RF Switch Circuit Layout for Four-Antenna 5G Transmission
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Solution Overview
Problem
Antenna performance imbalance and poor antenna switching performance due to layout and radio frequency wiring loss in 5G mobile communications technology, particularly in 2T4R mode, where only three- or two-antenna switching can be implemented instead of four-antenna switching.
Innovation Solution
A radio frequency circuit design that includes a first switch connecting a transmit port to either a first or second radio frequency module, allowing selective connection to different antenna arrays to reduce path loss and improve antenna switching performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If four antennas are switched in 2T4R mode, then antenna switching capability is improved, but antenna performance becomes poor due to layout and space reasons and radio frequency wiring loss causes antenna performance imbalance
Solution Approach 1:
The patent divides the radio frequency circuit into separate first and second radio frequency modules, each connected to different antenna arrays. This segmentation allows independent optimization of each module's connection path, reducing the impact of wiring loss on overall antenna performance balance while maintaining four-antenna switching capability.
Solution Approach 2:
The patent introduces a first switch as an intermediary component between the transmit port and the radio frequency modules. This switch enables flexible signal routing to different antenna arrays, allowing the system to select optimal paths that minimize wiring loss and maintain antenna performance balance during four-antenna switching operations.
2Device complexity
If only a TX1 path is used for fixed transmission in 1T4R, then transmission path is simplified, but only three- or two-antenna switching can be implemented instead of four-antenna switching
Solution Approach 1:
The patent designs the radio frequency circuit with universal first and second radio frequency modules that can handle both 1T4R and 2T4R modes. The modules are configured to support multiple antenna arrays, enabling the system to perform four-antenna switching in 2T4R mode while maintaining simplified transmission paths in 1T4R mode, thus achieving multi-functionality without excessive complexity.
Data Source
AI summary
The present invention provides a radio frequency circuit and an electronic device. The radio frequency circuit includes a radio frequency transceiver having a first transmit port, a first radio frequency module connected to a first antenna array, a second radio frequency module connected to a second antenna array, and a first switch. A first input terminal of the first switch is connected to the first transmit port, and two output terminals of the first switch are respectively connected to the two radio frequency modules. In a case that the first switch is in a first state, the first transmit port is conductively connected to the first radio frequency module; or in a case that the first switch is in a second state, the first transmit port is conductively connected to the second radio frequency module.