Base Station Signal Matching Device Heat Management
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Solution Overview
Problem
Conventional external base station signal matching devices are costly, large, and generate passive intermodulation distortion and heat due to high-power attenuators, leading to reduced lifespan and service reliability in distributed antenna systems.
Innovation Solution
A base station signal matching device is integrated into the base station interface unit, processing signals in a distributed antenna system by branching low-power signals for matching and terminating high-power signals using a high-power attenuator, while providing heat removal and real-time monitoring to prevent distortion and extend device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a high-power attenuator is used to adjust the power of base station signals, then the power level is reduced to an appropriate level, but passive intermodulation distortion signals are generated and a large amount of heat is produced
Solution Approach 1:
The patent divides the high-power signal processing into two separate paths: a main path that terminates high-power signals without attenuation, and a coupled path that extracts and processes only the necessary low-power signal portion. This segmentation avoids applying attenuation to the entire high-power signal, thereby eliminating the source of passive intermodulation distortion and excessive heat generation while still obtaining the required low-power signal for further processing.
2Reliability
If conventional external base station signal matching devices are used, then signal matching is achieved, but manufacturing cost increases and device size increases
Solution Approach 1:
The patent integrates the base station signal matching function directly into the distributed antenna system's base station interface unit, merging previously separate external matching devices with the internal signal processing architecture. This integration eliminates the need for separate external attenuators and matching components, thereby reducing manufacturing cost and device size while maintaining signal matching capability through the coupled path extraction mechanism.
3Reliability
If passive elements are used for signal matching, then signal processing is achieved, but miniaturization becomes difficult due to large size
Solution Approach 1:
The patent replaces traditional passive mechanical attenuators and filters with an electrical field-based coupled path extraction mechanism. Instead of using physical attenuation components that occupy significant space, the invention uses electromagnetic coupling to extract the necessary signal portion, enabling miniaturization of the signal matching functionality while maintaining processing capability.
Data Source
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AI summary
A base station signal matching device is a base station signal matching device mounted in a distributed antenna system for amplifying a received base station signal and transmitting the amplified base station signal to a user terminal. The base station signal matching device includes a power level adjusting unit for generating first and second branch base station signals of which power levels are adjusted based on the base station signal, and transmitting the second branch base station signal to a termination unit, and a signal matching unit for matching the first branch base station signal to be suitable for signal processing of the distributed antenna system.