RF Circuit Carrier Aggregation Phase Shifting
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Solution Overview
Problem
Current RF circuits in mobile electronic devices lack diversity in carrier aggregation, failing to meet varied frequency band requirements across different communication markets due to limited and undiversified frequency band combinations.
Innovation Solution
The RF circuit incorporates a switch chip with phase shifter modules and a combiner to adjust phase shifts for high, medium, and low-frequency RF signals, allowing for selective path cutting and aggregation, enabling diverse carrier aggregation by combining high, medium, and low-frequency signals to form aggregation signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional RF circuit architecture is used, then device complexity is reduced, but carrier aggregation diversity is limited and cannot meet varied frequency band requirements
Solution Approach 1:
The RF circuit is segmented into multiple independent functional modules including switching module, filtering module, phase shifting module, and signal combining module. Each module handles specific frequency bands or signal paths, enabling flexible configuration for different carrier aggregation scenarios while maintaining manageable complexity through modular design
Solution Approach 2:
The RF circuit is designed with multi-functional components that can operate across multiple frequency bands. The switching module can route signals from different antennas to different RF paths, the filtering module handles multiple frequency ranges, and the phase shifting module adjusts phases for various signal combinations, making the circuit universally applicable to diverse carrier aggregation requirements
2Adaptability or versatility
If multiple frequency bands are supported, then communication market coverage is improved, but signal interference between bands increases
Solution Approach 1:
The filtering module extracts and separates signals from different frequency bands before they enter the signal processing chain. By placing band-specific filters at strategic points in the RF circuit, unwanted frequency components are removed early, preventing inter-band interference while preserving the desired frequency bands for further processing
Solution Approach 2:
The switching module acts as an intermediary between multiple antennas and RF signal paths. It selectively connects specific antennas to specific RF paths based on the active frequency bands, preventing simultaneous processing of interfering signals from different bands through the same path while maintaining flexibility to support multiple bands at different times
3Manufacturing precision
If phase shifting and path cutting are implemented, then signal aggregation accuracy is improved, but device complexity increases
Solution Approach 1:
The switching module and phase shifting module are integrated into a unified signal processing architecture where path selection and phase adjustment work together. The filtered signals from multiple frequency bands are combined in the signal combining module after undergoing coordinated phase shifts, achieving accurate signal aggregation while reducing overall complexity through functional integration
Data Source
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AI summary
Disclosed is a radio frequency circuit. The radio frequency circuit comprises a first switch, a second switch, a third switch, a first phaser module, a second phaser module, and a combiner. The first switch and the second switch can control a high-frequency signal and an intermediate-frequency signal to implement carrier aggregation to obtain a first aggregation signal, and the combiner performs carrier aggregation on the first aggregation signal and a low-frequency signal. The present application further provides an antenna apparatus and an electronic device.