A wideband BiCMOS variable gain amplifier with novel continuous dB-linear gain control and temperature compensation

Zheng, Le; Yu, Xiao; Yeo, Kiat Seng

doi:10.1007/s10470-016-0891-1

Cited by 5 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In such applications, VGAs are always required to have dB-linear characteristics over a large signal range with an acceptable gain error. Compared to digital control approaches, the continuous analog gain control mechanism is preferred for its simplicity and immunity to glitches [2].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Wideband Variable-Gain Amplifier with a Negative Exponential Generation in 40-nm CMOS Technology

Dong

Kong

Boon

et al. 2020

2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…To achieve and extend the dB-linear gain range, various structures [1][2][3][4][5][6][7] are introduced to produce the exponential function. A simple way to generate the exponential relationship is to adopt the bipolar transistors and make use of its intrinsic exponential I-V relationship [3].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Variable-Gain Amplifier with a Negative Exponential Generation in 40-nm CMOS Technology

Dong

Kong

Boon

et al. 2020

2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

View full text Add to dashboard Cite

show abstract

Evolution of and Perspectives on Differential‐Pair‐Based CMOS Variable Gain Amplifiers With Linear‐in‐Decibel Gain Control: A Tutorial

Wang,

Lu,

Tang

et al. 2024

Circuit Theory & Apps

View full text Add to dashboard Cite

A variable gain amplifier (VGA) is an essential building block used in the automatic gain control (AGC) loop to provide a continuous, adjustable gain for the signal strength. To maintain the stability and consistency of the AGC loop, it is necessary to ensure that the gain of the VGA has an accurate dB‐linear characteristic. This tutorial provides a detailed overview of the development of dB‐linear VGAs based on differential pair structures over recent years. We categorize various VGA cells based on differential pair structures, analyze their operating principles, and explain the key features of each topology. Based on observation and extraction of the dB‐linear implementation schemes used by these VGAs, we summarize three basic methods for achieving dB‐linear gain control. We also discuss specific methods for realizing the exponential function, using a true exponential and a mathematical approximation, and present the different types of approximation functions adopted in the works described here. Considerations in regard to the tuning range, gain error, bandwidth, linearity, process‐temperature robustness, and circuit simplicity are also discussed. Finally, we draw comparisons and give perspectives for future dB‐linear VGAs.

show abstract

An Accurate dB-Linear CMOS VGA Based on Double Duplicate Biasing Technique

Xiong

Zheng

2018

IEEE Solid-State Circuits Lett.

View full text Add to dashboard Cite

A wideband BiCMOS variable gain amplifier with novel continuous dB-linear gain control and temperature compensation

Cited by 5 publications

References 12 publications

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

Evolution of and Perspectives on Differential‐Pair‐Based CMOS Variable Gain Amplifiers With Linear‐in‐Decibel Gain Control: A Tutorial

An Accurate dB-Linear CMOS VGA Based on Double Duplicate Biasing Technique

Contact Info

Product

Resources

About