Multi-Band Amplifier Structure for Lower-Cost Distributed Antennas
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Solution Overview
Problem
Distributed antenna systems face challenges with increased size and cost due to the need for high power amplifiers for multi-band support and varying frequency bands, leading to limitations in unified design, management, and operation.
Innovation Solution
An amplification device that includes a first amplifier to amplify a multi-band signal to a first level, a separating unit to split the signal into different frequency bands, and a second amplifier to further amplify the signal to a second level, allowing for efficient management and operation of amplifiers with different gains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high power amplifiers are used for each band to support multi-band service, then the amplification capability for each band is improved, but the size and manufacturing cost of the distributed antenna system increases
Solution Approach 1:
The patent divides the multi-band signal into separate frequency bands using a separating unit (such as a diplexer or filter bank), allowing each band to be processed independently. This segmentation enables the use of lower gain amplifiers for each band rather than requiring high power amplifiers for all bands simultaneously, thereby reducing overall system size and cost while maintaining amplification capability for each individual band
Solution Approach 2:
The patent employs a single distributed antenna system that can handle multiple frequency bands through a unified architecture with a separating unit. This multi-functional approach allows one system to serve multiple bands without requiring separate high power amplifiers for each band, achieving cost and size efficiency while maintaining versatility across different frequency ranges
2Power
If amplifiers with different gains are used for various frequency bands, then the signal amplification for each band is optimized, but the unified design, management and operation becomes limited
Solution Approach 1:
By segmenting the signal processing into separate bands with individual amplifiers, the system can optimize gain for each band while maintaining a unified control architecture. The separating unit creates independent signal paths that can be managed separately, yet the overall system remains under unified control through the common distributed antenna system framework
Solution Approach 2:
The patent enables dynamic gain adjustment for different frequency bands through the separating unit and individual amplifiers. Each band can have its gain dynamically optimized based on signal conditions while the system maintains unified management capabilities through the overall system architecture, allowing flexible adaptation to different operational requirements
Data Source
AI summary
According to one mode of the inventive concept, an amplification device includes a first amplifier configured to amplify an input multi-band signal to a first level, a separating unit configured to separate the multi-band signal having the first level into a first band signal and a second band signal, and a second amplifier configured to amplify the second band signal to a second level.