Wideband Modular Filter/Duplexer Architecture for Band Updates
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Solution Overview
Problem
Existing remote units in distributed antenna systems (DAS) are inflexible and costly due to the need for custom-designed integrated blocks that cannot be modified after deployment, and require complete replacement if frequency bands need to be added or components fail.
Innovation Solution
A modular filter system with wideband combiners and filter modules that allow for interchangeable filter modules to support multiple frequency bands, enabling flexible configuration and maintenance without replacing the entire unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If customized integrated blocks are designed and manufactured to meet individual customer requests, then the system can support multiple frequency bands with a single antenna system, but the cost and time to market increase significantly
Solution Approach 1:
The system is divided into separate functional modules: a common integrating structure and individual duplexer modules. Each duplexer module can be independently manufactured and then integrated into the common structure, allowing for standardized production of components while maintaining the ability to support multiple frequency bands through modular assembly.
Solution Approach 2:
The common integrating structure is designed to universally accommodate multiple types of duplexer modules through standardized interfaces. This universal platform can support different frequency bands by simply changing the duplexer modules, eliminating the need to manufacture entirely new integrated blocks for each frequency band requirement.
2Reliability
If the entire integrated block is replaced when a component fails, then system reliability is maintained, but the maintenance cost and downtime increase
Solution Approach 1:
The system is segmented into replaceable duplexer modules that can be independently serviced. When a component fails within a duplexer module, only that specific module needs to be replaced rather than the entire integrated block, significantly reducing maintenance costs and downtime while maintaining system reliability.
3Adaptability or versatility
If modifications are made to the integrated block after deployment, then frequency band requirements can be updated, but the entire integrated block must be redesigned and manufactured
Solution Approach 1:
The common integrating structure provides a universal platform that can accept different duplexer modules for various frequency bands. When frequency band requirements need to be updated, only the specific duplexer modules need to be changed while reusing the existing common integrating structure, dramatically reducing the time and resources required for modifications.
Data Source
AI summary
A modular filter system includes a wideband combiner, which includes an antenna connector and wideband filter connectors, and multiple filter modules. A first filter module includes a first connector configured to pass a first frequency band. The first filter module includes a combiner connector configured to pass the first frequency band, which is coupled to the combiner connector. The second filter module includes second, third, fourth, and fifth connectors configured to pass second, third, fourth, and fifth frequency bands, respectively. The second filter module further includes a combiner connector configured to pass the second, third, fourth, and fifth frequency bands, which are coupled to the combiner connector.