A wideband cmos cascaded variable gain amplifier using unequally distributed gain control for DVB-S.2 receiver

Hyeonseok Hwang, Hoonki Kim, Chan Hui Jeong, Chan Keun Kwon, Sanggeun Jeon, Soo-Won Kim, Yoosam Na, Hyunhwan Yoo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A fully integrated three stage cascaded radio frequency variable gain amplifier (RFVGA) linearly controlled by exponential current generation circuit is presented. The gain control is unequally distributed in each stage for noise figure (NF) and linearity performance. The dB-linear gain control is realized using pseudo exponential current generated by CMOS current summing circuit with a voltage to current converter. The RFVGA has over 50 dB dynamic range. Gain changes from-38.5 to 16.8 dB according to control voltage that varies from 0.5 to 1.8 V. It operates at 0.95-2.15 GHz. This design is implemented in 0.18 μm CMOS technology.

Original languageEnglish
Article number1340008
JournalJournal of Circuits, Systems and Computers
Volume22
Issue number9
DOIs
Publication statusPublished - 2013 Oct 1

Fingerprint

Radio frequency amplifiers
Gain control
Summing circuits
Noise figure
Voltage control
Networks (circuits)
Electric potential
Variable gain amplifiers

Keywords

  • CMOS
  • dB-linear
  • DVB-S.2
  • gain control
  • triple-well
  • variable gain amplifier (VGA)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture

Cite this

A wideband cmos cascaded variable gain amplifier using unequally distributed gain control for DVB-S.2 receiver. / Hwang, Hyeonseok; Kim, Hoonki; Jeong, Chan Hui; Kwon, Chan Keun; Jeon, Sanggeun; Kim, Soo-Won; Na, Yoosam; Yoo, Hyunhwan.

In: Journal of Circuits, Systems and Computers, Vol. 22, No. 9, 1340008, 01.10.2013.

Research output: Contribution to journalArticle

Hwang, Hyeonseok ; Kim, Hoonki ; Jeong, Chan Hui ; Kwon, Chan Keun ; Jeon, Sanggeun ; Kim, Soo-Won ; Na, Yoosam ; Yoo, Hyunhwan. / A wideband cmos cascaded variable gain amplifier using unequally distributed gain control for DVB-S.2 receiver. In: Journal of Circuits, Systems and Computers. 2013 ; Vol. 22, No. 9.
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