RF Module Switching for Multi-Band Antenna Sharing
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Solution Overview
Problem
Existing radio-frequency modules struggle to efficiently connect multiple communication band groups to a common antenna, requiring individual design and manufacturing for each specific request.
Innovation Solution
A radio-frequency module design that includes multiple filters for different communication band groups, a switch to connect these filters, and external connection terminals, allowing for common use across various communication band groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual design and manufacturing is performed for each specific request, then the radio-frequency module can be optimized for specific communication band groups, but the manufacturing cost and complexity increase
Solution Approach 1:
The radio-frequency module is designed with multiple filters (first filter for first communication band group, second filter for second communication band group) and a switch that can connect different filters to antennas. This universal design allows the same module to serve multiple communication band groups and antenna configurations without requiring individual designs for each specific request, thereby reducing manufacturing complexity while maintaining optimization for each band group
2Adaptability or versatility
If a common antenna is shared via multiplexer for multiple communication band groups, then the device versatility improves, but the electrical characteristics may deteriorate
Solution Approach 1:
The radio-frequency module segments the signal paths by providing separate filters for each communication band group (first filter for first band group, second filter for second band group). Each filter is optimized for its specific band group, ensuring good electrical characteristics. The switch then segments the connection to the common antenna, allowing selective connection of different filters to the antenna based on the required communication band group
Solution Approach 2:
The switch acts as an intermediary component between the multiple filters and the common antenna. It mediates the connection by selectively connecting different filters to the antenna based on the required communication band group, thereby enabling versatility while maintaining good electrical characteristics through proper signal routing
3Adaptability or versatility
If multiple filters and switches are included to support various configurations, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The radio-frequency module uses a universal design where the same set of filters and switch can support both single antenna and dual antenna configurations. The switch can connect different filters to a single antenna or to different antennas, providing versatility without requiring separate designs for each configuration type
Data Source
AI summary
A radio-frequency module includes multiple external connection terminals. The multiple external connection terminals include an antenna connection terminal connected to one end of a filter and another end of a filter, an antenna connection terminal connected to the one end of the filter, an antenna connection terminal connected to the other end of the filter, an antenna connection terminal connected to a duplexer and a transmission-reception filter via a switch, and an antenna connection terminal connected to a duplexer and a transmission-reception filter via the switch.