A TRANSFERRED-SUBSTRATE HBT WIDE-BAND DIFFERENTIAL-AMPLIFIER TO 50 GHZ

Authors
AGARWAL B LEE Q PULLELA R MENSA D GUTHRIE J RODWELL MJW
Citation
B. Agarwal et al., A TRANSFERRED-SUBSTRATE HBT WIDE-BAND DIFFERENTIAL-AMPLIFIER TO 50 GHZ, IEEE microwave and guided wave letters, 8(7), 1998, pp. 263-265
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE microwave and guided wave letters → ACNP
ISSN journal
10518207
Volume
8
Issue
7
Year of publication
1998
Pages
263 - 265
Database
ISI
SICI code
1051-8207(1998)8:7<263:ATHWDT>2.0.ZU;2-P
Abstract
Differential amplifiers are used in automatic gain control amplifiers and limiting amplifiers in fiber-optic receivers. Here we present a di fferential amplifier fabricated in the transferred-substrate heterojun ction bipolar transistor (HBT) integrated circuit technology. The ampl ifier has a gain of 11 dB and the 3-dB bandwidth is greater than 50 GH z. Two gain stages with de interstage coupling are used. Biasing is th rough active current mirrors and a single negative power supply. A ban dwidth of 50 GHz is the highest bandwidth ever reported for a broad-ba nd differential amplifier in any technology.