Antenna Signal Separation Unit for Base Station Cable Reduction
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Solution Overview
Problem
Current antenna systems for mobile communication base stations require multiple cables and separate devices for signal transmission, leading to increased installation costs, space requirements, and weight due to the need for separate AISG and feeder cables, as well as additional components like the top ALD modem.
Innovation Solution
Integration of a signal separation unit within the antenna radome, utilizing a bias-T structure with a capacitor and inductor, to directly connect the feeder cable and eliminate the need for separate AISG and feeder cables, reducing the number of necessary cables and components, and using a general coaxial cable for connecting the RET device and signal separation unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate AISG and feeder cables are used for signal transmission, then signal transmission reliability is improved, but installation cost and device complexity increase
Solution Approach 1:
The patent combines the AISG cable and feeder cable into a single integrated cable system. The signal separation unit extracts control signals from the combined cable, eliminating the need for separate cables while maintaining signal integrity through proper filtering and separation techniques
Solution Approach 2:
The integrated cable serves multiple functions simultaneously - it acts as both the feeder cable for RF signals and the AISG cable for control signals. This multi-functional design reduces the number of components without compromising the reliability of either signal path
2Adaptability or versatility
If multiple separate devices are used for control signal processing, then control functionality is improved, but installation space and weight increase
Solution Approach 1:
The patent integrates the signal separation unit, filtering components, and control signal processing functions into a single compact module within the antenna system. This consolidation maintains full control functionality while significantly reducing the space required compared to separate devices
Solution Approach 2:
The signal separation unit is nested within the antenna structure, utilizing existing mounting spaces and integrating with the antenna's internal framework. This nesting approach minimizes additional installation space while preserving all control functions
3Adaptability or versatility
If additional components like top ALD modem are installed, then control capability is improved, but manufacturing cost increases
Solution Approach 1:
The signal separation unit performs multiple control functions (signal extraction, filtering, and processing) that would otherwise require separate components like the top ALD modem. This multi-functional design reduces component count and manufacturing cost while maintaining control capability
Solution Approach 2:
The signal separation unit is designed to automatically separate and process control signals without requiring additional external processing devices. The unit self-configures to handle both AISG and feeder signals, eliminating the need for costly additional components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration simplifies the installation process, reduces costs, and minimizes the required installation space and weight by eliminating the need for additional cables and separate devices, while maintaining effective control signal transmission and operation of the RET device.
Implementation Method 1
utilizing a bias-T structure with a capacitor and inductor, to directly connect the feeder cable
Data Source
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AI summary
The present invention is an antenna system of a mobile communication base station, comprising: a signal separation unit which is arranged within a radome of an antenna, and which separates a synthetic signal of a wireless signal transmitted from a main system of a base station through a feeder cable, a direct current power signal and a control signal having a preset format for controlling the antenna, in such a manner that the direct current power signal and the control signal are output by being separated from the wireless signal and the wireless signal is provided to an antenna unit; and equipment to be remotely controlled having a modem for receiving the direct current power signal and the control signal output from the signal separation unit and using the direct current power signal as an operating power and converting the control signal into a format which is preset to be internally recognizable in the radome of the antenna, the equipment to be remotely controlled performing an antenna control operation according to a control signal.