Excitation Radiator Feed Patch Antenna for Thin Enclosures
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Solution Overview
Problem
Electronic devices face challenges in antenna placement due to space constraints within enclosures, leading to increased enclosure thickness and specific absorption rate (SAR) issues, which can result in overheating, and require additional material and production steps for aesthetic metal finishes.
Innovation Solution
The implementation of shorted patch antennas with excitation radiator feeds, which provide extended feeding length and reduced antenna height, and the use of extension arms to minimize size while supporting multiple resonances, allowing for improved radiation efficiency and reduced SAR without the need for extra plastic windows or metal finishes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If traditional antenna placement methods are used, then antenna functionality is achieved, but enclosure thickness increases
Solution Approach 1:
The patent transitions from traditional vertical antenna placement to a horizontal planar configuration using patch antennas integrated into the enclosure surface. This dimensional change allows the antenna to function within the enclosure's footprint rather than increasing its thickness, effectively resolving the contradiction between maintaining thin enclosure and achieving reliable antenna placement.
2Object-affected harmful factors
If traditional antenna placement is used, then antenna functionality is achieved, but SAR issues and overheating occur
Solution Approach 1:
The patent introduces a dielectric layer as an intermediary between the patch antenna and the enclosure metal surface. This dielectric mediator provides electrical isolation and thermal management, reducing SAR issues and preventing overheating while maintaining antenna functionality, thus resolving the contradiction between harmful factors and placement efficiency.
3Shape
If additional material and production steps are used for aesthetic metal finishes, then appearance quality improves, but manufacturing complexity and cost increase
Solution Approach 1:
The patent merges the antenna structure with the enclosure aesthetic surface by integrating the patch antenna directly into the metal enclosure or cover assembly. The antenna elements are designed to be visually indistinguishable from or complementary to the metal finish, eliminating the need for separate aesthetic components and reducing manufacturing complexity while maintaining appearance quality.
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 solution enables more efficient antenna placement, reducing enclosure thickness, minimizing SAR, and avoiding additional material costs and production steps, while maintaining a metallic appearance without extra base thickness or SAR issues.
Implementation Method 1
an excitation radiator feed situated to provide electromagnetic coupling between the excitation radiator feed and the patch
Implementation Method 2
The antennas enable communication of electronic devices with wireless networks and satellite navigation systems
Data Source
AI summary
Examples of a patch antenna are described herein. Some examples of the patch antenna include a parallelepipedal antenna holder. In some examples, a first excitation surface is situated on a first side of the antenna holder, where a second side opposite the first side is situated on a metal plane. A grounding surface is situated on a third side between the first side and the second side. An excitation radiator feed is situated to provide electromagnetic coupling between the excitation radiator feed and the first excitation surface.