Dual-Frequency Antenna Structure Using Capacitive Circular Polarization
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Solution Overview
Problem
Conventional dual-frequency antennas have complex structures and inefficient manufacturing processes, leading to high costs.
Innovation Solution
A dual-frequency antenna structure is designed with a substrate, grounding element, conductive sheet, transmitting antenna, and receiving antenna, featuring capacitive effects to generate left- and right-handed circular polarizations, simplifying the overall structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dual-frequency antenna structures are designed with intricate copper foil lines or two independently operating antenna architectures, then dual-frequency effect is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the transmitting and receiving antenna functions into a single integrated structure. The antenna comprises a feeding port, a first arm and a second arm that are electrically connected at one end, with both arms extending in opposite directions. This unified structure eliminates the need for two independently operating antenna architectures, thereby achieving dual-frequency effect while reducing structural complexity.
Solution Approach 2:
The antenna structure is designed to perform multiple functions: it can operate as both a transmitting antenna and a receiving antenna across different frequency bands. The first arm and second arm are configured to support both transmission and reception modes, allowing the same structure to serve dual purposes and eliminate the need for separate antenna systems.
2Adaptability or versatility
If conventional dual-frequency antennas use intricate copper foil lines and complex components, then dual-frequency effect is achieved, but manufacturing efficiency decreases and cost increases
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated structure with a feeding port, first arm, and second arm. This merged design eliminates the need for multiple separate components and intricate copper foil line patterns, making the manufacturing process more efficient and cost-effective while maintaining dual-frequency capability.
3Adaptability or versatility
If conventional dual-frequency antennas are configured with two independently operating antenna architectures, then dual-frequency coverage is achieved, but the overall structure becomes complicated
Solution Approach 1:
The antenna is segmented into functional portions: a feeding port for signal input, a first arm extending in a first direction, and a second arm extending in a second direction opposite to the first. Each segment has a specific function, but they are electrically connected to form a unified structure that achieves dual-frequency coverage without the complexity of two independent architectures.
Solution Approach 2:
The patent merges the functionality of two independent antenna architectures into a single integrated structure. The first arm and second arm, while extending in opposite directions, are electrically connected at one end and share a common feeding port, creating a unified antenna system that provides dual-frequency coverage with simplified architecture.
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 dual-frequency antenna structure achieves a dual-frequency effect while simplifying the overall design, reducing manufacturing complexity and costs.
Implementation Method 1
The first feeding conductive pad and the first coupling conductive pad are jointly configured to produce one series capacitive effect, and the first feeding conductive pad and the grounding element are jointly configured to produce one parallel capacitive effect, so as to generate a left-handed circular polarization
Implementation Method 2
The second feeding conductive pad and the second coupling conductive pad are jointly configured to produce another series capacitive effect, and the second feeding conductive pad and the grounding element are jointly configured to produce another parallel capacitive effect, so as to generate a right-handed circular polarization
Data Source
AI summary
A dual-frequency antenna structure includes a substrate, and a grounding element, a conductive sheet, a transmitting antenna, and a receiving antenna that are disposed on the substrate. The transmitting antenna includes a first coupling conductive pad, a first conductive column that is electrically coupled to the first coupling conductive pad and the conductive sheet, and a first feeding conductive pad. The first feeding conductive pad can produce a capacitive effect with each of the first coupling conductive pad and the grounding element. The receiving antenna includes a second coupling conductive pad, a second conductive column that is electrically coupled to the second coupling conductive pad and the conductive sheet, and a second feeding conductive pad. The second feeding conductive pad can produce a capacitive effect with each of the second coupling conductive pad and the grounding element.