RF Amplifier Power Segmentation for LTE and 5G Signal Quality
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Solution Overview
Problem
Conventional communication systems face limitations in transmission power level due to strict quality requirements for radio frequency signals, particularly when using different modulation methods, which restrict the ability to satisfy quality requirements in environments where power level constraints are not applicable.
Innovation Solution
The implementation of a radio frequency circuit with separate power supply voltages for amplifying LTE and 5G NR or WLAN signals, where the second power supply voltage for 5G NR or WLAN signals is greater than the first for LTE signals, allowing for improved amplifier performance and relaxed transmission power level constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission power level is limited to satisfy quality requirements for radio frequency signals, then signal quality is improved, but the transmission power level becomes too restrictive for environments where power level constraints cannot be applied
Solution Approach 1:
The amplifier circuit is divided into multiple independent amplifier units, each dedicated to a specific communication standard (LTE, 5G NR, WLAN). Each amplifier has its own power supply voltage control, allowing independent optimization of transmission power for each standard without affecting others, thus satisfying quality requirements while maintaining power level flexibility.
Solution Approach 2:
Different power supply voltages are applied to different amplifier units based on their specific requirements. The control circuit selectively supplies appropriate power levels to each amplifier according to the modulation method and signal characteristics, achieving local optimization of signal quality while maintaining overall system adaptability.
2Adaptability or versatility
If different modulation methods are used for radio frequency signals, then communication versatility is improved, but the quality requirement for radio frequency signals becomes harder to satisfy
Solution Approach 1:
The system segments amplification functions into separate amplifier units, each optimized for specific modulation methods. This allows the system to handle diverse modulation schemes (QPSK, 16QAM, 64QAM, 256QAM, etc.) while maintaining signal quality through dedicated amplification paths for each standard.
Solution Approach 2:
The control circuit dynamically selects and configures appropriate amplifiers and power supply voltages based on the detected modulation method and communication standard. This dynamic adaptation enables the system to optimize signal quality for each specific modulation scheme while maintaining versatility across multiple standards.
3Device complexity
If a single amplifier is used for multiple communication standards, then device complexity is reduced, but signal quality and performance optimization becomes difficult
Solution Approach 1:
Instead of using a single amplifier for all standards, the system segments amplification into multiple dedicated units. Each amplifier is optimized for specific communication standards and modulation methods, achieving superior signal quality while the modular architecture keeps overall system complexity manageable through standardized control mechanisms.
Data Source
AI summary
A radio frequency circuit includes: an amplifier circuit configured to amplify a first radio frequency signal using a first power supply voltage, and amplify a second radio frequency signal using a second power supply voltage. The first radio frequency signal is a signal in a first band for Long Term Evolution (LTE), the second radio frequency signal is a signal in a second band for 5th Generation New Radio (5G NR) or a wireless local area network (WLAN) signal, and in a state in which a first predetermined condition regarding the first radio frequency signal and the second radio frequency signal is satisfied, a value of the second power supply voltage is greater than a value of the first power supply voltage.