Loop Antenna Structure for Metal-Mount Bandwidth Extension
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Solution Overview
Problem
Existing microstrip antennas face challenges in achieving both size reduction and performance improvement when mounted on metal surfaces, as the metal influence can deteriorate their performance, and increasing the thickness of the reflection plate and substrate to mitigate this effect often results in increased size.
Innovation Solution
The antenna device incorporates a dielectric layer with loop-shaped antenna elements and resonance elements inside, utilizing electromagnetic coupling and a reflection plate to reduce metal influence while maintaining size and enhancing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the reflection plate and substrate is increased to reduce metal influence, then the performance is improved, but the size of the antenna device increases
Solution Approach 1:
The patent changes the physical parameters of the antenna device by introducing a dielectric layer with specific permittivity between the antenna element and the metal surface. This parameter change allows the antenna to achieve desired performance without increasing the thickness of the reflection plate and substrate, thus resolving the contradiction between performance improvement and size reduction.
Solution Approach 2:
The dielectric layer acts as an intermediary between the antenna element and the metal surface. It mediates the interaction between the antenna and the metal, reducing the harmful influence of the metal on antenna performance while maintaining a compact size. The intermediary layer enables the antenna to operate effectively without requiring increased substrate or reflection plate thickness.
2Volume of moving object
If the antenna device is directly provided on a metal surface, then the size is reduced, but the performance deteriorates due to metal influence
Solution Approach 1:
The dielectric layer serves as an intermediary that protects the antenna element from the harmful influence of the metal surface. It allows the antenna to be mounted directly on the metal surface (maintaining small size) while preventing performance deterioration through the mediating effect of the dielectric material.
Solution Approach 2:
By changing the electrical parameters of the mounting structure through the introduction of a dielectric layer with specific permittivity, the patent enables direct mounting on metal surfaces without performance loss. The parameter change in the mounting structure allows simultaneous achievement of size reduction and performance maintenance.
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 both size reduction and performance improvement by extending the frequency bandwidth and maintaining desired gain without increasing the antenna's dimensions.
Implementation Method 1
the antenna element and the first resonance element are provided at an interval that allows electromagnetic coupling, and the first resonance element resonates at a predetermined frequency when electromagnetically coupled to the antenna element
Implementation Method 2
the first resonance element resonates at a predetermined frequency when electromagnetically coupled to the antenna element
Implementation Method 3
an antenna device including a dielectric layer including a dielectric... in order to address such a problem, efforts have been made to reduce the influence of the metal
Data Source
AI summary
An antenna device includes a dielectric layer having a dielectric, an antenna element that is located on a surface of the dielectric layer and that has a loop shape, a radio frequency input element configured to supply power to the antenna element, and at least one resonance element that is located inside the dielectric layer.