Antenna Coupling Pattern Parasitic Resonance
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Solution Overview
Problem
Millimeter wave communication antennas face signal loss and interference due to harmonics components from low frequency bands, and the decreasing size of portable electronic devices poses challenges in accommodating antennas effectively.
Innovation Solution
The antenna apparatus incorporates a ground layer and antenna patches with a dielectric layer in between, featuring feed vias and a coupling pattern adjacent to the power supply line, which generates a parasitic resonance frequency matching the harmonics frequency of the low frequency band, thereby reducing interference with high frequency signals without increasing the antenna's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If millimeter wave antennas are used for high frequency communication, then communication speed and data rate are improved, but signal loss increases due to easy signal loss in high frequency bands
Solution Approach 1:
The patent utilizes the harmful harmonics components from low frequency bands and converts them into beneficial resonance frequencies for high frequency bands. The coupling pattern is designed to generate parasitic resonance at harmonics frequencies (e.g., 28 GHz from 14 GHz), which are then used as effective radiation signals for millimeter wave communication, thereby converting what was previously harmful interference into useful communication signals.
2Reliability
If low frequency antennas are used, then signal transmission is more stable, but harmonics components interfere with high frequency bands
Solution Approach 1:
The patent converts the harmful harmonics interference from low frequency bands into beneficial resonance frequencies for high frequency communication. By designing the coupling pattern to resonate at harmonics frequencies, the system transforms what was previously harmful interference into useful signals for millimeter wave bands, eliminating the need for complex filtering while maintaining signal stability.
3Reliability
If antenna size is increased to improve performance, then signal reception and transmission are improved, but the available area for antenna installation decreases due to increasing device screen size
Solution Approach 1:
The patent makes the coupling pattern serve multiple functions: it acts as both a grounding element and a resonant structure that generates parasitic resonance at harmonics frequencies. This multi-functionality allows the antenna system to achieve millimeter wave performance without requiring separate components, thereby maintaining compact size while improving signal reception and transmission quality.
Solution Approach 2:
The patent merges the coupling pattern with the grounding structure, combining what would traditionally be separate elements into a single integrated component. This merging reduces the overall antenna footprint while maintaining or enhancing performance, as the coupled pattern serves both as a ground reference and as the active resonant element for high frequency operation.
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 enhances the antenna's performance by reducing signal interference and allowing for multi-band RF signal transmission and reception, improving communication quality without enlarging the device.
Implementation Method 1
A resonance frequency caused by coupling of the power supply line and the coupling pattern may be matched with the second frequency band. The resonance frequency caused by the coupling of the power supply line and the coupling pattern may be a harmonics frequency of the first frequency band.
Data Source
AI summary
An antenna apparatus includes a ground layer and an antenna patch overlapping via a dielectric layer therebetween, a first feed via and a second feed via penetrating at least a portion of the dielectric layer, a power supply line connected to the first feed via, and a coupling pattern disposed adjacent to the power supply line and coupled with the power supply line.