Multi-Antenna Signal Amplifier with Simplified Combining-Splitting Network
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Solution Overview
Problem
Conventional mobile phone signal amplifiers suffer from significant losses in downlink noise figure and uplink output power due to complex multiplex combining-splitting networks, which limit the transmission distance and increase power consumption, making them costly and inefficient.
Innovation Solution
A multi-antenna system signal amplifier with an outdoor device and an indoor device, utilizing a simplified duplexer-based combining-splitting network and RF coaxial cable to optimize insertion loss, reducing noise figure and power consumption while increasing transmission distance and reducing the size and cost of the amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex multiplex combining-splitting network is used to handle multiple frequency bands, then the amplifier can support broadband communication, but the loss increases significantly and the downlink noise figure deteriorates
Solution Approach 1:
The patent divides the broadband signal handling into separate frequency band processing paths. Each frequency band has its own dedicated amplifier and combiner, avoiding the need for a complex multi-stage multiplex combining-splitting network. This segmentation reduces cumulative losses while maintaining broadband capability through parallel processing of different frequency bands.
2Adaptability or versatility
If multiple stages of combiner and divider are used to combine a large number of ports, then the amplifier can handle multiple frequency bands, but the losses are superimposed stage by stage, greatly increasing downlink noise figure and uplink output power loss
Solution Approach 1:
The patent extracts and removes the complex multiplex combining-splitting network from the system. Instead, it uses a simplified architecture where each frequency band is processed independently through its own amplifier and combined at a single stage, eliminating the need for multiple cascaded combining-splitting stages and reducing overall system complexity.
3Adaptability or versatility
If full-frequency band antennas are used to meet broadband requirements, then the amplifier supports wide frequency ranges, but specifications of part of the frequency band are compromised
Solution Approach 1:
The patent applies local quality by providing dedicated amplifiers and processing paths for different frequency bands. Each band can be optimized with appropriate gain, noise figure, and linearity specifications tailored to its specific requirements, rather than using a single full-frequency band antenna and amplifier that must compromise to meet average performance across all bands.
Data Source
AI summary
The present disclosure provides a signal amplifier of a multi-antenna system including an outdoor device communicating with base stations and an indoor device communicating with a client. The outdoor device includes a plurality of outdoor antennas, a first bidirectional signal amplifying link and a first combining-splitting network. A first end of the first bidirectional signal amplifying link is coupled to the outdoor antennas. A second end of the first bidirectional signal amplifying link is coupled to the first combining-splitting network. The indoor device includes an indoor antenna and a feeder. A first end of the feeder is coupled to the indoor antenna. A second end of the feeder is coupled to the first combining-splitting network through a radio frequency (RF) coaxial cable.