A CMOS power amplifier using an active balun as a driver stage to enhance its gain

被引：4

作者：

Sim, Yonghun ^{[1
]}

Park, Jonghoon ^{[1
]}

Yoo, Jinho ^{[1
]}

Lee, Changhyun ^{[1
]}

Park, Changkun ^{[1
]}

机构：

[1] Soongsil Univ, Sch Elect Engn, Coll Informat Technol, 369 Sangdo Ro, Seoul 06978, South Korea

来源：

MICROELECTRONICS JOURNAL | 2017年 / 63卷

关键词：

Active balun; CMOS; Differential; Gain; Power amplifier; Transformer; LINEARITY; CIRCUITS;

D O I：

10.1016/j.mejo.2017.04.003

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：

In this study, we design a differential power amplifier using a 110-nm RF CMOS process. To improve amplifier gain, we propose an active balun as a driver stage of the power amplifier. The passive input balun is removed to minimize the substrate loss. In the proposed power amplifier structure, the active balun converts a single-ended signal into a differential signal and at the same time provides sufficient gain as the driver stage of the power stage. To verify the feasibility of the proposed power amplifier structure, we designed a typical and the proposed power amplifier using identical processes and with the same design parameters, except for the driver stage and the input transformer of the typical power amplifier. The measured improvement of the gain of the proposed power amplifier is approximately 4.2 dB compared to that of the typical power amplifier. From the measured results, we successfully prove the feasibility of the proposed power amplifier.

引用

页码：160 / 169

页数：10

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