A 27-43 GHz CMOS Body-Biased Digital Current-Steering VGA With 4 Bit and Low Phase Shift

被引：12

作者：

Tsai, Jeng-Han ^{[1
]}

Chen, Yi-Ting ^{[1
]}

机构：

[1] Natl Taiwan Normal Univ, Dept Elect Engn, Taipei 10610, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2023年 / 33卷 / 02期

关键词：

Broadband; low phase shift; millimeter-wave (mm-Wave); phased-array; variable gain amplifier (VGA); VARIABLE GAIN LNA; BAND;

D O I：

10.1109/LMWC.2022.3208631

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：

This letter presents a broadband digital-controlled variable gain amplifier (VGA) on 65-nm CMOS process. A body-biased digital current-steering topology is proposed to enlarge the gain control range (GCR) of the VGA under low supply voltage. For phased-array applications, a phase compensation network is added to minimize the phase shift during the gain tuning. The proposed VGA achieves a small-signal gain of 16.3/16.1 dB at 28/38 GHz with a 3-dB gain bandwidth from 25.5 to 46 GHz. The measured phase variation is 2.32 degrees/4.8 degrees with a GCR of 8.7/8.4 dB at 28/38 GHz. The phase variation of the VGA is less than 5 degrees and the rms phase error is less than 1.46 degrees over a wide frequency band of 27-43 GHz covering multiple 5G bands.

引用

页码：196 / 199

页数：4

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