antenna structure from a single-device dimension to a multi-device dimension. By coupling multiple devices together, the effective antenna length is extended across the spatial dimension, achieving longer electrical length for low band frequencies without increasing the mounting space within each individual device.
3Reliability
If ground layers are expanded to improve antenna performance, then communication stability is improved, but device area and complexity increase
Solution Approach 1:
The ground layers from multiple devices are electrically connected when devices are coupled, forming an expanded and more stable ground structure. This combined ground layer provides better reference potential and improves antenna performance without requiring each individual device to have a large ground layer.
Data Source
AI summary
Disclosed is an electronic device. The electronic device according to an embodiment may include a first device and a second device that are coupled to each other or spaced from each other. The first device may include a first housing, a first antenna element having a first electrical length for transmitting or receiving a signal in a first frequency band, a communication circuit disposed inside the first housing and for transmitting and receiving the signal of the first antenna element, and a first ground member electrically connected to the first antenna element. The second device may include a second antenna element having a second electrical length, a second housing, and a second ground member disposed inside the second housing. The first antenna element and the second antenna element may be connected to each other, and operate as a third antenna element having a third electrical length for transmitting and receiving a signal in a second frequency band while the first device and the second device are connected to each other. The first ground member and the second ground member may be electrically connected to each other while the first device and the second device are connected to each other. In addition, various embodiments as understood from the specification are also possible.