Switching-Mode CMOS Power Amplifier Using a Differentially Coupled Series Inductor

被引：0
|
作者：
Lee, Changhyun [1 ]
Park, Changkun [1 ]
机构：
[1] Soongsil Univ, Sch Elect Engn, 369 Sangdo Ro, Seoul 06978, South Korea
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2019年 / 81卷
关键词：
HIGH-EFFICIENCY; NETWORK; DESIGN;
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：
In this work, we propose a compact CMOS power amplifier using a differentially coupled series inductor for motion detection radar applications. The proposed switching-mode power amplifier is designed with a cascode and differential structure. To realize a compact size matching network, a differentially coupled series inductor is used in the input matching network. In the proposed power amplifier, two typical spiral series inductors for the input matching network are replaced with a single differentially coupled series inductor. As a result, the used chip area of the differentially coupled series inductor is smaller than half that of a typical inductor for the given inductances of each inductor. Additionally, to obtain a high gain characteristic, we adapt modified mode-locking techniques for the power stage of the power amplifier. To verify the feasibility of the power amplifier, we design a 9.5-GHz power amplifier with a 130-nm RFCMOS process. We obtain saturation power of 15 dBm while the power-added efficiency is approximately 28%.
引用
收藏
页码：59 / 64
页数：6
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