Antenna Structure With Shielding For Pen Input Device
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Solution Overview
Problem
The existing antenna structures in pen input devices suffer from electromagnetic interference, poor contact stability, and susceptibility to damage, leading to suboptimal performance in data communication between electronic devices and pen input devices.
Innovation Solution
An antenna structure is designed with a first conductive portion between the pen housing and the printed circuit board, a second conductive portion extending along the board in a different direction, and a third conductive portion extending along the board in yet another direction, with the printed circuit board partially disposed between the second and third conductive portions, enhancing communication efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antenna is installed in an EMR type pen input device considering positions of electronic components and circuit components, then communication between electronic device and pen input device can be established, but optimal antenna performance cannot be realized due to electromagnetic interference between electronic components and antenna or between circuit components and antenna
Solution Approach 1:
A shielding structure is introduced as an intermediary element between the antenna and electronic components/circuit components. This shielding structure acts as a mediator that blocks electromagnetic interference while allowing the antenna to maintain its communication function, thus resolving the contradiction between establishing communication and avoiding electromagnetic interference.
Solution Approach 2:
The pen input device is segmented into distinct functional zones: an antenna region, an electronic component region, and a shielding region. By dividing the device structure into separate segments with clear functional boundaries, the antenna can operate optimally without interference from other components while still maintaining overall device functionality.
2Reliability
If a mechanism including an antenna is fixed in a pen housing, then the antenna can be positioned for communication, but poor contact may be caused between the mechanism and circuit components due to unstable fixation
Solution Approach 1:
The antenna mechanism is merged with the pen housing structure through integrated fixation features. The shielding structure serves dual purposes: it provides electromagnetic shielding and simultaneously acts as a stable mounting structure for the antenna, ensuring both contact stability and fixation stability without requiring separate complex fixation mechanisms.
3Ease of manufacture
If a flexible antenna is assembled with a pen housing, then the antenna can be installed for communication, but the conductive pattern may be damaged such as punctured, torn, or folded during assembly
Solution Approach 1:
The shielding structure serves as a protective intermediary during the assembly process. It provides a rigid framework that guides the flexible antenna into its correct position without subjecting the conductive pattern to damaging forces such as puncturing, tearing, or folding, thus enabling easy assembly while preserving antenna integrity.
Solution Approach 2:
The shielding structure is installed beforehand to create a protected assembly environment. This pre-installed shielding structure acts as a cushioning framework that prevents direct contact between the flexible antenna and sharp edges or rigid components that could cause damage during subsequent assembly operations.
Data Source
AI summary
One or more embodiments disclosed herein relate to an electronic device antenna structure, and may provide an electronic device that includes a pen housing including a first end part, a second end part, and inner space; a printed circuit board (PCB) located in the inner space; and an antenna structure. The antenna structure may include a first conductive part located between the pen housing and the first surface of the PCB; a second conductive part electrically connected to the first conductive; and a third conductive part electrically connected to the first conductive part. At least one part of the PCB may be arranged between the second conductive part and the third conductive part when the first surface of the PCB is viewed from an upper surface thereof. Additional other embodiments can be provided.