Nested Radome Antenna Layout for Compact Multi-Band Integration
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Solution Overview
Problem
Current antenna integration methods increase the frontal area and thickness of antenna systems, limiting their deployment on poles due to space constraints and compromising use security.
Innovation Solution
An antenna system comprising two independent antennas with a first radome having a groove and a second radome with an outer surface extending into the groove, along with a feed network positioned on the side, allowing for flexible combination without significantly increasing thickness and ensuring normal operation, using frequency selective surfaces to enhance signal propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are mounted on a pole using current integration methods, then more communication frequency bands can be supported, but the frontal area of the antenna system is significantly increased
Solution Approach 1:
The patent applies nesting by placing the second antenna inside the groove of the first radome, and positioning the feed network within the groove space. This nested arrangement allows multiple antennas to be integrated without significantly increasing the overall frontal area, as components are arranged in a hierarchical space-efficient manner
Solution Approach 2:
The patent transitions from a planar arrangement to a three-dimensional configuration by utilizing the groove depth and vertical space within the radome. The second antenna and feed network are positioned in the depth dimension of the groove rather than extending the frontal area, effectively using another spatial dimension to resolve the area constraint
2Adaptability or versatility
If multiple antennas are integrated using current methods, then more antennas can be mounted, but the thickness size of the antenna system is significantly increased
Solution Approach 1:
The second antenna is nested within the groove of the first radome, utilizing the existing structural depth rather than adding to it. The feed network is also positioned within the groove, creating a compact integrated assembly that maintains the original thickness profile of the first antenna
3Device complexity
If the feed network is positioned close to the second antenna, then integration is achieved, but the electromagnetic wave from the feed network affects the normal operation of the second radiating assembly
Solution Approach 1:
The patent applies local quality by using a frequency selective surface with specific electromagnetic properties positioned between the feed network and second radiating assembly. This surface is designed to be transparent to certain frequency bands while blocking others, creating a localized electromagnetic environment that allows close integration without interference
Solution Approach 2:
The frequency selective surface acts as an intermediary between the feed network and second antenna, mediating their electromagnetic interaction. It allows the feed network to be positioned close to the second antenna for integration purposes while preventing harmful electromagnetic coupling that would affect the second antenna's operation
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 reduces the frontal area and thickness of the antenna system, improving use security and maintaining normal operating performance, enabling more antennas to be integrated without increasing the overall size, thus facilitating wider deployment.
Implementation Method 1
The first frequency selective surface is located between the first radiating assembly and the second radiating assembly, and is configured to reflect a signal of the first radiating assembly and transmit a signal of the second radiating assembly
Implementation Method 2
The feed network is connected to the first radiating assembly, so that the feed network feeds a signal to the first radiating assembly based on a specific amplitude and phase
Data Source
AI summary
This disclosure provides an antenna system. The antenna system includes a first antenna and a second antenna. The first antenna includes a first radome, a first radiating assembly, and a feed network. The second antenna includes a second radome and a second radiating assembly. The first radome has a first outer surface. The first outer surface has a groove. The feed network is disposed on a side part of the groove, and the feed network is disposed in the first radome and is connected to the first radiating assembly. The second radome has a second outer surface, the second radiating assembly is disposed in the second radome, and at least a part of the second outer surface extends into the groove. In the antenna system provided in this disclosure, when the first antenna and the second antenna are used in combination, a thickness size is not significantly increased.