Foldable Housing Antenna With Segmented Frame for Low-Band Coverage
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Solution Overview
Problem
Conductive members in electronic devices, used as antennas, face limitations in covering various low frequency bands due to slimming trends, resulting in degraded radiation performance when frequency shifts occur.
Innovation Solution
An electronic device design incorporating a foldable housing with conductive and non-conductive portions arranged in sequence, featuring variable elements and feeders to adjust electrical paths, allowing the antenna to operate effectively across a wide range of low frequency bands without performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electronic device is slimmed down using conductive members, then the device thickness is reduced, but the antenna cannot cover various low frequency bands and radiation performance degrades
Solution Approach 1:
The conductive member is divided into multiple conductive portions (first conductive portion, second conductive portion, third conductive portion) separated by non-conductive portions. This segmentation allows each conductive portion to function as an independent antenna element, enabling coverage of multiple frequency bands while maintaining the slim device profile.
Solution Approach 2:
The patent utilizes the spatial arrangement of segmented conductive portions along the length of the conductive member to create multiple resonant frequencies. By controlling the positions, lengths, and spacing of each segment, the antenna system achieves multi-band coverage in a one-dimensional linear structure, effectively adding frequency dimensionality without increasing device thickness.
2Adaptability or versatility
If the conductive member is segmented by multiple non-conductive portions, then the antenna can cover various low bands, but the device complexity increases
Solution Approach 1:
The patent combines the antenna function with the structural conductive member (bezel or frame) of the device. The conductive portions that form the antenna are integrated into the device's exterior housing, eliminating the need for separate antenna components. This merging approach reduces overall device complexity despite the segmented antenna structure.
Solution Approach 2:
The conductive member serves dual purposes: it provides structural support as part of the device housing and functions as the antenna system. The same conductive portions that form the device frame also serve as radiating elements, allowing a single component to fulfill multiple functions and reducing overall system complexity.
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
Enables the antenna to maintain radiation performance across a wide frequency range, from 750 MHz to 1200 MHz, by selectively feeding the conductive portions and using impedance matching, ensuring efficient communication in various low band frequencies.
Implementation Method 1
The antenna may be utilized as a radiator by feeding a unit conductive portion of the conductive member electrically insulated by a pair of non-conductive portions spaced at a given interval
Implementation Method 2
the segment between conductive members may be filled with a non-conductive dielectric material and may be used as an insulation part for electrically disconnecting a specific location of the conductive member
Implementation Method 3
a first variable element including a first terminal electrically connected to the first electrical path, a second terminal electrically connected to the ground layer, and a third terminal electrically connected to a first position of the second conductive portion
Data Source
AI summary
An electronic device is provided. The electronic device includes a foldable housing including, a hinge structure, a first housing structure including a first surface, a second surface, and a first side member, wherein the first side member encloses at least a portion of a space between the first surface and the second surface and includes a first conductive portion, a first non-conductive portion, and a second conductive portion, and a second housing structure including a third surface, a fourth surface, and a second side member, a printed circuit board, at least one wireless communication circuit including a first electrical path and a second electrical path, a first variable element including a first terminal, a second terminal, and a third terminal, and a second variable element including a fourth terminal, a fifth terminal, and a sixth terminal.