4P8T Multiway Switch for 5G SRS Antenna Selection
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Solution Overview
Problem
Current radio frequency systems in 5G mobile communication devices face challenges in efficiently switching sounding reference signals (SRS) across four antennas, leading to increased hardware complexity and link loss, which affects transmission and reception performance.
Innovation Solution
A simplified 4P8T antenna switch architecture is introduced, reducing the number of series switches and integrating them into the 4P8T switch, thereby optimizing the transmission and reception performance by coupling eight T ports with four P ports, each T port fully coupled with all P ports, and implementing an SRS transmit function through the four antennas in turn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional RF switching architectures are used to switch SRS across four antennas, then antenna selection functionality is achieved, but hardware complexity increases and link loss increases
Solution Approach 1:
The patent integrates multiple switching functions into a single 4P8T multiway switch component, combining what would traditionally require multiple separate switches into one unified device. This merging approach maintains the antenna selection functionality while reducing the overall number of discrete components and simplifying the hardware architecture.
Solution Approach 2:
The 4P8T multiway switch is designed to perform multiple functions: it can switch between four different antennas, support multiple RF signal paths, and enable flexible antenna selection for SRS transmission. This universal component replaces what would traditionally require multiple specialized switches, thereby reducing hardware complexity while maintaining adaptability.
2Adaptability or versatility
If traditional RF switching architectures are used to switch SRS across four antennas, then antenna selection functionality is achieved, but link loss increases
Solution Approach 1:
By consolidating multiple switching operations into a single 4P8T switch component, the signal passes through fewer discrete switching points, reducing cumulative insertion loss and improving overall link quality while maintaining antenna selection capability.
3Ease of operation
If multiple series switches are used in RF signal path, then switching functionality is achieved, but transmission and reception performance deteriorates
Solution Approach 1:
The patent replaces multiple series switches with a single 4P8T multiway switch, reducing the number of switching interfaces and potential failure points. This integration maintains full switching functionality while improving signal integrity and reliability of transmission and reception.
Data Source
Figure 1A
Figure 1B~1C
Figure 2
AI summary
A multiway switch (10), a radio frequency system, and a communication device (100) are provided. The multiway switch (10) is configured to be coupled with an antenna system (20) and a radio frequency circuit (30). The multiway switch (10) has eight T ports and four P ports. The eight T ports include two first T ports, and each of the two first T ports is coupled with all the four P ports. The antenna system (20) includes four antennas corresponding to the four ports. The multiway switch (10) is configured to implement a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.