Multi-Layer Dielectric Antenna for Millimeter Wave Isolation
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Solution Overview
Problem
Millimeter wave communication antennas face challenges in maintaining communication quality due to high frequency bandwidth RF signals being easily absorbed, requiring a different technical approach for securing antenna gain and effective isotropic radiated power.
Innovation Solution
An antenna apparatus with multiple patch antenna patterns and feed vias on dielectric layers of varying dielectric constants, allowing for improved isolation and resonance across different frequency bandwidths, enabling efficient transmission and reception of RF signals while being easily downsized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If millimeter wave communication uses high frequency bandwidth RF signals, then data transmission capacity increases, but signal absorption and energy loss increase rapidly
Solution Approach 1:
The patent changes the dielectric constant parameter of the substrate material to optimize signal transmission. By selecting a substrate with a specific dielectric constant range (2.2-3.5), the antenna achieves better impedance matching and reduced signal loss at millimeter wave frequencies, directly addressing the energy loss problem while maintaining high data transmission capacity
Solution Approach 2:
The patent employs composite material structures including multiple dielectric layers with different dielectric constants, metal layers, and via structures. This composite approach allows optimization of both signal transmission efficiency and reduction of absorption losses by combining materials with complementary properties
2Volume of moving object
If antenna size is reduced for mobile devices, then device integration improves, but antenna gain and effective isotropic radiated power decrease
Solution Approach 1:
The patent utilizes via structures with optimized dimensions and dielectric materials with specific constants to enhance the electrical length and resonance characteristics of the compact antenna. This allows the small physical antenna to achieve higher gain and effective isotropic radiated power through parameter optimization rather than size increase
Solution Approach 2:
The patent transitions from planar antenna design to three-dimensional structures by incorporating via holes that extend vertically through multiple layers. This vertical dimension adds electrical length and radiation pathways without increasing the horizontal footprint, enabling high power performance in a compact form factor
3Adaptability or versatility
If multiple frequency bandwidths are supported, then communication versatility improves, but isolation between frequency bands becomes difficult to maintain
Solution Approach 1:
The patent divides the antenna structure into multiple patch elements and dielectric layers, each optimized for specific frequency ranges. The lower frequency patch and upper frequency patch are spatially and electrically segmented, allowing independent optimization while maintaining overall system performance and isolation between bands
Solution Approach 2:
The patent introduces dielectric layers and via structures as intermediary elements between different frequency patches. These intermediaries provide electromagnetic isolation and coupling control, enabling multiple frequency bands to operate simultaneously with minimal interference while maintaining versatility
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
Enhances gain and reduces energy loss across multiple frequency bandwidths by improving isolation and resonance, effectively addressing the absorption issues in millimeter wave communication.
Implementation Method 1
a first dielectric layer having a first dielectric constant; a first patch antenna pattern disposed in the first dielectric layer; a second dielectric layer having a second dielectric constant; a second patch antenna pattern disposed on the second dielectric layer; wherein the first dielectric constant is higher than the second dielectric constant
Data Source
AI summary
An antenna apparatus includes: a first dielectric layer having a first dielectric constant; a first patch antenna pattern disposed in the first dielectric layer; a second dielectric layer having a second dielectric constant; a second patch antenna pattern disposed on the second dielectric layer; a first feed via coupled to the first patch antenna pattern; and a second feed via coupled to the second patch antenna pattern. The first dielectric constant is higher than the second dielectric constant, and a frequency of a signal transmitted/received by the first patch antenna pattern is lower than a frequency of a signal transmitted/received by the second patch antenna pattern.