Foldable Wireless Housing Layout for GPS Antenna Isolation
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Solution Overview
Problem
Existing wireless communication devices face challenges in maintaining the characteristics of Global Positioning System (GPS) antennas while ensuring the performance of other antennas, such as WWAN and WLAN antennas, due to spatial and structural limitations.
Innovation Solution
A wireless communication device design featuring a metal housing with recessed areas for antenna placement, minimizing the influence of conductive materials on antenna performance and optimizing antenna arrangement to achieve desired characteristics across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple antennas are arranged in a compact wireless communication device, then device integration is improved, but antenna characteristics and signal quality deteriorate due to mutual interference and limited space
Solution Approach 1:
The device body is divided into two separate housings (first housing and second housing) connected by a hinge, allowing antennas to be distributed across different spatial zones. The GPS antenna is placed in the first housing while other antennas are positioned in the second housing, reducing mutual interference through physical segmentation of the device structure.
Solution Approach 2:
The patent utilizes the third dimension (depth/thickness) by creating recesses within the housing structures to accommodate antennas. This vertical dimensionality allows antennas to be positioned at different depths and locations without increasing the device's footprint, thereby maintaining compact integration while preserving antenna characteristics through optimized spatial arrangement.
2Device complexity
If GPS antenna is positioned near metal housing, then device structure is simplified, but signal reception quality deteriorates due to electromagnetic interference from conductive materials
Solution Approach 1:
The GPS antenna is extracted from the general antenna arrangement zone and specifically positioned in the first housing, separated from other antennas located in the second housing. This extraction isolates the GPS antenna from potential electromagnetic interference sources, allowing it to maintain optimal signal reception characteristics while the device maintains a unified metal housing structure for structural simplicity.
Solution Approach 2:
The patent applies different spatial quality characteristics to different regions of the device. The first housing contains the GPS antenna in a location optimized for satellite signal reception, while the second housing contains other antennas in positions optimized for their respective functions. This local optimization ensures that each antenna operates in its most favorable electromagnetic environment despite the presence of metal housing.
3Volume of moving object
If antennas are arranged in limited space, then device size is reduced, but signal attenuation and noise susceptibility increase
Solution Approach 1:
By segmenting the antenna system across two separate housings, the patent effectively increases the available volume for antenna placement without increasing the device's external dimensions. The hinge connection allows the housings to be positioned at angles that maximize the distance between antennas, reducing signal attenuation and noise susceptibility while maintaining a compact folded form factor.
Solution Approach 2:
The patent exploits the dimensional space created by the hinge joint, allowing antennas to be arranged in three-dimensional space rather than being constrained to a single plane. This enables optimal spacing between antennas while keeping the device compact when folded, thereby reducing signal attenuation without increasing the device's footprint.
Data Source
AI summary
A wireless communication device includes a first housing having a rectangular plate shape, a second housing having a rectangular plate shape, a connection portion that connects the first housing and the second housing, and a first GPS antenna. The first housing has an end edge having a rectangular shape, and the end edge includes a first end edge connected to the connection portion, a second end edge facing the first end edge, a third end edge connected to the first end edge and the second end edge, and a fourth end edge facing the third end edge. A first recess and a second recess are formed in the second end edge, a third recess is formed between a center of the third end edge in a longitudinal direction and the second end edge, and at least a part of the first GPS antenna is arranged in the third recess.