RF Amplifier Passive Path MoCA Signal Routing
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Solution Overview
Problem
RF signal amplifiers in cable television networks face interruptions during power outages, disrupting essential services like 911 emergency communications, and existing solutions do not effectively manage MoCA signals within the coaxial cable networks.
Innovation Solution
The RF signal amplifiers incorporate a passive communications path and a MoCA rejection filter to ensure continuous service during power outages, with a power divider network and diplexers that route signals between active and passive paths, allowing MoCA signals to be transmitted between active and passive RF output ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an active RF signal amplifier is used to amplify forward path signals, then signal quality and service reliability are improved, but the system becomes vulnerable to power interruptions that disrupt essential services
Solution Approach 1:
The amplifier is divided into two separate communication paths: an active path with power amplification and a passive path without active components. The passive path remains operational during power interruptions, ensuring continuity of essential services while the active path handles non-essential services when power is available.
Solution Approach 2:
Different sections of the system have different operational characteristics - the passive communication path is designed to be always-on and power-independent, while the active path provides enhanced performance when powered. This local differentiation allows the system to maintain essential functions under all conditions.
2Reliability
If a passive communication path is added to ensure service during power outages, then reliability during power interruptions is improved, but device complexity increases
Solution Approach 1:
The active and passive communication paths are merged into a single integrated amplifier device with shared components such as the RF input port, power divider network, and housing. This consolidation reduces overall system complexity compared to using separate devices for each path.
Solution Approach 2:
The amplifier device performs multiple functions by supporting both active and passive communication paths within a single unit. The power divider network and diplexers serve both paths, allowing the device to adapt its functionality based on power availability without requiring separate dedicated devices.
3Measurement precision
If MoCA rejection filters are implemented to enhance MoCA signal quality, then signal-to-noise ratio is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The MoCA rejection filters are nested within the existing diplexer structures and integrated into the signal path between the power divider network and RF output ports. This nested integration allows the filters to be incorporated without adding separate external components, minimizing increases in device complexity.
Data Source
AI summary
RF signal amplifiers are provided that include an RF input port and a power divider network having a plurality of active output ports. An active communications path connects the RF input port to the power divider network. The active communications path includes at least one power amplifier. The RF signal amplifier also includes a passive output port and a passive communications path connecting the RF input port to the passive output port. An electrical connection with at least one circuit unit connects the active communications path and the passive communications path so that MoCA signals may flow between the active communications path and the passive communications path, but the at least one circuit unit preventing upstream and downstream frequency bands of a service provider from passing along the electrical connection. In various embodiments, the at least one circuit unit may be selected from one or more diplexers and one or more filters.