Antenna Device Isolation Space for Display Signal Efficiency
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Solution Overview
Problem
In thin and lightweight display devices, the integration of high or ultra-high frequency antennas is challenging due to signal loss and interference from adjacent conductive structures, requiring an antenna design that enhances signaling efficiency and reliability while minimizing space.
Innovation Solution
The antenna device features a dielectric layer with a radiation pattern, a signal pad, and a ground pad having a recessed structure with an isolation space greater than the signal pad, which effectively shields noise and prevents self-radiation interference, ensuring improved signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conductive structures are disposed at the same layer in a limited area, then the antenna device can be integrated in thin display devices, but signal loss occurs due to mutual noise and interference
Solution Approach 1:
The patent transitions from planar arrangement to three-dimensional vertical stacking, placing the radiation pattern, signal pad, and ground pad at different heights (different z-dimensions) rather than at the same layer. This vertical separation eliminates mutual interference while maintaining compact footprint, resolving the contradiction between thin device integration and signal efficiency.
Solution Approach 2:
The patent introduces a dielectric layer as an intermediary between the radiation pattern and the ground pad. This dielectric medium provides electrical isolation and prevents direct interference between conductive structures, enabling close proximity arrangement without signal loss, thus achieving both compact size and high signal efficiency.
2Reliability
If the isolation space length is greater than the signal pad length, then noise shielding and signal efficiency are improved, but the ground pad occupies more area
Solution Approach 1:
The patent utilizes the vertical dimension to provide isolation space between the signal pad and ground pad. By separating these elements in the z-direction (different layers) rather than requiring large lateral separation, the design achieves effective noise shielding and signal efficiency improvement without significantly increasing the planar footprint of the ground pad.
Data Source
AI summary
An antenna device according to an embodiment of the present invention includes a dielectric layer, a radiation pattern disposed on a top surface of the dielectric layer, a signal pad electrically connected to the radiation pattern, and a ground pad spaced apart from the signal pad and having an isolation space. A length of the isolation space is greater than a length of the signal pad.