Bent Vibrator Arm Layout for Compact Low-Frequency Base Station Antennas
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Solution Overview
Problem
Existing base station antennas face challenges in improving signal transceiving performance, particularly at low frequencies, which affects the overall mobile communication technology.
Innovation Solution
The implementation of a low-frequency vibrator unit with vibrator arms bending towards the bottom and a director featuring a window corresponding to the extension branch, which reduces space occupancy and minimizes interference with high-frequency vibrator units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the vibrator arm is configured with extension branches and bending branches oriented towards the bottom, then the space occupancy is reduced and more units can be arranged, but the structural complexity increases
Solution Approach 1:
The vibrator arm is divided into multiple segments including extension branches and bending branches, allowing each segment to serve specific functions while reducing overall space occupancy. The extension branch extends the effective length for low-frequency operation, while the bending branch orienting towards the bottom reduces the horizontal footprint, enabling denser arrangements.
Solution Approach 2:
The bending branch is oriented towards the bottom dimension rather than extending horizontally, transitioning the structural growth from two-dimensional horizontal expansion to three-dimensional vertical utilization. This dimensional change reduces the area footprint while maintaining the electrical length required for low-frequency operation.
2Reliability
If the director is provided with a window corresponding to the extension branch orientation, then the cross-polarization ratio is improved and signal directivity increases, but the manufacturing complexity increases
Solution Approach 1:
The director is provided with a window at a specific location corresponding to the orientation of the extension branch. This localized feature is positioned precisely to allow electromagnetic energy to pass through to the bending branch, improving cross-polarization isolation only in the critical region where it is needed, rather than requiring complex structures throughout the entire director.
3Productivity
If more low-frequency vibrator units are arranged in the same space, then the signal transceiving performance is improved, but the interference with high-frequency vibrator units increases
Solution Approach 1:
The window in the director acts as an intermediary structure that selectively allows electromagnetic energy at low frequencies to pass through to the bending branch, while the geometric configuration and positioning create natural isolation for high-frequency signals. This intermediary structure enables the bending branch to receive energy without requiring direct exposure, reducing interference coupling with high-frequency vibrator units.
Data Source
AI summary
The embodiments of the present disclosure disclose a vibrator arm and a vibrator structure. The vibrator arm comprises an extension branch and a bending branch, and the bending branch bends to one side of the extension direction of the extension branch. Thus, the space occupation of the vibrator arm is reduced, especially when the number of the vibrator arm is large, the antenna formed through the vibrator arm is smaller and the structure is more compact.