High-Frequency Module Switch-Filter Layout for Multi-Mode Sensitivity
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Solution Overview
Problem
Existing high-frequency modules experience deterioration in reception sensitivity when supporting multiple modes such as CA, DC, and MIMO.
Innovation Solution
A high-frequency module with a module substrate, filters, and a switch that allows for different modes of signal transmission and reception, including simultaneous and separate handling of signals in multiple bands, with optimized terminal connections to minimize signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple filters are added to support multiple frequency bands, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal filter configuration where the first filter can handle both first band and second band signals, while the second filter handles both second band and third band signals. This multi-functional design allows the system to support multiple frequency bands without requiring a dedicated filter for each band, thereby reducing overall device complexity while maintaining adaptability.
Solution Approach 2:
The patent employs dynamic switching mechanisms that allow the filter configuration to be reconfigured based on the required frequency band. The system can dynamically select which filters to use and how to connect them, enabling flexible adaptation to different operational scenarios without being locked into a fixed complex configuration.
2Reliability
If filter distance is reduced to improve signal quality, then reception sensitivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different distance constraints to different filter connections based on their specific functional requirements. The first filter's input terminal is positioned closer to the switch terminal than the second filter's input terminal, creating localized optimization where each filter connection has the appropriate distance for its specific signal handling role, rather than applying a uniform distance constraint to all connections.
Data Source
AI summary
On a module substrate, a module includes first and second filters for a first reception band, a third filter for a second reception band, and a switch that selectively connects the filters to antenna terminals. The module is configured to operate in a first mode to simultaneously transmit a signals from the first band (via the first filter but not the second filter) and the second band (via the third filter), a second mode to transmit only the first band signal (via the first filter but not the second filter), and a third mode to simultaneously transmit two first band signals (via the first and second filters, respectively). A distance between an input terminal of the first filter and the switch is shorter than a distance between an input terminal of the second filter and the switch.