A Wideband Power Amplifier in 65 nm CMOS Covering 25.8 GHz-36.9 GHz by Staggering Tuned MCRs

被引：5
|
作者：
Wang, Zhiqiang [1 ,2 ,3 ]
Wang, Xiaosong [1 ,2 ,3 ]
Liu, Yu [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Res & Dev Ctr Healthcare Elect, Inst Microelect, Beijing 100029, Peoples R China
[2] Chinese Acad Sci, Beijing Key Lab RF Technol Next Generat Commun, Inst Microelect, Beijing 100029, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ELECTRONICS | 2023年 / 12卷 / 17期
基金：
中国国家自然科学基金;
关键词：
broadband power amplifier; symmetrical magnetically coupled resonator (MCR); stagger tuning; current-combining; OUTPUT POWER; DESIGN; GAIN; PAE;
D O I：
10.3390/electronics12173566
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Broadband millimeter-wave power amplifiers have attracted much attention and have wide applications for 5G communication, satellite communication, radar, sensing, etc. Yet, it is challenging to design a power amplifier with broadband small-signal gain and power performance simultaneously. In this study, a transformer-based symmetrical magnetically coupled resonator (MCR) matching network for broadband output matching and stagger-tuned MCRs are used to achieve both broadband small- and large-signal performance. Also, to enhance the gain for the power amplifier, a three-stage common-source pseudo-differential structure is adopted to mitigate the low-gain issue due to stagger tuning, and the shunt resistors aimed to decrease the Q factor of the MCRs. We used the in-phase two-way current combined with microstrip transmission lines to increase the output power. Designed in 65 nm bulky CMOS technology, the power amplifier presents a 3 dB small-signal gain bandwidth from 25.8 GHz to 36.9 GHz, indicating a peak gain of 25.87 dB at 30.5 GHz. The power amplifier demonstrates a 17.84 dBm saturated output power (Psat) at 31 GHz and a 24.37% peak power added efficiency (PAEmax) at 28 GHz. The power amplifier achieves a flat Psat of 17.44 & PLUSMN; 0.4 dBm, a PAEmax of 22.59 & PLUSMN; 1.78%, and an OP1dB of 13.78 & PLUSMN; 0.31 dBm from 26 GHz to 36 GHz.
引用
收藏
页数：21
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