4P5T Multiway Switch for 5G SRS Antenna Path Loss Reduction
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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 link loss and suboptimal transmission and reception performance due to the complexity of existing switching schemes.
Innovation Solution
A four-pole five-throw (4P5T) multiway switch is introduced, which reduces the number of series switches by integrating some switches into the 4P5T switch, enabling efficient SRS switching across four antennas, thereby optimizing transmission and reception performance by reducing path loss and improving data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing switching schemes are used to switch SRS across four antennas, then the switching function is achieved, but link loss increases and transmission performance deteriorates
Solution Approach 1:
The patent merges multiple switching functions into a single 4P5T multiway switch component, integrating the switching of four antenna ports and five functional modes into one unified device. This consolidation reduces the total number of series switches in the signal path, thereby minimizing cumulative insertion loss and improving link efficiency while maintaining reliable SRS switching across all four antennas.
Solution Approach 2:
The 4P5T multiway switch is designed with universal functionality to handle multiple operations: SRS switching across four antennas, dual-frequency single-transmit mode operations, and support for both transmission and reception paths. This multi-functional design eliminates the need for separate switching components for different functions, reducing overall system complexity and minimizing signal loss through fewer connection points.
2Adaptability or versatility
If multiple series switches are used for antenna switching, then switching capability is achieved, but device complexity increases
Solution Approach 1:
The patent combines multiple independent switching functions into a single 4P5T multiway switch component, integrating four antenna port switching with five functional modes (including dual-frequency single-transmit operations) into one unified device. This consolidation reduces the total number of separate switch components and their interconnections, thereby simplifying the overall device architecture while maintaining full switching capability across all antennas and frequency bands.
Solution Approach 2:
The 4P5T multiway switch is designed as a universal switching component that handles multiple functions: SRS switching across four antennas, dual-frequency single-transmit mode operations, and support for both transmission and reception paths. This multi-functional design eliminates the need for separate switching components for different functions, reducing overall system complexity while maintaining adaptability to various operating modes.
Data Source
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Figure 4A
AI summary
A multiway switch, a radio frequency system, and a wireless communication device are provided. The multiway switch includes five throw (T) ports and four pole (P) ports. The five T ports include one first T port coupled with all of the four P ports. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device operable in a dual-frequency single-transmit mode, to enable a preset function of the electronic device, the antenna system includes four antennas corresponding to the four P ports, and the preset function is a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.