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114750

HIGH LINEARITY CMOS VARIABLE GAIN AMPLIFIER FOR UWB APPLICATIONS

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Electrical Engineering, Computer Engineering and Electrical power and machines engineering.

Abstract

A large dynamic-range Variable Gain Amplifier (VGA) suitable for Ultra Wide Band (UWB) applications is presented. The VGA is composed of three programmable variable gain amplifier stages followed by an output buffer. Such wide bandwidth allows our proposed VGA to be used in multi-standard protocols. Power reduction is developed for the variable gain amplifier stages. Thorough analyses of the mid-band gain and noise are presented; and design tradeoffs are carefully handled. The VGA circuit is designed and simulated in 0.13 μm IBM-CMOS process; the overall VGA with buffer consumes 25 mA from a 1.5 V supply. The VGA achieves 54.5 dB dynamic-range (DR), 17.6 dBm IIP3, -42.31 dB THD at peak-to-peak differential output voltage of 1 V, and frequency 400 MHz. Moreover; the proposed circuit reports a good noise performance; the average integrated noise is 121.6 nV/Hz at minimum gain of -0.5 dB.

DOI

10.21608/jesaun.2013.114750

Keywords

Automatic Gain Control (AGC), Variable Gain Amplifier (VGA), Digitally-controlled Variable Gain Amplifier (DVGA), Buffer, CMOS Analog Integrated Circuits, low voltage, Wide Bandwidth

Authors

First Name

I. L.

Last Name

Abdel-Hafez

MiddleName

-

Affiliation

Electronics and Communications Dept., Faculty of Engineering, Zagazig University, Zagazig. Egypt

Email

-

City

-

Orcid

-

First Name

Y. A.

Last Name

Khalaf

MiddleName

-

Affiliation

Electronics and Communications Dept., Faculty of Engineering, Zagazig University, Zagazig. Egypt

Email

-

City

-

Orcid

-

First Name

Fathi A.

Last Name

Farag

MiddleName

-

Affiliation

Electronics and Communications Department, Faculty of Eng.,Zagazig University, Zagazig. Egypt.

Email

ffarag@zu.edu.eg

City

-

Orcid

-

Volume

41

Article Issue

No 2

Related Issue

16841

Issue Date

2013-03-01

Receive Date

2012-11-11

Publish Date

2013-03-01

Page Start

577

Page End

591

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 41_Issue No 2_Pages 577-591.pdf

PDF . 349.0kB

Link

https://jesaun.journals.ekb.eg/article_114750.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=114750

Order

14

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

HIGH LINEARITY CMOS VARIABLE GAIN AMPLIFIER FOR UWB APPLICATIONS

Details

Type

Article

Created At

23 Jan 2023