Adaptive Voltage-Controlled Frequency Multiplier for Stable LO Power
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Solution Overview
Problem
Current frequency multipliers in wireless communication systems face challenges in maintaining stable output power across a wide range of input levels, leading to inconsistent conversion gain and reduced performance, especially in high-frequency bands like terahertz frequencies used in 6G communication systems.
Innovation Solution
A frequency multiplier is designed with an active load and a reconfigurable feedback circuit that includes a voltage control block to adaptively adjust the power applied to the load, allowing for stable output power maintenance across varying input levels through self-biasing and feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional frequency multipliers are used without adaptive voltage control, then the device complexity is low, but the output power stability deteriorates across varying input levels
Solution Approach 1:
The patent implements a feedback mechanism where the voltage controller receives feedback about the input signal level and adjusts the voltage applied to the active load accordingly. This closed-loop control ensures that the frequency multiplier maintains stable output power across varying input levels, directly resolving the contradiction between reliability and complexity by introducing intelligent control.
Solution Approach 2:
The patent employs dynamic voltage adjustment through the voltage controller that adapts the supply voltage to the active load based on real-time input signal conditions. This dynamic behavior allows the system to maintain optimal performance across different operating points, transforming a static circuit into an adaptive system that resolves the stability-complexity tradeoff.
2Reliability
If the voltage control block is added to adaptively adjust power, then the output power stability improves, but the device complexity increases
Solution Approach 1:
The voltage controller automatically adjusts the voltage to the active load based on feedback from the input signal level, enabling the circuit to self-regulate its operating conditions. This self-service mechanism maintains consistent conversion gain without requiring external intervention or complex control systems, balancing reliability improvement with acceptable complexity.
3Adaptability or versatility
If active load with feedback circuit is used, then the adaptability to varying input levels improves, but the device complexity increases
Solution Approach 1:
The patent changes the voltage parameter applied to the active load dynamically based on input signal characteristics. By controlling the voltage parameter, the system adapts to varying input power levels and maintains optimal conversion gain, demonstrating how parameter control achieves adaptability while managing complexity through focused adjustment of a single critical parameter.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system or a 6th-Generation (6G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system. A frequency multiplier of a wireless communication system is provided. The frequency multiplier includes an input circuit to which a local oscillator (LO) signal is input, a multiplier circuit having one end connected to the input circuit and another end connected to a lower terminal of a load circuit, a load circuit having an upper terminal connected to a voltage controller, and a voltage controller configured between the upper terminal of the load circuit and an input power source, wherein the voltage controller may be configured to drop a voltage between the input power source and the upper terminal of the load circuit and reinput a feedback voltage based on an upper terminal voltage of the load circuit to the voltage controller, and a method of multiplying a frequency using the same.