Single-Layer Antenna Unit With Parasitic Patch for Broadband Isolation
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Solution Overview
Problem
The challenge of ensuring excellent broadband, high isolation, and high stability in antennas for ultra-thin electronic devices, particularly in the context of limited space and the need for millimeter-wave communication, is addressed by adopting a single-layer dielectric substrate with a parasitic patch and radiation patch configuration that utilizes electromagnetic induction for indirect coupling, reducing physical connections and interference.
Innovation Solution
The antenna unit employs a radiation assembly with a parasitic patch and radiation patch coupled via a feed structure, utilizing electromagnetic induction through a coupling gap, allowing for a single-layer dielectric substrate design that minimizes thickness, interference, and enhances stability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single-layer dielectric substrate is used to reduce thickness, then the device thickness is reduced, but achieving broadband and high isolation becomes more difficult
Solution Approach 1:
A parasitic patch is introduced as an intermediary element between the feed structure and the radiation patch. The parasitic patch is indirectly coupled to the feed structure through electromagnetic induction and couples to the radiation patch, enabling broadband operation and high isolation without requiring multiple dielectric layers
Solution Approach 2:
The patent replaces direct mechanical/physical connections with electromagnetic field-based coupling. The parasitic patch is indirectly connected to the feed structure through electromagnetic induction rather than direct physical contact, and couples to the radiation patch through electromagnetic coupling, reducing physical interference while maintaining performance
2Reliability
If multiple dielectric layers are used to achieve broadband and high isolation, then performance is improved, but the device thickness and manufacturing complexity increase
Solution Approach 1:
The parasitic patch serves as a mediator that enables complex electromagnetic interactions (broadband operation and isolation) to be achieved within a single dielectric layer, eliminating the need for multiple layers and reducing manufacturing complexity
Solution Approach 2:
The patent optimizes parameters such as the size, position, and shape of the parasitic patch and radiation patch to achieve broadband performance and high isolation. By adjusting these geometric parameters, the antenna achieves excellent performance with a single-layer structure, avoiding the need for complex multi-layer designs
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 configuration achieves miniaturization, broadband operation, high polarization isolation, and stable radiation patterns while reducing manufacturing complexity and cost, aligning with the thin and light development trend of electronic devices.
Implementation Method 1
at least one parasitic patch and at least one radiation patch; wherein the at least one parasitic patch is coupled to the at least one radiation patch
Data Source
AI summary
An antenna unit includes: a radiation assembly including at least one parasitic patch and at least one radiation patch; a dielectric layer including a layer of dielectric substrate; a floor layer; and at least one feed structure, wherein the radiation assembly is located on a top surface of the dielectric layer; the floor layer is located on a bottom surface of the dielectric layer; and the least one feed structure passes through the floor layer and the dielectric layer sequentially and is electrically connected to the at least one parasitic patch, and the at least one parasitic patch is coupled to the at least one radiation patch.