Frequency Selective Plate Miniaturization via Multi-Layer Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing frequency selective plates are limited in designability to any shape and size, particularly when used as reflection plates in antennas and radomes, due to the requirement that the outer peripheral size of the minimum unit cell must be equal to or longer than one wavelength associated with the operating frequency.
Innovation Solution
A frequency selective plate design that includes conductive closed loops on multiple layers, where the conductive patterns on different layers are electrically connected, allowing for the transmission of a predetermined frequency and reflection of other frequencies, enabling miniaturization of the operating unit cell and flexibility in shape and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ring-shaped elements are periodically disposed with outer periphery equal to one wavelength, then frequency selective function is achieved, but the minimum unit cell size cannot be smaller than one wavelength
Solution Approach 1:
The patent transitions from planar single-layer conductive patterns to three-dimensional multi-layer conductive patterns connected by via holes. This dimensional change allows the electromagnetic path to extend through the thickness direction, enabling the unit cell size to be smaller than one wavelength while maintaining the required electrical length for frequency selective functionality.
Solution Approach 2:
The patent embeds conductive patterns on multiple layers within a compact unit cell structure, with via holes nesting through the substrate to electrically connect different layers. This nested arrangement allows the conductive path to be folded into a smaller physical space, reducing the unit cell dimensions below one wavelength.
2Length of stationary object
If multi-layer conductive patterns are connected by via holes, then unit cell miniaturization is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent divides the conductive pattern into multiple segments on different layers, connected by via holes. This segmentation allows each layer to be independently designed and optimized, while the overall function is achieved through the coordinated interaction of segmented elements across layers.
Solution Approach 2:
The patent changes the structural parameters by introducing inter-layer connections via via holes, transforming a simple planar pattern into a three-dimensional multi-layer structure. This parameter change enables miniaturization while the regular periodic arrangement maintains manufacturing feasibility through standardized fabrication processes.
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 design allows for a frequency selective plate that can be miniaturized and configured in any shape and size, improving the flexibility and efficiency of antennas, wireless communication devices, and radar devices by decoupling the physical size from the wavelength requirements.
Implementation Method 1
a frequency selective plate for transmitting an electromagnetic wave of a predetermined frequency, and reflecting an electromagnetic wave of a frequency other than the predetermined frequency
Data Source
AI summary
In order to implement a frequency selective plate designable in any shape and size; and an antenna, a wireless communication device, and a radar device including a frequency selective plate designable in any shape and size, a frequency selective plate according to the present invention is a frequency selective plate for transmitting an electromagnetic wave of a predetermined frequency, and reflecting an electromagnetic wave of a frequency other than the predetermined frequency. The frequency selective plate includes at least one or more conductive closed loops configured in such a way that a conductive pattern formed on one layer, and a conductive pattern to be formed on at least one layer different from the one layer are electrically connected by a connecting portion.