Polymeric Cable Adapter Reducing PIM via Locking Arms
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Solution Overview
Problem
Existing cable hanger systems face challenges in efficiently securing multiple cables in close proximity without causing passive intermodulation (PIM), especially when mounting to metallic structures, which can impact antenna performance.
Innovation Solution
A polymeric adapter with angled mounting panels, locking arms, and a reinforcement unit is designed to securely attach cable hangers to mounting structures, providing options for mounting via holes or hose clamps, and featuring a flexible stop to prevent deflection and maintain secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple cable hangers are mounted in close proximity to secure multiple cables, then cable management efficiency is improved, but the risk of passive intermodulation (PIM) increases due to metal-to-metal interfaces
Solution Approach 1:
The patent introduces a polymeric adapter as an intermediary component between the mounting structure and cable hangers. This adapter includes a mounting panel with a hole and locking arms that engage with the mounting structure, eliminating direct metal-to-metal contact between cable hangers and metallic mounting structures, thereby reducing PIM while maintaining secure cable management
Solution Approach 2:
The adapter is constructed from polymeric materials (such as polyetheretherketone or other high-strength polymers) that combine mechanical strength with electrical isolation properties. This composite material approach allows the adapter to provide both structural support for multiple cable hangers and electrical insulation to prevent PIM generation
2Reliability
If a secure mounting solution is provided for multiple cable hangers, then mounting reliability is improved, but device complexity increases due to additional components like locking arms and reinforcement units
Solution Approach 1:
The patent combines multiple functions into a single integrated adapter component: the mounting panel provides structural support, the hole enables engagement with mounting structures, the locking arms provide secure attachment through deflection and engagement, and the reinforcement unit adds structural integrity. This merging of functions reduces the need for multiple separate components while maintaining mounting reliability
Solution Approach 2:
The locking arms are designed with dynamic characteristics, allowing them to deflect during installation to pass through mounting holes and then spring back to engage and lock the adapter securely to the mounting structure. This dynamic behavior simplifies the installation process and ensures reliable mounting without requiring complex fastening mechanisms
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 adapter effectively reduces or eliminates PIM by providing a secure mounting solution for multiple cable hangers, allowing for efficient cable management and improved antenna performance by using polymeric materials that minimize metal-to-metal interfaces.
Implementation Method 1
a reinforcement unit, the reinforcement unit including a flexible arm and a stop, the stop configured to fit within the gap and inhibit deflection of the locking arms
Data Source
AI summary
An adapter for mounting cable hangers to a mounting structure includes: a plurality of mounting panels including a mounting hole, the mounting panels attached to each other at edges thereof and being disposed at an angle relative to its adjacent mounting panels; two base segments, each attached to the edge of an endmost one of the mounting panels and extending therefrom toward each other, the base segments and the mounting panels defining an interior region of the adapter; and first and second locking arms, each locking arm extending from an end of one of the base segments and including a locking feature, the first locking arm extending generally parallel to the second locking arm and defining a gap therebetween; and a reinforcement unit including a flexible arm and a stop configured to fit within the gap and inhibit deflection of the locking arms.