A Wideband CMOS Variable Gain Amplifier With an Exponential Gain Control

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 1825
  • Download : 6829
DC FieldValueLanguage
dc.contributor.authorLee, Hui Dong-
dc.contributor.authorLee, Kyung Ai-
dc.contributor.authorHong, Songcheol-
dc.identifier.citationIEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 55, NO. 6, pp.1363-1373en
dc.description.abstractA CMOS wideband cascaded variable gain amplifier (VGA) with a temperature-independent exponential gain control characteristic is presented in this paper. The exponential gain control function is realized using parasitic bipolar transistors and a control signal converter. The bandwidth is extended using an inductive peaking technique for high-frequency operations. The gain of the VGA varies from 38.8 to 55.3 dB in relation to the control voltage that varies from 0 to 1.8 V. The bandwidth of the proposed VGA is approximately 900 MHz with a gain control range of 94.1 dB. The proposed VGA includes a dc offset cancellation loop to avoid amplification of the dc offset. TheVGAis powered by 1.8 V with 11.4 mA. The VGA chip including bondpads occupies an area of 850 m 490 m.en
dc.description.sponsorshipThe authors would like to thank to Dr. C.-H. Kim, Teltron Inc., Daejeon, Korea, for his useful discussions.en
dc.subjectCMOS analog integrated circuiten
dc.subjectgain controlen
dc.subjectlinear-in-decibel gain characteristicen
dc.subjecttemperature compensationen
dc.subjectvariable gain amplifier (VGA)en
dc.subjectwideband systemsen
dc.titleA Wideband CMOS Variable Gain Amplifier With an Exponential Gain Controlen


  • mendeley


rss_1.0 rss_2.0 atom_1.0