Base Station Phase Shifter Assembly With Self-Aligning Wiper Teeth
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Solution Overview
Problem
Existing rotary wiper arc phase shifters for base station antennas require meticulous alignment of intermeshed wiper members, which is time-consuming and prone to errors, affecting the performance and efficiency of phase shifting.
Innovation Solution
The phase shifter assembly incorporates wiper members with oversized teeth and valleys that ensure correct alignment through complementary engagement, facilitating quick and error-free installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional intermeshed wiper members are used, then phase shifting function is achieved, but alignment is time-consuming and error-prone
Solution Approach 1:
The patent applies asymmetry by providing an oversized tooth on one wiper member and a corresponding oversized valley on the other wiper member. This asymmetric feature creates a unique complementary fit that enables quick visual identification and correct alignment during assembly, eliminating time-consuming alignment procedures while ensuring precise positioning of the intermeshed wiper members.
2Reliability
If meticulous alignment is performed, then proper engagement of wiper members is achieved, but installation becomes time-consuming
Solution Approach 1:
The patent implements preliminary action by pre-configuring the oversized tooth and oversized valley features on the wiper members before assembly. This preliminary design feature guides the alignment process automatically during installation, ensuring reliable engagement without requiring meticulous manual alignment, thereby significantly improving installation efficiency while maintaining engagement reliability.
3Ease of operation
If traditional wiper member design is used, then phase shifting is achieved, but alignment errors occur
Solution Approach 1:
The patent uses visual differentiation through the oversized tooth and valley features, which create a distinct visual pattern when correctly aligned. This visual indicator system acts similarly to color changes by providing immediate visual feedback during assembly, making it easy to identify correct alignment position and eliminate alignment errors while simplifying the operation.
Data Source
AI summary
A phase shifter assembly includes a mounting substrate; a first wiper phase shifter; a second wiper phase shifter; a first wiper member pivotally mounted to the mounting substrate overlying the first wiper phase shifter, the first wiper member having a first set of teeth; a second wiper member pivotally mounted on the mounting substrate overlying the second wiper phase shifter, the second wiper member having a second set of teeth, the second set of teeth intermeshed with the first set of teeth. The first set of teeth has a first discontinuity, and the second set of teeth has a second discontinuity that is complementary to the first discontinuity, such that engagement of the first and second discontinuity enables proper alignment of the first and second wiper members relative to each other.