Cylindrical Antenna Partitions for 5G Dielectric Loss Reduction
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Solution Overview
Problem
Current car antennas, particularly patch array antennas, suffer from significant dielectric loss and narrow frequency band characteristics, especially in high-frequency applications like 5G communication and radar systems, limiting their efficiency and space utilization.
Innovation Solution
A cylindrical antenna design with a radiation surface and inner partitions forming sector-shaped apertures, which radiate radio waves efficiently and provide directional patterns, minimizing space occupation and improving frequency band characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a patch array antenna is used to achieve a light weight and thin design, then the antenna can be made compact, but dielectric loss increases significantly reducing antenna efficiency
Solution Approach 1:
The patent removes the dielectric substrate entirely from the antenna structure. Instead of using a patch array on a dielectric substrate, the invention employs a cylindrical cavity resonator where the cavity itself serves as the resonating structure, eliminating the source of dielectric loss while maintaining compact dimensions through the cavity's resonant properties
Solution Approach 2:
The patent changes the fundamental operating parameters by transitioning from a planar patch array configuration to a three-dimensional cylindrical cavity structure. This geometric transformation allows the antenna to achieve compact size through the cavity's resonant frequency characteristics rather than relying on dielectric materials, thereby reducing dielectric loss while maintaining small physical dimensions
2Speed
If a patch array antenna is used for high frequency applications like 5G and radar, then the antenna can operate at these frequencies, but the efficiency drops below 30%
Solution Approach 1:
The patent extracts and removes the dielectric substrate that causes significant losses at high frequencies. By using a metallic cylindrical cavity resonator instead, the antenna achieves high-frequency operation (5G and radar bands) with dramatically improved efficiency, as the metallic structure has much lower loss characteristics at these frequencies compared to dielectric materials
Solution Approach 2:
The patent employs a composite structure combining metallic cylindrical cavity with partition walls, creating a resonator that operates efficiently at high frequencies. The metallic construction provides low-loss characteristics essential for 5G and radar applications, while the cavity geometry enables precise frequency control through its resonant modes
3Ease of manufacture
If a patch array antenna uses a series feeding structure, then the antenna can be constructed, but the frequency band becomes extremely narrow
Solution Approach 1:
The patent segments the cylindrical cavity into multiple sections using partition walls that extend from the cavity wall toward the center axis. These partitions create multiple resonant modes within the same physical structure, enabling broad frequency band operation. The segmentation allows different partition configurations to support different frequency bands, providing versatility while maintaining a simple overall manufacturing approach
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 cylindrical antenna design enhances radio wave radiation efficiency, achieves directional patterns, and optimizes space usage, addressing the limitations of existing antennas in high-frequency applications.
Implementation Method 1
A plurality of radiation apertures formed by the plurality of partitions may be formed in the radiation surface. The plurality of radiation apertures may be configured to radiate a radio wave.
Data Source
AI summary
An antenna includes an antenna body formed with a cylindrical shape having a radiation surface, an outer surface and an inner surface, and a plurality of partitions protruding from the inner surface to a central axis of the antenna body, wherein a plurality of radiation apertures is formed by the plurality of partitions, and the plurality of radiation apertures is formed in the radiation surface and is configured to radiate a radio wave.