Mixed-Signal Doherty Power Amplifiers in CMOS

被引：0

作者：

Wang, Hua ^{[1
]}

Hu, Song ^{[1
]}

Kousai, Shouhei ^{[2
]}

机构：

[1] Georgia Inst Technol, Atlanta, GA 30308 USA

[2] Toshiba Co Ltd, Kawasaki, Kanagawa 2128520, Japan

来源：

2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2016年

关键词：

Antenna mismatch; CMOS integrated circuits; digital; Doherty; mixed-signal; power amplifier; transformer;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

There is an increasing interest to explore novel Doherty power amplifier (PA) architectures by utilizing digitally intensive architectures, i.e., RF power DACs, and mixed-signal techniques. In this paper, we will first review recent mixed-signal PA development. We will then present two mixed-signal Doherty PAs in CMOS. These digitally intensive designs enable precise controls of the Doherty main/auxiliary amplifiers to achieve optimum active load modulation for back-off efficiency enhancement. Moreover, the reprogramming nature of these mixed-signal Doherty PAs allows linearity enhancement and robust Doherty operations under antenna impedance variations. In addition, these mixed-signal PAs offer unique flexibility and allow hybrid integration with other PA techniques, e.g., Class-G operation, for further efficiency and linearity enhancement.

引用

页数：3

共 9 条

[1]

Doherty W.H., 1936, US Patent, Patent No. [2210028A, 2210028]

[2]

Hu S, 2014, IEEE RAD FREQ INTEGR, P235, DOI 10.1109/RFIC.2014.6851707

[3]

Hu S, 2015, ISSCC DIG TECH PAP I, V58, P44, DOI 10.1109/ISSCC.2015.7062917

[4] Design of A Transformer-Based Reconfigurable Digital Polar Doherty Power Amplifier Fully Integrated in Bulk CMOS [J].