A NOVEL MONOLITHIC LNA INTEGRATING A COMMON-SOURCE HEMT WITH AN HBT DARLINGTON AMPLIFIER

Citation
Kw. Kobayashi et al., A NOVEL MONOLITHIC LNA INTEGRATING A COMMON-SOURCE HEMT WITH AN HBT DARLINGTON AMPLIFIER, IEEE microwave and guided wave letters, 5(12), 1995, pp. 442-444
Citations number
NO
Categorie Soggetti
Engineering, Eletrical & Electronic
ISSN journal
10518207
Volume
5
Issue
12
Year of publication
1995
Pages
442 - 444
Database
ISI
SICI code
1051-8207(1995)5:12<442:ANMLIA>2.0.ZU;2-F
Abstract
Here we report on the results of a novel HEMT-HBT LNA MMIC fabricated using selective molecular beam epitaxy (MBE) techniques. This unique c ircuit monolithically integrates a low-noise common-source HEMT with a n HBT Darlington feedback amplifier to achieve high gain, low noise fi gure, and nide bandwidth utilizing a compact direct-coupled topology, The miniature direct-coupled MMIC is 0.9 x 0.7 mm(2) in size and obtai ns 1-8 GHz bandwidth, greater than 17.5 dB gain, and a minimum noise f igure of 2.5 dB, The maximum IP3 is 18 dBm with a saturated output pow er (P-sat) > 12 dBm, The HEMT-HBT amplifier achieves comparable P-sat performance to the conventional HBT only Darlington amplifier while ac hieving over 2-dB reduction-in noise figure across the band, This work benchmarks the first HEMT-HBT MMIC that illustrates microwave perform ance advantages when compared to an HBT-only design.