A wideband variable-gain amplifier with a negative exponential generation in 40-nm CMOS technology

A wideband variable-gain amplifier with a negative exponential generation in 40-nm CMOS technology

A wideband variable-gain amplifier (VGA) with a negative exponential generation using 40 nm CMOS technology is reported. By compensating a single-branch negative exponential generator (NEG) which features a composite of dual Taylor series, the proposed negative exponential generation further extends...

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Bibliographic Details
Main Authors: Dong, Yangtao, Kong, Lingshan, Boon, Chirn Chye, Liu, Zhe, Li, Chenyang, Yang, Kaituo, Zhou, Ao
Other Authors: School of Electrical and Electronic Engineering
Format: Conference or Workshop Item
Language:English
Published: 2020
Subjects:
Engineering
Variable Gain Amplifier
CMOS Technology
Online Access:https://hdl.handle.net/10356/144775
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Institution: Nanyang Technological University
Language: English
Description
Summary:A wideband variable-gain amplifier (VGA) with a negative exponential generation using 40 nm CMOS technology is reported. By compensating a single-branch negative exponential generator (NEG) which features a composite of dual Taylor series, the proposed negative exponential generation further extends the dB-linear range. The measurement results show the overall VGA achieves a dB-linear range of 51 dB (-34 ~ 17dB) with a gain error less than ± 1 dB. In addition, the bandwidth is around 7 GHz under different gain settings. The core circuit draws 24.6 mA current from a 1.1 V power supply (excluding the output buffer) and occupies an active area of 0.038 mm2.

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