This paper presents a brief overview of several promising design technologies for high efficiency silicon-based radio frequency （RF） power amplifiers （PAs） as well as the use of these technologies in mobile broadb...This paper presents a brief overview of several promising design technologies for high efficiency silicon-based radio frequency （RF） power amplifiers （PAs） as well as the use of these technologies in mobile broadband wireless communications. Four important aspects of PA design are addressed in this paper. First, we look at class-E PA design equations and provide an example of a class-E PA that achieves efficiency of 65-70% at 2.4 GHz. Then, we discuss state-of-the-art envelope tracking （ET） design for monolithic wideband RF mobile transmitter applications. A brief overview of Doherty PA design for the next-generation wireless handset applications is then given. Towards the end of the paper, we discuss an inherently broadband and highly efficient class-J PA design targeting future multi-band multi-standard wireless communication protocols.展开更多
基于IBM SOI 0.18μm CMOS工艺,设计了一种高功率附加效率(PAE)的E类功率放大器,由驱动级和输出级两级构成。驱动级采用E类结构,使输出级能更好地实现开与关。输出级采用电感谐振寄生电容,提高了效率。输出级的共栅管采用自偏置的方式,...基于IBM SOI 0.18μm CMOS工艺,设计了一种高功率附加效率(PAE)的E类功率放大器,由驱动级和输出级两级构成。驱动级采用E类结构,使输出级能更好地实现开与关。输出级采用电感谐振寄生电容,提高了效率。输出级的共栅管采用自偏置的方式,防止晶体管被击穿。两级之间使用了改善输出级电压和电流交叠的网络。仿真结果表明,在2.8 V电源电压下,工作频率为2.4 GHz时,功率放大器的输出功率为23.17 d Bm,PAE为57.7%。展开更多
文摘This paper presents a brief overview of several promising design technologies for high efficiency silicon-based radio frequency （RF） power amplifiers （PAs） as well as the use of these technologies in mobile broadband wireless communications. Four important aspects of PA design are addressed in this paper. First, we look at class-E PA design equations and provide an example of a class-E PA that achieves efficiency of 65-70% at 2.4 GHz. Then, we discuss state-of-the-art envelope tracking （ET） design for monolithic wideband RF mobile transmitter applications. A brief overview of Doherty PA design for the next-generation wireless handset applications is then given. Towards the end of the paper, we discuss an inherently broadband and highly efficient class-J PA design targeting future multi-band multi-standard wireless communication protocols.
文摘基于IBM SOI 0.18μm CMOS工艺,设计了一种高功率附加效率(PAE)的E类功率放大器,由驱动级和输出级两级构成。驱动级采用E类结构,使输出级能更好地实现开与关。输出级采用电感谐振寄生电容,提高了效率。输出级的共栅管采用自偏置的方式,防止晶体管被击穿。两级之间使用了改善输出级电压和电流交叠的网络。仿真结果表明,在2.8 V电源电压下,工作频率为2.4 GHz时,功率放大器的输出功率为23.17 d Bm,PAE为57.7%。
