用于正交发生器RC多相网络特性研究

摘要

正交信号发生器广泛应用于正交调制解调器、镜像抑制变频器等，RC多相网络因其结构简单，良好的线性性能而被作为常用的正交发生器。该文基于复信号性质及矩阵理论，推导了RC多相网络传输函数的详细表达式，构建了相关参数，分析了RC多相网络输出信号I/Q的平衡特性，为设计高平衡度的正交发生器提供了理论依据。%The quadrature signal generator is widely used in devices such as the quadrature modulator and image rejection frequency converter. An RC polyphase network is commonly used as a quadrature signal generator because of its simple structure and perfect linear performance. This study derives explicit transfer functions for the RC polyphase network based on the complex signal properties and the matrix theory. Moreover, build-related parameters are determined to analyze the I/Q amplitude and phase balance characteristic of the RC polyphase network, thus providing a theoretical guideline for the design of a high-balance quadrature signal generator.