Foldable Antenna Layout With Switchable Electrical Length
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Solution Overview
Problem
The technical challenge lies in effectively arranging antennas within foldable electronic devices to maintain communication functionality while minimizing interference and optimizing space utilization during folding and unfolding states.
Innovation Solution
The electronic device incorporates a rotation shaft with a first body and a second body that are foldable/unfoldable, featuring a first metal member with a bent form as part of an antenna set and a second metal member grounded via a switch component to adjust electrical length, allowing for improved radiation performance and interference avoidance by matching/mismatching frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas are arranged in a foldable device with limited space, then space utilization is improved, but antenna performance and interference avoidance deteriorate
Solution Approach 1:
The antenna structure uses a switch component to dynamically adjust the electrical length of the second metal member, allowing the antenna to adapt its configuration based on operational requirements. This dynamic adjustment enables the antenna to maintain optimal performance despite the constrained space in the foldable device.
Solution Approach 2:
The patent changes the electrical length parameter of the antenna by using a switch component to connect or disconnect the second metal member. This parameter change allows the antenna to operate effectively in different frequency bands and maintain reliable communication functionality within the limited space of the foldable device.
2Reliability
If the electrical length of the antenna is adjusted to avoid interference, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The second metal member serves multiple functions: it can be connected to ground via the switch component to adjust electrical length for interference avoidance, or used as a parasitic element to improve radiation performance. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The switch component enables parameter changes in the antenna structure by connecting or disconnecting the second metal member, allowing adjustment of electrical length to avoid interference and maintain communication reliability without requiring complex additional components.
3Reliability
If the second metal member is used as a parasitic element to improve radiation performance, then antenna efficiency is improved, but frequency band adaptability decreases
Solution Approach 1:
The switch component enables dynamic reconfiguration of the antenna structure, allowing the second metal member to be connected or disconnected based on the required frequency band. This dynamic adjustment allows the antenna to adapt to different frequency bands while maintaining good radiation performance when the parasitic element configuration is used.
Solution Approach 2:
By changing the electrical connection state of the second metal member through the switch component, the antenna can adjust its electrical length and resonant frequency, enabling operation across different frequency bands. When connected, it improves radiation performance; when disconnected, it allows for different frequency band operation.
Data Source
AI summary
The present disclosure relates to an electronic device including a rotation shaft, a first body and a second body which are foldable or unfoldable in relation to each other around the rotation shaft. The first body has a first end surface facing away from the rotation shaft and a second end surface connected between the first end surface and the rotation shaft. A first metal member is provided on the first body, includes a first and second parts connected in such a manner that the first metal member has a bent form, and constitutes a radiator of a first antenna set. The first part is arranged on the first end surface. The second part is arranged on the second end surface. A second metal member is provided on the second body, is grounded via a first switch component configured to adjust an electrical length of the second metal member.