Slidable PCBA Antenna Volume Reduction
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Solution Overview
Problem
Conventional mobile broadband devices have a large volume due to the fixed placement of antennas, which affects portability without compromising performance.
Innovation Solution
The antenna and Printed Circuit Board Assembly (PCBA) are designed to be slidably connected within a casing, allowing the PCBA to retract into the antenna's hollow space when not in use, reducing the device's volume while maintaining performance by maintaining electrical connection through a contact point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is fixedly set on an end of the casing and set in parallel to the PCBA, then the antenna performance is protected (not shielded by PCBA), but the device volume increases and portability is affected
Solution Approach 1:
The PCBA is designed to be slidable relative to the antenna, transitioning between a retracted position (where it occupies space within the antenna's projection area) and an extended position (where it extends beyond the antenna). This dynamic positioning allows the device to achieve compact volume when the PCBA is retracted while maintaining proper antenna-PCBA separation when extended, thus resolving the contradiction between compact volume and antenna performance protection.
2Reliability
If the antenna individually occupies a large part of space to ensure performance, then the antenna performance is maintained, but the device cannot be miniaturized for better portability
Solution Approach 1:
The slidable PCBA structure enables dynamic space utilization. When the PCBA is retracted into the hollow space formed by the antenna's projection, the overall device volume is minimized, enhancing portability. When extended, the PCBA maintains sufficient separation from the antenna for optimal performance. This dynamic adjustment allows the device to adapt between compact storage and functional states.
Data Source
AI summary
The present invention provides a mobile broadband device, and relates to the field of communications technologies. The mobile broadband device includes a casing, a Printed Circuit Board Assembly (PCBA), and an antenna. The antenna and the PCBA are both set in the casing, and the PCBA can be slidably pulled out or retracted back along the casing. The antenna is fixedly set on an inner side of the casing and forms a hollow space for accommodating the retracted PCBA, there is a contact point set on the antenna, and the contact point is electrically connected to a feed point of the PCBA. With the mobile broadband device, the antenna does not individually occupy part of space in the casing without affecting the performance of the antenna; therefore, the volume and length of the mobile broadband device are effectively reduced, and the portability of the mobile broadband device is effectively improved.