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2014•IEEE Transactions on Circuits & Systems II Express BriefsRequires access

Fast-Settling Feedforward Automatic Gain Control Based on a New Gain Control Approach

Xin Cheng, Guangjun Xie, Zhang Zhang, Yizhong Yang

Open publisher page 17 citations

Abstract

This brief presents a feedforward automatic gain control (AGC) circuit with a short settling time. The proposed AGC combines a digital coarse gain setting and an analog fine gain setting, in which the fine gain setting is carried out by a one-step algorithm, which shortens the settling time drastically. The chip is fabricated in 0.13-μm CMOS technology and the measurement results show that the 48-dB AGC converges to the desired level within 1.2 μs.

About this research paper

What this paper is about

This brief presents a feedforward automatic gain control (AGC) circuit with a short settling time. The proposed AGC combines a digital coarse gain setting and an analog fine gain setting, in which the fine gain setting is carried out by a one-step algorithm, which shortens the settling time drastically. The chip is fabricated in 0.13-μm CMOS technology and the measurement results show that the 48-dB AGC converges to the desired level within 1.2 μs.

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OpenAlex reports 17 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This brief presents a feedforward automatic gain control (AGC) circuit with a short settling time. The proposed AGC combines a digital coarse gain setting and an analog fine gain setting, in which the fine gain setting is carried out by a one-step algorithm, which shortens the settling time drastically. The chip is fabricated in 0.13-μm CMOS technology and the measurement results show that the 48-dB AGC converges to the desired level within 1.2 μs.

Key concepts: Feed forward, Automatic gain control, Settling time, Settling, High-gain antenna, Open-loop gain, CMOS, Computer science

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