Carrier Aggregation Front-End Modules With Integrated PA/LNA Paths
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Solution Overview
Problem
Current front-end architectures for wireless communication struggle to efficiently support carrier aggregation across multiple frequency bands, leading to signal degradation and reduced performance in uplink and downlink carrier aggregation scenarios.
Innovation Solution
The implementation of a front-end module that includes power amplifiers with envelope tracking, multiplexers, duplexers, low noise amplifiers, and antenna switch modules, configured to process signals across various frequency bands using frequency division duplex and time division duplex schemes, along with band-specific filters and notch filters to enhance signal processing and reduce signal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional front-end architectures are used to support carrier aggregation, then device complexity is reduced, but signal degradation occurs and performance is reduced across multiple frequency bands
Solution Approach 1:
The front-end architecture is segmented into multiple independent front-end modules, each dedicated to specific frequency bands. Each module contains its own power amplifiers, low noise amplifiers, duplexers, and antenna switch modules configured for particular bands. This segmentation prevents signal degradation by isolating band-specific processing while maintaining overall system functionality across aggregated carriers.
Solution Approach 2:
The patent transitions from a planar two-dimensional arrangement of components to a three-dimensional stacked architecture. Multiple front-end modules are vertically stacked and interconnected, allowing simultaneous support for multiple frequency bands without increasing horizontal device footprint. This dimensional change enables complex carrier aggregation support while managing device complexity through vertical integration.
2Productivity
If multiple frequency bands are aggregated to increase data bandwidth, then data transmission speed increases, but signal degradation occurs leading to reduced performance
Solution Approach 1:
The system segments carrier aggregation into multiple independent front-end modules, each optimized for specific frequency bands. Each module processes signals independently through dedicated power amplifiers and low noise amplifiers, preventing inter-band signal interference and degradation. This enables high-speed data transmission across aggregated bands while maintaining signal quality through isolated processing paths.
Solution Approach 2:
Each front-end module is configured with local optimizations for its specific frequency band, including band-specific power amplifier settings, low noise amplifier configurations, and duplexer arrangements. This local quality approach ensures that each band is processed with optimal parameters, maintaining signal quality while enabling high-speed transmission across multiple aggregated carriers.
3Power
If power amplifiers are used to amplify signals across multiple frequency bands, then signal strength increases, but efficiency decreases due to lack of band-specific optimization
Solution Approach 1:
Power amplifiers are segmented into separate modules for different frequency bands, each optimized for its specific band characteristics. This segmentation allows each power amplifier to operate at peak efficiency for its designated band while maintaining high signal strength. The modular architecture enables independent optimization of each amplifier without compromising overall system performance.
Solution Approach 2:
Each power amplifier module is locally optimized for its specific frequency band with tailored design parameters, matching networks, and operating conditions. This local quality approach maximizes power amplifier efficiency for each band while maintaining high signal strength, avoiding the energy inefficiency of using a single non-specific amplifier across multiple bands.
4Area of stationary object
If a compact front-end architecture is used to reduce device size, then device dimensions are reduced, but signal processing capability across multiple bands is compromised
Solution Approach 1:
The patent employs a three-dimensional stacked architecture where multiple front-end modules are vertically arranged and interconnected. This dimensional transition from 2D to 3D space enables compact device footprint by utilizing vertical space. Each stacked module maintains full multi-band signal processing capability through integrated components, achieving both compact size and versatile multi-band functionality simultaneously.
Solution Approach 2:
Multiple front-end modules are nested in a stacked configuration, with each module containing complete signal processing chains for specific frequency bands. This nesting approach packs multiple functional units into a compact vertical arrangement, reducing overall device footprint while preserving full multi-band signal processing capability through hierarchical integration.
Data Source
AI summary
Disclosed herein are front-end modules that support carrier aggregation. Wireless communication configurations are disclosed that include a plurality of such front-end modules to support uplink and/or downlink carrier aggregation. Individual front end modules include a power amplifier module to amplify signals received at a transceiver port and a low-noise amplifier module to amplify signals received at an antenna port. The front-end modules include a multiplexer and an antenna switch module with a plurality of filters and duplexers between them along a corresponding plurality of paths. One path processes frequency division duplex (FDD) signals and another path processes time division duplex (TDD) signals. The front-end modules amplify TDD signals while received FDD signals are directed off module for amplification.