Dual Transceiver RF Circuit with Switching Antenna for Multi-RAT Support
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Solution Overview
Problem
Existing electronic devices face challenges in supporting multiple radio communication technologies and frequency ranges due to differences in RF characteristics, leading to complexities in RF circuit configuration and antenna design.
Innovation Solution
The electronic device incorporates a dual-transceiver configuration with a first transceiver processing RF signals for legacy and FR1 frequency ranges, and a second transceiver processing RF signals for FR2 frequency ranges, along with a switching mechanism to connect antenna elements to the appropriate transceivers based on communication modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transceiver is used to support multiple radio access technologies and frequency ranges, then device complexity is reduced, but RF signal processing performance and adaptability deteriorate due to inability to optimize for different frequency characteristics
Solution Approach 1:
The patent divides the RF signal processing function into separate transceivers for different frequency ranges. A first transceiver is dedicated to processing RF signals for legacy RATs and FR1 frequency range, while a second transceiver handles RF signals for FR2 frequency range. This segmentation allows each transceiver to be optimized for its specific frequency characteristics, resolving the contradiction between device simplicity and processing performance.
Solution Approach 2:
The patent implements a switching mechanism that enables antenna elements to be dynamically connected to different transceivers based on the operating frequency range. The same antenna elements can serve FR1 frequencies through the first transceiver and FR2 frequencies through the second transceiver, providing multi-functionality while maintaining optimized signal processing for each frequency band.
2Reliability
If antenna elements are dedicated to specific frequency ranges, then RF signal processing is optimized for that range, but adaptability to support multiple frequency ranges and radio access technologies deteriorates
Solution Approach 1:
The patent employs a dynamic switching mechanism that can reconfigure antenna element connections based on the operating frequency range. The switching part can dynamically connect antenna elements to the first transceiver for FR1 operations or to the second transceiver for FR2 operations. This dynamic reconfiguration enables the system to adapt to different frequency ranges while maintaining optimized signal processing performance for each band.
3Reliability
If separate transceivers are used for different frequency ranges, then RF signal processing performance for each range is optimized, but device complexity and antenna configuration complexity increase
Solution Approach 1:
The patent designs the switching mechanism to enable antenna elements to serve multiple frequency ranges through dynamic connection. The same physical antenna elements can be assigned to the first transceiver for FR1 or to the second transceiver for FR2, eliminating the need for separate dedicated antenna sets for each frequency range. This multi-functionality reduces overall device complexity despite having separate transceivers.
Data Source
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AI summary
An electronic device may include a first circuit and a second circuit. The first circuit may include a processor, and a first transceiver connected to the processor and configured to process a radio frequency (RF) corresponding to a first radio access technology (RAT) and/or a first frequency range (FR1) of a second RAT, and to process an intermediate frequency (IF) corresponding to a third RAT. The second circuit may include a first switching part connected to the first transceiver through a second connection part, and a second transceiver configured to process a RF corresponding to the third RAT and connected to a second antenna array, the first switching part being configured to connect the first transceiver with antenna elements and/or the second transceiver.