Transparent Antenna Layout With Ground Shielding for Window Visibility
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Solution Overview
Problem
Existing antenna devices integrated into printed circuit boards are typically light-tight, obstructing the user's view when mounted in windows, and suffer from external signal interference.
Innovation Solution
The antenna device features a transparent substrate with light-transmitting areas between antenna units, allowing visibility through the device, and incorporates a ground electrode design that reduces external signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna device is integrated into a printed circuit board, then the antenna function is achieved, but the device becomes light-tight and blocks the user's view
Solution Approach 1:
The printed circuit board is designed with a honeycomb structure containing multiple through-holes that allow light to pass through. This porous configuration enables the board to maintain its mechanical strength and antenna functionality while permitting visible light transmission, thus resolving the contradiction between reliability and illumination intensity.
Solution Approach 2:
The patent employs a composite structure combining transparent materials for the board substrate with conductive materials for the antenna elements. This composite approach allows the device to simultaneously achieve electromagnetic signal processing capability and optical transparency, addressing both the antenna function requirement and the light transmission need.
2Illumination intensity
If the printed circuit board is made transparent to allow viewing, then light transmission is improved, but external signal interference increases
Solution Approach 1:
The antenna elements are strategically positioned and configured within specific regions of the transparent board, with optimized geometries and orientations that enhance signal reception while minimizing susceptibility to external interference. This localized optimization allows the board to maintain transparency while protecting against harmful electromagnetic factors.
3Reliability
If the antenna elements are densely arranged to improve signal reception, then antenna performance is enhanced, but the light-transmitting area is reduced
Solution Approach 1:
The antenna system is divided into multiple discrete elements distributed across the board surface, with each element optimized for specific signal characteristics. This segmentation allows efficient use of space for signal reception while maintaining adequate light-transmitting areas between the elements, resolving the contradiction between signal reception quality and light transmission area.
Data Source
AI summary
An antenna device includes a transparent substrate and a plurality of antenna units disposed on the transparent substrate. The transparent substrate has a first surface and a second surface opposite to the first surface. A light-transmitting area is provided between adjacent antenna units. Each antenna unit includes an antenna electrode, a ground electrode, a redistribution structure, and a chip. The antenna electrode is disposed on the first surface of the transparent substrate. The ground electrode is disposed on the second surface of the transparent substrate. A width of the ground electrode in a first direction is greater than a width of the antenna electrode in a first direction. The redistribution structure is coupled to the antenna electrode. The ground electrode is located between the redistribution structure and the transparent substrate. The chip is bonded to the redistribution structure.