RF Front End Module Antenna Coupling for Low Insertion Loss
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Solution Overview
Problem
Existing radio frequency (RF) front end systems struggle to efficiently handle and process signals across multiple frequency bands, particularly in supporting advanced communication features like carrier aggregation and multi-input multi-output (MIMO) communications.
Innovation Solution
The implementation of a radio frequency front end system that includes multiple transmit and receive modules, each capable of handling high band and mid band signals, allowing for direct electrical coupling to antennas without intervening frequency multiplexers or triplexers, and utilizing diplexers for shared access to antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency multiplexers or triplexers are used to handle multiple frequency bands, then signal routing capability is improved, but insertion loss increases and power consumption increases
Solution Approach 1:
The patent removes frequency multiplexers and triplexers from the signal path, directly coupling transmit and receive modules to antennas. This extraction of intermediate components eliminates the insertion loss and power consumption associated with these devices while maintaining the ability to handle multiple frequency bands through direct module-antenna connections.
Solution Approach 2:
The system divides the RF front end into separate transmit and receive modules that can be independently configured for different frequency bands. Each module can be selectively activated for specific bands (e.g., high band or mid band), allowing flexible signal routing without requiring multiplexing components that introduce loss.
2Adaptability or versatility
If frequency multiplexers or triplexers are used to handle multiple frequency bands, then signal routing capability is improved, but device complexity increases
Solution Approach 1:
The patent eliminates frequency multiplexers and triplexers from the architecture, directly connecting transmit and receive modules to antennas. This removal of intermediate components simplifies the overall system structure while maintaining the capability to support multiple frequency bands through direct module-antenna interfaces.
Solution Approach 2:
The transmit and receive modules are designed to be multi-functional, capable of operating across multiple frequency bands (high band and mid band) without requiring separate dedicated components for each band. This universality reduces the number of components needed and simplifies the overall system architecture.
3Adaptability or versatility
If multiple transmit and receive modules are used to support carrier aggregation and MIMO, then communication capability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple transmit and receive modules into a unified RF front end architecture that supports carrier aggregation and MIMO operations. By merging these modules and directly coupling them to antennas without intermediate multiplexing components, the system achieves enhanced communication capability while minimizing the increase in overall device complexity.
Solution Approach 2:
The system employs dynamic configuration of transmit and receive modules, where modules can be selectively activated or deactivated based on the required communication mode (e.g., single-band or carrier aggregation, MIMO configurations). This dynamic approach allows the system to adapt its complexity to the actual communication needs rather than maintaining fixed high complexity for all scenarios.
Data Source
AI summary
A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency range greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency range greater than that of the second mid band receive signal.