Cable Network Amplifier Layout Without Diplex Filters for Full Duplex
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Solution Overview
Problem
Traditional cable network amplifiers with diplex filters limit network flexibility and bandwidth, preventing the use of full-duplex technology and requiring frequent modifications to accommodate bidirectional signal transmission.
Innovation Solution
The use of modular amplifier devices without diplex filters, employing splitters with high port-to-port isolation and separate forward and return amplifiers, enables simultaneous bidirectional communication within a full duplex frequency range of 5 MHz to 650 MHz, allowing for flexible band splits and reduced noise amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If diplex filters are used in traditional amplifiers to separate forward and return signal paths, then signal path separation is achieved, but network flexibility and bandwidth are limited
Solution Approach 1:
The patent removes diplex filters from the amplifier configuration, extracting the signal path separation function to dedicated forward and return amplifiers. This elimination of unnecessary components directly increases network flexibility while reducing amplifier configuration complexity, as the system no longer requires frequent filter modifications to accommodate different bidirectional communication modes.
Solution Approach 2:
The patent implements universal amplifiers that can handle both forward and return signals without requiring diplex filter configuration. These amplifiers are designed to be multi-functional, processing signals in both directions simultaneously across the full frequency range, thereby eliminating the need for frequent reconfiguration and enhancing overall network adaptability.
2Quantity of substance
If diplex filters are used to separate forward and return signals, then signal path separation is achieved, but bandwidth is limited and full-duplex technology cannot be implemented
Solution Approach 1:
By removing diplex filters from the system, the patent extracts the bandwidth limitation imposed by filter-based signal separation. This allows the implementation of full-duplex technology that utilizes the entire frequency range from 5 MHz to 650 MHz for simultaneous bidirectional communication, significantly increasing available bandwidth without requiring frequent amplifier modifications.
Solution Approach 2:
The patent implements dynamic signal handling where amplifiers can adaptively process both forward and return signals across the full frequency spectrum without fixed filter constraints. This dynamic approach enables flexible bandwidth allocation and full-duplex operation, allowing the system to optimize performance based on real-time communication requirements without hardware reconfiguration.
3Object-affected harmful factors
If traditional amplifiers with diplex filters are used, then signal path separation is achieved, but noise amplification increases
Solution Approach 1:
The patent removes diplex filters that were causing noise amplification issues. By extracting these filters from the signal path and replacing them with dedicated forward and return amplifiers, the system eliminates the source of excessive noise amplification while maintaining proper signal path separation through the modular amplifier architecture.
Solution Approach 2:
The patent converts the potential harm of noise amplification by redesigning the amplifier structure to inherently prevent noise introduction. The new configuration uses amplifiers optimized for their specific signal directions, transforming what was previously a harmful effect (noise amplification through diplex filters) into a benefit (reduced noise through dedicated signal path amplification).
Data Source
AI summary
A cable network system for bidirectionally communicating signals at an enhanced duplex frequency range, which may be between about 5 MHz and about 650 MHz. This system may include a first amplifier, which may be configured to condition an upstream signal proceeding from a subscriber premises to a headend, without necessarily conditioning a downstream signal proceeding from the headend to the subscriber premises, a second amplifier, which may be configured to condition the downstream signal without necessarily conditioning the upstream signal, and a shaping circuit, which may condition the upstream and downstream signals. This system also may simultaneously, or in an overlapping or offset manner, communicate signals at a full duplex frequency range without a diplex filter.