Foldable Antenna Patterns for Signal Integrity
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Solution Overview
Problem
The challenge is to design an electronic device with an antenna that minimizes space constraints and maintains radiation performance without being deteriorated by conductive materials, especially in compact and foldable structures where metal frames can block signals.
Innovation Solution
The electronic device features a foldable housing with separate antenna patterns in each housing part, connected by conductive members that electrically couple when folded, allowing for efficient use of internal space and maintaining antenna performance by adjusting the antenna length to prevent parasitic resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is located inside the electronic device housing, then the device structure is compact and integrated, but the metal frame of the housing distorts or blocks the signal, degrading antenna radiation performance
Solution Approach 1:
The antenna system is divided into multiple antenna patterns distributed across different housing parts. Each antenna pattern is electrically connected to conductive members on the housing surface, allowing the antenna function to be segmented across the entire housing structure rather than concentrated in one location, thereby avoiding signal degradation from any single metal frame portion.
Solution Approach 2:
The antenna patterns are formed on two-dimensional surfaces (PCB or housing surface) rather than using traditional three-dimensional wire antennas. This planar configuration allows the antenna to integrate seamlessly with the housing structure while maintaining radiation performance by distributing the antenna elements across the housing surface.
2Volume of moving object
If the antenna is located inside the electronic device housing, then the internal space is utilized, but the space available for antenna mounting becomes limited, especially when the device is reduced in size
Solution Approach 1:
The antenna system is divided into multiple antenna patterns distributed across different housing parts. Each antenna pattern is electrically connected to conductive members on the housing surface, allowing the antenna function to be segmented across the entire housing structure rather than concentrated in one location, thereby avoiding signal degradation from any single metal frame portion.
Solution Approach 2:
The housing structure serves multiple functions: it provides mechanical protection, structural support, and simultaneously acts as the antenna mounting surface through its conductive members. The conductive members on the housing surface serve both as structural elements and as antenna elements, eliminating the need for separate antenna mounting space.
3Adaptability or versatility
If the frequency band supported by the antenna is variable, then the antenna must support multiple frequency bands, but this requires a plurality of antennas or a complex-shaped antenna, further limiting the space inside the housing
Solution Approach 1:
The conductive members on the housing surface and the antenna patterns are designed to support multiple frequency bands through their geometric configuration and electrical connection. The same antenna structure can resonate at different frequencies by adjusting the conductive member dimensions and patterns, eliminating the need for separate antennas for different frequency bands.
Solution Approach 2:
The antenna system achieves multi-frequency band support by varying the geometric parameters of the conductive members and antenna patterns. By adjusting the size, shape, and configuration of the conductive members on the housing surface, the antenna can be tuned to operate across multiple frequency bands without requiring additional antenna elements.
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
This configuration enables efficient use of internal space and maintains antenna performance by preventing signal degradation from conductive materials, ensuring reliable communication across various frequency bands.
Implementation Method 1
the first conductive member and the second conductive member are electrically connected to or coupling with each other when the housing is folded in the second direction
Data Source
AI summary
According to various examples, an electronic device comprising: a housing, which is a foldable housing and includes a first housing part including a first surface and a second surface oppositely facing the first surface, a second housing part including a first surface facing the first surface of the first housing part when folded in a first direction, and a second surface facing the second surface of the first housing part when folded in a second direction, and a connection part connecting the first housing part and the second housing part; a communication circuit disposed inside the housing; a first antenna pattern disposed inside the first housing part; a second antenna pattern disposed inside the second housing part; a first display exposed to the first surface of the first housing part; a second display exposed to the first surface of the second housing part; a first conductive member exposed to the second surface of the first housing part, and electrically connected to the first antenna pattern; and a second conductive member exposed to the second surface of the second housing part, and electrically connected to the second antenna pattern, wherein the communication circuit is electrically connected to the first antenna pattern and/or the second antenna pattern, and the first conductive member and the second conductive member can be electrically connected or coupled with each other, when the housing is folded in the second direction.