Artificial Magnet Conductor Thickness Calculation Using Phase Change
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Solution Overview
Problem
Existing artificial magnet conductors fail to accurately reflect electromagnetic waves at specific frequencies, leading to discrepancies between designed and actual frequency characteristics, resulting in reduced accuracy and effectiveness in broadband antenna applications.
Innovation Solution
An artificial magnet conductor is designed with a dielectric medium, featuring conductive patch and loop patterns arranged on a frequency selective surface, where the thickness of the dielectric medium is calculated using an expression that incorporates phase changes to achieve precise frequency characteristics, allowing for accurate reflection across multiple frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the thickness of the dielectric medium in an artificial magnet conductor is designed using conventional physical models, then the design process is simple, but the frequency characteristics of the produced reflection plate do not coincide with the designed frequency characteristics, resulting in reduced accuracy
Solution Approach 1:
The patent changes the calculation parameters for dielectric medium thickness by introducing a phase change amount parameter that accounts for the electromagnetic wave's phase shift within the dielectric layer. This parameter modification enables more accurate prediction of reflection frequency characteristics while maintaining a relatively simple calculation framework based on transmission line theory.
Solution Approach 2:
The patent implements a feedback mechanism in the design process by using electromagnetic field simulation to verify the frequency characteristics of the produced reflection plate and comparing them with the designed characteristics. This feedback loop allows for iterative optimization of the dielectric thickness to achieve better coincidence between designed and actual frequency characteristics.
2Reliability
If a conventional artificial magnet conductor design is used, then the structure is simple, but the reflection frequency characteristics do not match the design values, reducing effectiveness in broadband antenna applications
Solution Approach 1:
The patent modifies the design parameters by incorporating the phase change amount that occurs when electromagnetic waves propagate through the dielectric medium. This parameter change ensures that the reflection frequency characteristics accurately match the design values, thereby improving reliability in broadband antenna applications where precise frequency control is critical.
3Manufacturing precision
If the dielectric medium thickness is not accurately calculated, then the manufacturing process is straightforward, but the actual produced reflection plate exhibits frequency characteristics that deviate from design specifications
Solution Approach 1:
The patent changes the approach to thickness calculation by introducing a phase change compensation parameter. This allows for accurate determination of dielectric medium thickness that ensures the produced reflection plate's frequency characteristics coincide with design specifications, while still maintaining relative ease of manufacture through closed-form calculation expressions.
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
The solution enables an artificial magnet conductor with frequency characteristics closer to the design values, improving the accuracy and effectiveness of broadband antennas by ensuring accurate reflection across a range of frequencies, thereby enhancing antenna performance.
Implementation Method 1
a phase change from an incident wave to a reflected wave with respect to the dielectric medium is set as an addition value in which a first phase change in the gap is added to a second phase change between the basic cell of the dielectric medium and the conductive layer
Implementation Method 2
an artificial magnet conductor which reflects an electromagnetic wave in a specific frequency
Implementation Method 3
a low profile antenna which employs a structure of an artificial magnet conductor that is called an electromagnetic band gap (EBG) structure
Implementation Method 4
an artificial magnet conductor which is close to a complete magnetic body and has high surface impedance is formed
Data Source
AI summary
An artificial magnet conductor includes a dielectric medium, basic cells, each being formed on a side of a front surface of the dielectric medium, and including a conductive patch pattern and a conductive loop pattern formed with a predetermined gap with the conductive patch pattern, a frequency selective surface on which the basic cells are periodically arranged on the front surface of the dielectric medium, and a conductive layer formed on a side of a rear surface of the dielectric medium. A phase change from an incident wave to a reflected wave with respect to the dielectric medium is set as an addition value in which a first phase change in the gap is added to a second phase change between the basic cell of the dielectric medium and the conductive layer. A thickness of the dielectric medium is calculated using the addition value.