Integrated RF Front-End Chip With Embedded Switching for MIMO
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Solution Overview
Problem
Existing RF signal amplification modules integrating amplification, switch, and control chips on a substrate result in bulky, low-integration, and high-cost designs, particularly with gallium arsenide materials, and require complex and costly CMOS-GaAs processes for MIMO applications.
Innovation Solution
An RF front-end chip integrating a logic control circuit, switching circuit, and amplifier module assembly on a single integrated circuit die, with the switching circuit controlling amplifiers across multiple frequency bands, and an RF switch module using series and parallel circuits for efficient power handling and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If amplification chip, switch chip and control chip are integrated onto a substrate, then RF signal amplification function is achieved, but the module becomes bulky with low integration level and high cost
Solution Approach 1:
The patent merges the amplification chip, switch chip, and control chip into a single integrated RF front-end chip. The amplifier module assembly includes integrated amplifier units, switch units, and control circuits all fabricated on the same semiconductor substrate, eliminating the need for separate chips and reducing overall device complexity while maintaining full RF signal amplification functionality across multiple frequency bands
Solution Approach 2:
The integrated RF front-end chip performs multiple functions within a single device: it provides amplification across different frequency bands (low-band, mid-band, high-band), switching control between different signal paths, and integrated logic control. This multi-functional integration resolves the contradiction by achieving versatile RF signal processing without requiring separate specialized chips for each function
2Adaptability or versatility
If amplification chip, switch chip and control chip are integrated onto a substrate, then RF signal amplification function is achieved, but the module becomes bulky with high cost
Solution Approach 1:
The patent combines multiple discrete chips into a single integrated device fabricated using standard semiconductor manufacturing processes. By integrating the amplifier module assembly with all its control and switching circuits on one chip, the patent reduces the number of separate components that need to be manufactured, assembled, and tested, thereby lowering overall manufacturing cost while maintaining full RF signal amplification functionality
3Productivity
If RF front-end module is integrated with RF switch module in MIMO, then signal processing capability is improved, but the circuit becomes bulky with low integration level and high manufacturing cost
Solution Approach 1:
The patent integrates the RF switch module directly into the RF front-end chip architecture. The switch units are embedded within the amplifier module assembly, allowing seamless integration with MIMO signal processing pathways. This integration enables efficient handling of multiple input multiple output signals without requiring separate bulky connection circuits, thereby improving signal processing capability while maintaining high integration level
Solution Approach 2:
The patent employs multi-frequency band amplification modules (low-band, mid-band, high-band) integrated within a single chip architecture. This dimensional organization of frequency bands allows efficient MIMO signal processing by assigning different spatial and frequency resources to different amplifier units, achieving high signal processing capability without increasing physical device complexity
Data Source
AI summary
The present disclosure provides an RF front-end chip, an RF switch module, and an RF communication device. The RF front-end chip includes a logic control circuit, a switching circuit, and an amplifier module assembly that are integrated onto an integrated circuit die, where the logic control circuit is connected to the switching circuit and configured to control the switching circuit, and the switching circuit is integrated into the amplifier module assembly and precedes one or more amplifiers of the amplifier module assembly. By utilizing the RF front-end chip, the integration level of the chip can be improved, and the cost of the chip can be reduced.