Antenna Group Switching Layout for Low-Loss 4x4 MIMO Reception
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Solution Overview
Problem
The existing radio frequency systems in 5G mobile communication devices face challenges in optimizing sensitivity and reducing noise figure, particularly due to high insertion loss in the RF front-end design, which affects the performance of downlink 4×4 MIMO and four-way diversity reception.
Innovation Solution
A radio frequency system with a higher degree of integration, featuring a radio frequency transceiver, processing circuit, and antenna groups, where the antennas are divided into groups and modules are disposed adjacent to each other to reduce insertion loss, and include receiving and transmitting modules with integrated low noise amplifiers and transfer switches to optimize signal processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices are separated in the RF system architecture, then device complexity and adaptability are improved, but insertion loss increases and sensitivity deteriorates
Solution Approach 1:
The patent merges the RF processing circuit and antenna switching network into an integrated RF system architecture. The processing circuit is directly coupled with antenna groups, eliminating separate connection paths and reducing insertion loss while maintaining system adaptability through integrated switching control.
Solution Approach 2:
The patent implements a nested structure where the RF processing circuit is integrated within the RF system architecture, and antenna switching networks are nested within the processing circuit. This hierarchical integration reduces the number of external connections and minimizes energy loss while preserving functional versatility.
2Reliability
If modules are disposed adjacent to antenna groups with integrated low noise amplifiers, then sensitivity is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions including low noise amplifiers, switching networks, and processing circuits into integrated modules that are disposed adjacent to antenna groups. This merging approach improves sensitivity by reducing insertion loss while managing complexity through functional integration rather than separate components.
Solution Approach 2:
The RF processing circuit is designed with multi-functional capabilities, serving as both a signal processing unit and an antenna switching control unit. This universal design improves sensitivity through integrated low noise amplification while avoiding the complexity of separate dedicated circuits for each function.
3Area of stationary object
If a highly integrated RF system architecture is used, then area and power consumption are optimized, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges the RF processing circuit, antenna switching network, and low noise amplifiers into a highly integrated RF system architecture. This integration significantly reduces the occupied area and power consumption by eliminating separate connection paths and shared resources, while the modular design approach manages manufacturing precision requirements through standardized integration interfaces.
Data Source
AI summary
A radio frequency system, a method for controlling antenna switching, and related products are provided. The radio frequency system supports a simultaneous downlink reception with four antennas and includes m antennas, a radio frequency processing circuit, and a radio frequency transceiver coupled with the radio frequency processing circuit. The m antennas are divided into at least two antenna groups, where m is greater than or equal to 4 and less than or equal to 8. The radio frequency processing circuit is coupled with the at least two antenna groups and includes modules which are the same in number as the at least two antenna groups. Each module is coupled with one antenna group and is disposed adjacent to the antenna group with which the module is coupled. The modules include at least one transmitting module, or at least one transmitting module and at least one receiving module.