COPLANAR WAVE-GUIDE 2-STAGE BALANCED MMIC AMPLIFIER USING IMPEDANCE-TRANSFORMING LUMPED-DISTRIBUTED BRANCHLINE COUPLERS

Authors
GILLICK M ROBERTSON ID JOSHI JS
Citation
M. Gillick et al., COPLANAR WAVE-GUIDE 2-STAGE BALANCED MMIC AMPLIFIER USING IMPEDANCE-TRANSFORMING LUMPED-DISTRIBUTED BRANCHLINE COUPLERS, IEE proceedings. Microwaves, antennas and propagation, 141(4), 1994, pp. 241-245
Citations number
14
Categorie Soggetti
Optics
Journal title
IEE proceedings. Microwaves, antennas and propagation → ACNP
ISSN journal
13502417
Volume
141
Issue
4
Year of publication
1994
Pages
241 - 245
Database
ISI
SICI code
1350-2417(1994)141:4<241:CW2BMA>2.0.ZU;2-Z
Abstract
A design technique is presented for coplanar waveguide monolithic bala nced amplifiers employing impedance-transforming lumped-distributed br anchline couplers. A synthesis procedure and design graphs are present ed for this type of coupler, which uses a combination of short transmi ssion-line sections and lumped capacitors. A two-stage balanced Ku-ban d MESFET amplifier using 50-to-15 OMEGA transforming couplers has been designed, with a chip size of only 2 mm x 1.7 mm, and the measured ga in is 13.7 +/- 0.2 dB over the range 14-16 GHz.