Broadband Patch Antenna With Edge Corrugations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing patch antennas for wireless communication systems face challenges in achieving cost-effectiveness and compactness while providing wide frequency band coverage, as they often compromise on electrical performance.
Innovation Solution
The use of multilayer substrate technology with corrugations on the edges or sides of the patch antennas, where the ridges are either parallel or perpendicular to the longer side of the second rectangular patch, to create an impedance-transforming circuit that enhances bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multilayer substrate technology is used to create compact antennas, then miniaturization and cost-effectiveness are improved, but bandwidth is limited
Solution Approach 1:
The patent introduces corrugations (ridges and grooves) on the patch surface, adding a third dimension (depth) to the otherwise planar structure. This dimensional change enables bandwidth expansion without increasing the antenna's footprint area, resolving the contradiction between miniaturization and bandwidth.
Solution Approach 2:
The patent modifies the electrical parameters of the antenna by introducing corrugations with specific ridge widths, groove depths, and spacing. These parameter changes transform the impedance characteristics and resonate at multiple frequencies, thereby expanding bandwidth while maintaining compact dimensions.
2Adaptability or versatility
If corrugations are added to expand bandwidth, then frequency band coverage is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the corrugation structure with the patch antenna itself, making the bandwidth-expanding features an integral part of the radiating element rather than a separate component. This merging simplifies manufacturing by eliminating additional assembly steps while achieving bandwidth expansion.
Solution Approach 2:
The corrugations are applied locally to specific regions of the patch (edges or center) rather than requiring complex modifications throughout the entire structure. This localized approach maintains manufacturing simplicity while achieving the desired bandwidth expansion effect.
3Reliability
If complex corrugation patterns are used to achieve broadband operation, then electrical performance is improved, but cost increases
Solution Approach 1:
The patent employs simple geometric corrugation patterns (straight ridges and grooves) that can be manufactured using low-cost standard PCB fabrication techniques, avoiding the need for expensive complex molding or machining processes while achieving broadband performance.
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 results in a broadband operation with improved electrical performance and cost-effectiveness, as demonstrated by simulated return loss data showing a significantly wider bandwidth compared to antennas without corrugations.
Implementation Method 1
forming corrugations at the patch edges or the patch sides in which ridges are in parallel to the longer side of the second rectangular patch disposed under the first conductive patch... forming corrugations at the patch edges or the patch sides in which ridges are perpendicular to the longer side of the second rectangular patch disposed under the first conductive patch... which can provide a broadband operation
Data Source
AI summary
An antenna of the present invention includes: a first conductive patch having a rectangular shape with corrugations on two opposing sides; and a second conductive patch below said first conductive patch and connected to a feeding point.