Antenna-End Lightning Protection Structure With Replaceable Notch Coil
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Solution Overview
Problem
Existing lightning protection structures for antenna ends of filters in communication base stations suffer from low processing efficiency, high maintenance difficulty, and high replacement costs due to issues like central column deformation, poor diameter, and integrated electroplating, which complicates production and repair.
Innovation Solution
A lightning protection structure featuring a main jointing rod, printed circuit board, induction coil, and notch filter, where the induction coil is positioned within the notch filter, allowing for replaceable coil configurations and improved conductivity, with materials like copper-silver-plated components and aluminum alloy filters to enhance conductivity and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a central column structure is used in the notch filter, then the structural integrity is maintained, but the processing efficiency decreases and maintenance difficulty increases
Solution Approach 1:
The patent removes the integrated central column structure and segments the notch filter into a shell structure with separately mounted induction coils. This segmentation allows the induction coils to be independently processed, assembled, and replaced, significantly improving processing efficiency while reducing maintenance complexity.
Solution Approach 2:
The induction coils are extracted from the integrated central column structure and positioned separately within the notch filter shell. This extraction enables independent handling of the coils during manufacturing and maintenance, eliminating the need to process or replace the entire central column assembly.
2Reliability
If integrated electroplating is applied to the central column and shell, then the corrosion resistance is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The electroplating process is segmented by removing the central column structure. The shell and induction coils are electroplated separately, allowing for more efficient manufacturing processes and reduced complexity compared to integrated electroplating of a unified central column assembly.
3Reliability
If the induction coil is positioned outside the notch filter, then the assembly is simpler, but the signal integrity and protection performance deteriorate
Solution Approach 1:
The induction coils are nested within the notch filter shell structure, with the coils positioned inside the shell and connected to the main jointing rod. This nested arrangement ensures the coils are protected and properly positioned for optimal signal integrity while maintaining a compact and manageable assembly.
4Reliability
If copper-silver plating is applied to the main jointing rod, then the conductivity is improved, but the manufacturing cost increases
Solution Approach 1:
The copper-silver plating is applied locally to the main jointing rod where high conductivity is most critical for lightning protection performance. This selective application of premium material optimizes conductivity in key areas while controlling overall manufacturing costs.
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 new structure improves production yield, reduces maintenance costs, and enhances signal stability with flexible electronic device arrangement, while maintaining signal integrity and reducing electroplating complexities.
Implementation Method 1
The induction coil is arranged in the notch filter. The induction coil includes a spiral body portion, a first end portion and a second end portion
Implementation Method 2
with materials like copper-silver-plated components and aluminum alloy filters to enhance conductivity
Data Source
AI summary
A lightning protection structure includes an antenna jointing interface, a main jointing rod, a cavity filter, a printed circuit board, an induction coil and a notch filter. The main jointing rod passes through a wall surface of the cavity filter. The main jointing rod is coupled to the antenna jointing interface. The induction coil is arranged in the notch filter. The induction coil includes a spiral body portion, a first end portion and a second end portion. The first end portion and the second end portion extend from the spiral body portion in opposite directions. The first end portion of the induction coil extends through the top cover of the notch filter. The first end portion of the induction coil is coupled to the printed circuit board. The second end portion of the induction coil is coupled to a bottom wall of the notch filter.