毫米波段由于其丰富的频谱资源被视为5G及未来无线通信的主要频段。传统正交振幅调制（QAM）发射机架构在毫米波段面临功率转化效率低、带宽窄、集成难度大等问题。本项目针对这些问题，研究探索CMOS工艺下超宽带高效率的毫米波QAM发射机芯片设计与实现方法，包括高功率转化效率的QAM信号矢量合成方法、大功率矢量信号片上检测分析方法和低成本QAM信号矢量误差消除方法。本项研究将创新性地提出一种适用于毫米波段正交振幅调制的新型I/Q RF-DAC发射机架构，从调制方式、电路实现以及编码算法等科研点入手，为超宽带、高功率转化效率、高输出功率以及低成本的毫米波发射机芯片设计提供可行的系统方案，最终采用65 nm CMOS工艺完成该新型发射机架构的电路设计并流片验证。本项目的研究成果将解决传统发射机架构在毫米波段无法同时实现高速和高功率转化效率的难题，为CMOS毫米波集成电路在超高速无线通信的应用打下基础。

The millimeter-wave frequency band is considered to be the main frequency band for 5G and future wireless communications due to its abundant spectrum resources. However, the conventional quadrature amplitude modulation (QAM) transmitter architecture faces low power conversion efficiency, narrow bandwidth and difficulty in high-integration in the millimeter-wave frequency band. In order to solve these problems, this project will study the design and implementation method of the ultra-wideband and high-efficiency millimeter-wave QAM transmitter in CMOS, including the QAM signal synthesis method with high power conversion efficiency, the on-chip detection and analysis method of high-power vector signals and the low-cost vector error elimination method for QAM signals. This project will innovatively propose a new I/Q RF-DAC transmitter architecture supporting millimeter-wave quadrature amplitude modulation. Starting from the research of modulation, circuit implementation and coding algorithms, this project will provide a feasible system plan for the design of millimeter-wave transmitter chip with ultra-wideband, high power conversion efficiency, high output power and low cost. Finally, the proposed transmitter architecture will be implemented in 65 nm CMOS and verified by measurement equipments. The problem that conventional millimeter-wave transmitters cannot simultaneously support high-speed and high-efficiency modulation would be solved by the outcome of the project, which will make a good foundation for the application of CMOS millimeter-wave integrated circuits in ultra-high-speed wireless communication.