Receiving Module Integration for 5G RF Sensitivity
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Solution Overview
Problem
The existing RF system architecture for 5G mobile communication devices faces challenges in reducing insertion loss and improving sensitivity, particularly in the 5G NR system requiring downlink 4x4 MIMO and SRS switching with four antennas, where the sub 6 GHz band experiences higher frequency loss and increased noise figure due to RF cable losses.
Innovation Solution
The proposed solution involves a receiving module and transmitting module design that integrates signal receiving channels with filters and low noise amplifiers, coupled with transfer switches, and a radio frequency system that includes multiple antenna groups, processing circuits, and transceivers, optimizing the degree of integration to reduce insertion loss and enhance sensitivity by reducing noise figure and cable losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If devices are separated in the RF system architecture, then ease of manufacture and maintenance are improved, but insertion loss increases and sensitivity deteriorates
Solution Approach 1:
The patent integrates the receiving module and transmitting module into a unified RF system architecture, where the receiving module includes filter and LNA circuits that are closely coupled with the antenna group. This merging reduces the number of external connections and interfaces, thereby reducing insertion loss while maintaining ease of manufacture through modular integration.
2Device complexity
If devices are separated in the RF system architecture, then device complexity is reduced, but sensitivity deteriorates due to increased noise figure
Solution Approach 1:
The RF system is segmented into distinct functional modules (receiving module with filter and LNA, transmitting module with PA, and antenna group), each optimized for its specific function. The receiving module is further segmented to place the LNA immediately after the antenna connection, minimizing the noise figure and maximizing sensitivity while keeping the overall system manageable in complexity.
Solution Approach 2:
The patent applies local quality optimization by positioning the low noise amplifier (LNA) with specific noise figure characteristics directly at the receiving end of the antenna group, and the power amplifier (PA) with specific gain characteristics at the transmitting end. This localized optimization of component properties improves overall sensitivity without requiring complex system-wide changes.
3Loss of energy
If the degree of integration is increased, then insertion loss is reduced and sensitivity is improved, but device complexity increases
Solution Approach 1:
The receiving module merges the filter and LNA circuits into a single integrated unit that is closely coupled with the antenna group, reducing the number of external connections and interfaces. This integration reduces insertion loss by minimizing signal path length and the number of connectors, while the modular design keeps the complexity manageable through functional consolidation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves the sensitivity of channels by reducing insertion loss and noise figure, optimizing area, cost, and power consumption, while supporting advanced 5G NR features like SRS switching and MIMO, thereby enhancing data transmission performance.
Implementation Method 1
Each of the one or more signal receiving channels includes a filter and a low noise amplifier coupled with the filter
Implementation Method 2
Each of the one or more signal receiving channels includes a filter and a low noise amplifier coupled with the filter
Implementation Method 3
The first transfer switch is coupled with the one or more signal receiving channels and is configured to be coupled with an antenna in the antenna group. The second transfer switch is coupled with the one or more signal receiving channels and is configured to be coupled with at least one of a transmitting module or a radio frequency transceiver
Implementation Method 4
The transmitting module includes a power amplifier (PA), a filter, and a transmit-receive transfer switch
Data Source
Figure 1A~1E2
Figure 1F1~1I1
Figure 1I2~1N1
AI summary
A receiving module and related products are provided. The receiving module is disposed adjacent to an antenna group corresponding to the receiving module and includes one or more signal receiving channels, a first transfer switch, and a second transfer switch. Each of the one or more signal receiving channels includes a filter and a low noise amplifier coupled with the filter. The first transfer switch is coupled with the one or more signal receiving channels and is configured to be coupled with an antenna in the antenna group. The second transfer switch is coupled with the one or more signal receiving channels and is configured to be coupled with a transmitting module and/or a radio frequency transceiver. The first transfer switch or the second transfer switch includes an n1Pn2T switch, and n1 is a positive integer and n2 is an integer greater than or equal to 2.