Supply-Scaling for Efficiency Enhancement in Distributed Power Amplifiers

被引：52

作者：

Fang, Kelvin ^{[1
]}

Levy, Cooper S. ^{[1
]}

Buckwalter, James F. ^{[2
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[2] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2016年 / 51卷 / 09期

基金：

美国国家科学基金会;

关键词：

Distributed amplifiers; millimeter-wave amplifiers; wideband power amplifiers; SiGe BiCMOS;

D O I：

10.1109/JSSC.2016.2584639

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：

Distributed amplifiers (DAs) feature large bandwidth but relatively low gain and power efficiency. This paper presents a supply-scaling technique to improve the efficiency of a mm-wave DA while maintaining a broadband 50 Omega match. An analysis of interstage load modulation and the effects of shunt dc-feed inductors on distributed operation is provided. A single-ended, eight-stage DA is designed in a 90 nm SiGe BiCMOS process. The fabricated amplifier has a gain of 12 dB over a 3 dB bandwidth from 14-105 GHz. The measured peak output power is 17 dBm with a peak power-added efficiency (PAE) of 12.6% at 50 GHz and 3 dB power bandwidth greater than 70 GHz. The DA occupies an area of 2.65 mm x 0.57 mm, and total dc power consumed from four scaling voltage supplies is 297 mW.

引用

页码：1994 / 2005

页数：12

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