Wearable Antenna Coupling Structure for Rotating Smart Glasses Temples
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable electronic devices with integrated antennas face reliability issues due to the rotational motion of temple portions, leading to potential damage and instability in wireless communication functions.
Innovation Solution
The antenna is separated from the hinge and connected via a coupling terminal, allowing for non-contact power feeding and stable electrical signal transmission, ensuring reliable operation despite rotational motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antenna elements are separately arranged in each portion of the wearable electronic device to secure installation space, then the antenna can be installed, but reliability is difficult to secure due to rotational motion of the temple portion causing damage to components adjacent to the hinge
Solution Approach 1:
The antenna system is divided into two separate antenna elements: a first antenna element disposed in the temple portion and a second antenna element disposed in the lens frame portion. This segmentation allows each antenna element to be independently positioned away from the hinge, avoiding the reliability issues caused by rotational motion while still providing complete wireless communication coverage through the combined operation of both elements.
2Adaptability or versatility
If the temple portion is rotatably connected to allow folding and unfolding, then wearability and adaptability are improved, but components arranged adjacent to the hinge are damaged due to rotational motion
Solution Approach 1:
The antenna elements are extracted from the hazard zone near the hinge. The first antenna element is positioned in the temple portion away from the hinge, and the second antenna element is positioned in the lens frame portion, both at locations that are not affected by the rotational motion of the hinge, thus eliminating the damage caused by folding and unfolding operations.
3Reliability
If the antenna is connected through contact-based electrical connection near the hinge, then electrical signal transmission is achieved, but damage occurs due to hinge operation
Solution Approach 1:
A flexible printed circuit board (FPC) is introduced as an intermediary connection medium between the antenna elements and the main circuit board. The FPC can accommodate the rotational motion of the hinge through its flexibility, maintaining electrical signal transmission while avoiding the damage that would occur with rigid contact-based connections near the hinge area.
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 design reduces antenna damage and maintains stable wireless communication performance by separating the antenna from the hinge and using non-contact power feeding, enhancing the service life and reliability of wearable electronic devices.
Implementation Method 1
a feeder configured to apply an electrical signal to the first antenna through the coupling terminal
Data Source
AI summary
A wearable electronic device may comprise: a lens frame configured to accommodate a lens; a front frame including a connection frame extending from the lens frame; a temple rotatably connected to the connection frame and configured to rotate about a rotary shaft, and to operate to be in a first state of being folded to form a first angle with respect to the lens frame or a second state of being unfolded to form a second angle with respect to the lens frame; a printed circuit board disposed in the temple, and on which a wireless communication circuit is disposed; and an antenna structure including an antenna electrically connected to the wireless communication circuit. The antenna structure may comprise: a coupling terminal disposed at an end of the temple at which the rotary shaft is located; a first antenna disposed on the front frame and including a first connection portion having at least a portion of a surface facing the coupling terminal; and a feeder configured to apply an electrical signal to the first antenna member through the coupling terminal. The coupling terminal may comprise: a first terminal portion configured to be coupled to the first connection portion in the first state; and a second terminal portion configured to be coupled to the first connection portion in the second state.