Dual-Patch Antenna Layout for Thin Dual-Band Circular Polarization
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Solution Overview
Problem
The stacked structure of UWB antenna modules with multiple conductive patches and ground layers increases the thickness of the antenna, which may not be optimal for modern electronic devices.
Innovation Solution
A simplified antenna structure with two conductive patches producing orthogonal circular polarizations, each with specific cuts and slits, and connected to a wireless communication circuit to transmit and receive signals in different frequency bands, while maintaining a compact form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stacked structure with multiple conductive patches and ground layers is used to achieve dual-band operation and circular polarization, then the antenna can operate in multiple frequency bands with excellent radiation performance, but the thickness of the antenna module increases
Solution Approach 1:
The patent combines multiple antenna functions (dual-band operation and circular polarization) into a single integrated patch structure. The first and second conductive patches are arranged in a stacked configuration where they share common ground layers, merging what would traditionally require separate antenna modules into one compact unit that achieves both frequency bands and circular polarization without proportionally increasing thickness
Solution Approach 2:
The antenna module is designed with universal functionality to operate across multiple frequency bands (first and second frequency bands) and provide circular polarization through a unified structure. The conductive patches and ground layers are configured to simultaneously support multiple operating modes, making the antenna adaptable to various communication standards without requiring separate specialized antennas for each function
2Adaptability or versatility
If a stacked structure with multiple conductive patches and ground layers is used to achieve dual-band operation and circular polarization, then the antenna can operate in multiple frequency bands with excellent radiation performance, but the structural complexity increases
Solution Approach 1:
The patent merges multiple ground layers into a shared common ground structure that serves both the first and second conductive patches. This consolidation reduces the number of discrete components and simplifies the overall stacked architecture while maintaining the electrical isolation and coupling necessary for dual-band operation and circular polarization generation
3Volume of moving object
If the patch size is reduced through slits and cut portions, then the antenna achieves compact form factor, but the manufacturing precision requirements increase
Solution Approach 1:
The conductive patches are segmented with strategically placed slits and cut portions that break down the continuous structure into manageable sections. These segments are designed to create specific resonance characteristics that enable compact size while the segmentation itself provides tolerance to manufacturing variations by distributing the electromagnetic field across multiple discrete regions rather than relying on a single continuous structure
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 provides excellent radiation performance and compact design, enabling efficient position measurement of external devices with reduced thickness and improved signal handling capabilities.
Implementation Method 1
two conductive patches producing orthogonal circular polarizations
Implementation Method 2
excellent radiation performance
Data Source
AI summary
An electronic device includes a substrate including a ground layer; and a plurality of antenna structures space apart from each other on the substrate. Each of the plurality of antenna structures may include, on the substrate: a rectangular first conductive patch including a pair of cutting portions in which diagonally opposite corners are cut; a rectangular second conductive patch disposed so as to be coupled to the first conductive patch; and a plurality of conductive pads which are disposed along the periphery of the second conductive patch so as to be spaced apart from each other at a specified interval, and are electrically connected to the ground layer.