Antenna Feed Structure With Elastic Bending Cable for Compact Cavities
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Solution Overview
Problem
Current antenna feed structures face challenges in miniaturization and weight reduction due to the need for vertical electrical connections between cavities, which are not efficiently addressed by traditional radio frequency transmission cables and jumpers, hindering the integration and efficiency of communication systems.
Innovation Solution
A feed structure incorporating deformable elastic bending parts in signal cables that can extend and connect through holes between cavities, allowing for compact design and improved signal transmission by reducing the need for multiple welding joints and increasing contact area, thereby enhancing signal stability and structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional radio frequency transmission cables and jumpers are used for electrical connections between cavities, then the connection method is simple and reliable, but the antenna size and weight increase, hindering miniaturization
Solution Approach 1:
The signal cable is designed with a deformable bending part that can dynamically change its shape during installation. The bending part can be deformed to fit through the connection hole and then restored to its original shape, creating a stable connection. This dynamic characteristic allows the cable to adapt to the installation space requirements while maintaining connection reliability.
Solution Approach 2:
The signal cable's physical parameters are changed by introducing a deformable bending part with specific elastic properties. The bending part can change its shape (from deformed state during installation to restored state in final position) to enable passage through the connection hole while maintaining electrical connection. This parameter change allows the cable to satisfy both the space constraint and the connection reliability requirement.
2Ease of manufacture
If traditional rigid signal cables are used, then the installation process is simple, but the cavity length must be increased to accommodate the cable, increasing overall antenna size
Solution Approach 1:
The bending part of the signal cable is designed to be deformable during installation, allowing it to be pushed through the connection hole in a compressed or bent state. Once installed, it restores to its original shape, providing a stable electrical connection without requiring the cavity to be longer than necessary.
Solution Approach 2:
The deformable bending part allows the signal cable to be nested or compressed within the limited space of the connection hole during installation. The cable can be inserted in a compact form and then expand to its functional shape, effectively utilizing the available space without increasing cavity length.
3Reliability
If multiple welding joints are used to connect signal cables between cavities, then the connection is stable, but the number of manufacturing steps increases and manufacturing complexity rises
Solution Approach 1:
The signal cable design integrates the connection function directly into the cable structure itself. The deformable bending part serves both as the signal transmission medium and as the connection mechanism, eliminating the need for separate welding joints or connectors. This merging of functions reduces manufacturing steps while maintaining connection stability.
Solution Approach 2:
The signal cable's deformable bending part performs the connection function automatically through its elastic deformation and restoration characteristics. The cable itself provides the connection stability through its physical properties rather than requiring additional welding or fastening operations, thereby simplifying the manufacturing process.
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 solution enables a more compact and lightweight antenna design with improved signal transmission characteristics and structural strength, facilitating efficient communication system integration while reducing space and weight requirements.
Implementation Method 1
the first elastic bending part can be deformed towards the extension direction of the first main part; the length of the first elastic bending part in a second direction is greater than a length of the first cavity in the second direction... the first elastic bending part needs to be deformed in the extension direction of the first main part. In other words, the first elastic bending part is squeezed in the first cavity in a compressed state, and then is continuously pushed towards the first cavity until the first elastic bending part reaches a location of the first hole. The first elastic bending part is restored to an original shape
Data Source
Figure 1~2
Figure 3~4
Figure 5~6a
AI summary
This application provides a feed structure of an antenna, an antenna, and a communication device. The feed structure includes a first cavity with a first signal cable and a second cavity with a second signal cable. The first signal cable includes a first main part and a first elastic bending part located at one end of the first main part. The first main part extends along a first direction. An extension direction of the first elastic bending part intersects with the first direction, and the first elastic bending part can be deformed towards the extension direction of the first main part. A first hole is provided between the first cavity and the second cavity. The first cavity and the second cavity are connected through the first hole. A length of the first elastic bending part in a second direction is greater than a length of the first cavity in the second direction. One end the first elastic bending part away from the first main part is connected to the second signal cable through the first hole. In this application, the first elastic bending part of the feed structure extends into the first cavity in a compressed state, to facilitate installation, save space of the feed structure, and reduce weight.