Polymeric Cable Hanger Adapter for PIM Reduction
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Solution Overview
Problem
Existing cable hanger systems face challenges in efficiently securing multiple cables to structures without pre-formed holes, particularly in reducing or eliminating passive intermodulation (PIM) that can impact antenna performance.
Innovation Solution
The development of adapters for cable hangers, including a housing with engagement features and a plunger, a wheel and strap mechanism, and a securing screw with a compound head structure, allows for secure mounting on structures without pre-formed holes, using polymeric materials to minimize PIM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal cable hangers are used to secure cables to metallic structures, then secure mounting is achieved, but passive intermodulation (PIM) is generated that negatively impacts antenna performance
Solution Approach 1:
The patent introduces a polymeric adapter as an intermediary component between the metallic structure and the cable hanger system. This adapter includes a body with engagement features that interface with the structure, eliminating direct metal-to-metal contact and thereby reducing PIM while maintaining secure mounting capability
Solution Approach 2:
The patent employs composite material construction by combining polymeric adapter components with metallic cable hanger elements. The polymeric adapter body serves as a non-conductive interface that complements the metallic fastening elements, creating a hybrid assembly that provides both mechanical security and electromagnetic isolation
2Object-generated harmful factors
If adapters with polymeric materials are used to eliminate PIM, then antenna performance is improved, but mounting reliability on structures without pre-formed holes may be compromised
Solution Approach 1:
The patent divides the mounting system into segmented functional components: the polymeric adapter body provides electromagnetic isolation and structural interface, while separate metallic fastening elements (screws, bolts, or clamp mechanisms) provide secure mechanical attachment. This segmentation allows each component to optimize its specific function without compromise
Solution Approach 2:
The patent incorporates dynamic adjustment capabilities in the adapter design, such as adjustable clamp mechanisms or modular fastening systems that can adapt to various structure geometries and loading conditions. This dynamic flexibility ensures reliable mounting on diverse structures without pre-formed holes while maintaining the PIM-reducing polymeric interface
3Area of stationary object
If multiple cable hangers are stacked at single attachment points to conserve space, then space efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple cable hanger functions into a single integrated adapter assembly. The adapter body incorporates multiple mounting locations and engagement features that can accommodate several cable hangers simultaneously, consolidating what would otherwise require multiple separate attachment points into one unified component
Solution Approach 2:
The patent designs the adapter with universal multi-functionality, where a single adapter component can secure multiple types and sizes of cable hangers through standardized engagement features. This universal design allows diverse cable management needs to be met by one versatile adapter rather than requiring specialized components for each configuration
Data Source
AI summary
An adapter for a cable hanger includes: a housing having a floor, a vertical wall extending generally perpendicularly from the floor, and side walls extending generally perpendicularly from the floor and vertical wall, each of the side walls including a finger extending generally parallel to the floor, the fingers including first engagement features, the vertical wall including a mounting hole; and a plunger having a main panel and second engagement features on opposite sides of the main panel, the second engagement features configured to engage the first engagement features to restrict relative movement of the plunger relative to the housing.