Millimeterwave Repeater Distributed Antenna System Power Transmission
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Solution Overview
Problem
Millimeterwave repeaters and distributed antenna systems face installation challenges due to the need for power supply and multiple cables, particularly in areas where power infrastructure is limited, such as rooftops or campuses.
Innovation Solution
A distributed antenna system using a millimeterwave repeater that combines RF, communication, and synchronization signals with power supply in a single transmission line, allowing the donor unit or server unit to transmit these signals together, enabling power supply through an RF signal cable, thus simplifying installation by reducing the need for separate power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power supply line and signal lines are used for millimeterwave repeater, then reliable power supply is ensured, but installation complexity and cost increase in locations without power infrastructure
Solution Approach 1:
The patent combines power supply transmission and signal transmission into a single transmission line. The power supply unit transmits both power (DC signal) and signal (RF, CM, Sync) through the same cable from the server unit to the donor unit, eliminating the need for separate power lines and reducing installation complexity in locations without power infrastructure.
Solution Approach 2:
The transmission line is designed to serve multiple functions simultaneously: it transmits power (DC signal) and transmits signals (RF, CM, Sync) from the server unit to the donor unit. This multi-functional transmission line replaces the conventional separate power supply line and signal lines, enabling installation in locations without existing power infrastructure.
2Reliability
If multiple cables are installed for power and signal transmission, then signal quality is maintained, but installation time and cost increase
Solution Approach 1:
The patent merges power supply transmission and signal transmission into a single transmission line. By transmitting both power (DC signal) and signals (RF, CM, Sync) through the same cable, the installation process requires only one cable instead of multiple separate cables, significantly reducing installation time while maintaining transmission quality through proper signal separation at the receiver.
3Adaptability or versatility
If power supply line is extended long distance within building, then power can reach rooftop location, but installation difficulty and cost increase
Solution Approach 1:
The transmission line is designed to simultaneously transmit power and signals over long distances within the building infrastructure. This multi-functional approach allows the same cable to replace both power supply extension and signal transmission, making installation at rooftop locations more feasible by utilizing existing communication cable pathways rather than requiring separate power line extensions.
Data Source
AI summary
Provided is a distributed antenna system using a millimeterwave repeater. The distributed antenna system includes a donor unit configured to receive a downlink millimeter band radio frequency (RF) signal from a gNodeB base station, sum the received RF signal with a communication signal, and a synchronization signal to generate a summation signal, and transmit the summation signal; a transmission unit configured to transmit the summation signal and a power signal for power supply; and a server unit configured to receive the summation signal, separate and amplify the summation signal to transmit an RF signal to a user terminal. Only one of the donor unit and the server unit includes a power supply unit configured to generate the power signal.