RF Coaxial Cable Power Adapter for RRH Transceivers

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Solution Overview

Problem

Existing RF coaxial cables often have insufficient current carrying capacity to deliver the required electrical power to remote devices like RRH transceivers, and their internal conductor configurations are not readily apparent due to pre-existing coaxial interface terminations.

Innovation Solution

An adapter that couples both the inner and outer conductors of an RF coaxial cable to a single power conductor, allowing the entire cable to be used as a high current capacity electrical power transmission line, with a dielectric boot and heat shrink sleeve for safety and sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If RF coaxial cable is used for power transmission, then existing cable infrastructure can be utilized, but the current carrying capacity is insufficient to deliver required electrical power

Engineering Contradiction:
Improvecable utilizationVSAvoidpower delivery capacity
Core Design Contradiction:
Adaptability or versatilityVSPower

Solution Approach 1:

The adapter combines both the inner conductor and outer conductor of the coaxial cable to a single power conductor, effectively merging the current carrying paths. This allows the entire cable structure to contribute to power transmission, significantly increasing the power delivery capacity while utilizing the existing cable infrastructure.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If coaxial interface terminations are present, then connector compatibility is ensured, but internal conductor configurations become hidden and not readily apparent

Engineering Contradiction:
Improveconnector compatibilityVSAvoidconductor configuration visibility
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The adapter acts as an intermediary device that interfaces between the existing coaxial connector and the power transmission requirement. It provides the necessary electrical connections internally while presenting a standard coaxial interface externally, thus maintaining connector compatibility while enabling access to the conductor configurations through the adapter's connection points.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Power

If adapter is added to increase power capacity, then power delivery capability is improved, but device complexity increases

Engineering Contradiction:
Improvepower transmission capacityVSAvoidsystem structure
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The adapter is designed to perform multiple functions: it provides mechanical connection to the coaxial interface, establishes electrical connections between both conductors and the power conductor, provides structural support, and enables high current capacity power transmission. This multi-functionality reduces the need for separate components and simplifies the overall system structure despite the increased power capacity requirement.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9787037B2Power adapter for RF coaxial cable and method for installation
Publication Date: 2017.10.10 OUTDOOR WIRELESS NETWORKS LLC
  • US9787037B2 patent drawing
  • US9787037B2 patent drawing
  • US9787037B2 patent drawing

AI summary

An adapter for coupling a coaxial interface to a power conductor and method for interconnection may be provided as a body with a conductor junction dimensioned to couple with the power conductor and a mating surface dimensioned to couple with the coaxial interface. The conductor junction, an outer conductor contacting portion of the mating surface and an inner conductor contacting portion of the mating surface are electrically coupled together by the body.