Design of a 0.5-30 GHz Darlington amplifier for microwave broadband applications

Shou Hsien Weng, Hong Yeh Chang, Chau Ching Chiong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Design of a 0.5-30 GHz Darlington amplifier using a 2 11m InGaP/GaAs HBT process for microwave broadband applications is presented in this paper. A device size ratio of the Darlington pair and a series inductor in the input are investigated to enhance the bandwidth of the Darlington pair. The proposed method is applied to the circuit design, and the bandwidth of Darlington amplifier is higher than one-thirds maximum oscillation frequency (f max) of the device. The Darlington amplifier features a 3-dB bandwidth of from 0.5 to 29.7 GHz with an average small signal gain of 10.5 dB. This work demonstrates the highest figure of merit (FOM) among all the HBT Darlington amplifiers so far.

Original languageEnglish
Title of host publication2010 IEEE MTT-S International Microwave Symposium, MTT 2010
Pages137-140
Number of pages4
DOIs
StatePublished - 2010
Event2010 IEEE MTT-S International Microwave Symposium, MTT 2010 - Anaheim, CA, United States
Duration: 23 May 201028 May 2010

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2010 IEEE MTT-S International Microwave Symposium, MTT 2010
Country/TerritoryUnited States
CityAnaheim, CA
Period23/05/1028/05/10

Keywords

  • Darlington amplifier
  • HBT

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