4P4T Multiway Switch for 5G SRS Antenna Link Loss
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Solution Overview
Problem
Current radio frequency architectures in 5G mobile communication systems face challenges in efficiently supporting four-antenna switching for SRS transmission, leading to increased link loss and suboptimal data transmission performance due to the complexity of existing switch configurations.
Innovation Solution
A 4P4T multiway switch is introduced, integrating all or part of the switches into a simplified four-pole n-throw (4PnT) antenna switch, reducing the number of series switches and optimizing transmission and reception performance by enabling a dual-frequency single-transmit mode with four antennas that transmit SRS in turn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex switch configuration is used to support four-antenna switching for SRS transmission, then the antenna switching function is achieved, but link loss increases and data transmission performance deteriorates
Solution Approach 1:
The patent merges multiple switch functions into a single 4P4T multiway switch component, integrating all or part of the switches into a simplified four-pole n-throw antenna switch. This consolidation reduces the number of series switches in the signal path, thereby reducing cumulative link loss while maintaining the required four-antenna switching capability for SRS transmission.
Solution Approach 2:
The 4P4T multiway switch is designed to perform multiple functions: it supports SRS transmission switching across four antennas, enables dual-frequency single-transmit mode operation, and provides both transmission and reception pathways. This multi-functionality eliminates the need for separate switch components for different operations, reducing overall system complexity and link loss.
2Reliability
If a complex switch configuration is used to support four-antenna switching, then the antenna switching function is achieved, but data transmission performance decreases
Solution Approach 1:
By consolidating multiple switch functions into the 4P4T multiway switch, the patent reduces the number of switching stages and associated losses in the signal path. This merging of functions improves data transmission performance by minimizing signal degradation while maintaining comprehensive antenna switching capability.
Solution Approach 2:
The patent transitions from a multi-stage series switch configuration to a single-stage 4P4T multiway switch architecture. This dimensional change in the switching topology allows all four antennas to be accessed through a single switch component, reducing signal path complexity and improving data transmission performance.
3Adaptability or versatility
If multiple series switches are used in the radio frequency architecture, then four-antenna switching is enabled, but device complexity increases
Solution Approach 1:
The patent merges multiple independent switch components into a single 4P4T multiway switch with four poles and four throws. This consolidation reduces the number of discrete components and interconnections required, significantly simplifying the radio frequency system architecture while maintaining full four-antenna switching capability.
Solution Approach 2:
The 4P4T multiway switch serves as a universal switching component that handles all four-antenna switching requirements, including SRS transmission, reception, and dual-frequency operation, through a single device. This multi-functionality eliminates the need for multiple specialized switch components, reducing overall system complexity.
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 four throw (T) ports and four pole (P) ports, and the four 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.