Multiplexing Filter Circuit Shared Ports 5G Complexity
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Solution Overview
Problem
The increasing number of frequency bands required for 5G and future wireless communication technologies leads to a complex and costly RF front-end in electronic devices, due to the need for additional filter circuitry and components such as switching components and amplifiers.
Innovation Solution
A multiplexing filter circuit with shared ports is introduced, which includes multiple filters with shared input and output ports. This arrangement allows for the formation of different filter groups based on the shared ports, reducing the need for additional switch throws and amplifiers, thereby lowering costs and reducing device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional filter circuitry and switching components are incorporated to support more frequency bands, then carrier aggregation capability and bandwidth are improved, but device complexity and cost increase
Solution Approach 1:
Multiple filters are combined into a single multiplexing filter circuit that shares common input and output ports. The circuit integrates multiple filtering functions (different frequency bands) into one unified structure, eliminating the need for separate filter circuits and switching components for each frequency band, thereby reducing device complexity while maintaining carrier aggregation capability
Solution Approach 2:
The multiplexing filter circuit is designed to perform multiple filtering functions simultaneously for different frequency bands through shared ports. A single circuit structure handles multiple carriers and frequency bands, making the filter circuit universal and adaptable to various carrier aggregation configurations without requiring additional dedicated components
2Adaptability or versatility
If additional filter circuitry and amplifiers are incorporated to support more frequency bands, then signal processing capability is improved, but device size increases
Solution Approach 1:
Multiple filter circuits are merged into a single multiplexing filter circuit with shared input and output ports. This consolidation integrates multiple frequency band processing functions into one compact unit, significantly reducing the overall device volume and eliminating the space required for separate filter circuits and associated switching components
Solution Approach 2:
The multiplexing filter circuit provides universal support for multiple frequency bands and carrier aggregation configurations through its shared port architecture. This multi-functional design eliminates the need for multiple dedicated filter circuits, thereby reducing device size while maintaining comprehensive frequency band support capability
3Adaptability or versatility
If additional switching components are incorporated to manage multiple frequency bands, then frequency band switching capability is improved, but component count and cost increase
Solution Approach 1:
Multiple switching functions are merged into the multiplexing filter circuit's shared port structure. The circuit inherently manages frequency band switching through its multiplexing architecture without requiring additional external switching components, thereby reducing the total component count while maintaining full frequency band switching capability
Data Source
AI summary
An apparatus is disclosed for a multiplexing filter circuit (MFC). In example aspects, the MFC includes multiple filters, with each respective filter of the multiple filters having a respective distinct passband that corresponds to a frequency band. The multiple filters include a first group of filters and a second group of filters that is different from the first. The MFC includes a first plurality of nodes coupled between the multiple filters and an antenna port, with the first plurality of nodes including a first node coupled between the first group of filters and the antenna port. The MFC includes a second plurality of nodes coupled between the multiple filters and processing circuitry, with the second plurality of nodes including a first node coupled between the second group of filters and the processing circuitry. The first and second groups of filters each include a filter of the multiple filters in common.