A 40-GHz 4-Bit Digitally Controlled VGA With Low Phase Variation Using 65-nm CMOS Process

被引：34
|
作者：
Tsai, Jeng-Han [1 ]
Lin, Chia-Lung [1 ]
机构：
[1] Natl Taiwan Normal Univ, Dept Elect Engn, Taipei 10610, Taiwan
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2019年 / 29卷 / 11期
关键词：
Gain; Topology; Market research; Transistors; Logic gates; Voltage control; Gain control; Current steering; digital control; low phase variation; millimeter-wave (MMW); variable gain amplifier (VGA); BAND;
D O I：
10.1109/LMWC.2019.2942013
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：
A 40-GHz variable gain amplifier (VGA) with 4-bit digital gain control and low phase variation is designed and fabricated on the 65-nm CMOS process. The digital gain control mechanism is achieved using the presented digital version current steering topology. The measured gain of the VGA is between 22 and 6 dB at 40 GHz with 16 different linear-in-decibel gain states. Using the proposed two-stage digital version current steering VGA phase compensation technique, the measured phase variation is 3.18 within a 16-dB gain control range (GCR) and the root mean square (rms) phase error is 0.89 at 40 GHz.
引用
收藏
页码：729 / 732
页数：4
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