Title :
Comprehensive study of multiband unconditional stabilization of common-source and common-gate MESFET transistors using feedback
Author :
Hammad, Hany F. ; Freundorfer, Alois P. ; Antar, Yahia M M
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
fDate :
10/1/2002 12:00:00 AM
Abstract :
The use of a new feedback scheme to achieve unconditionally stable MESFET transistors from 0 GHz until cutoff is presented. The methodology is applied for both common-source and common-gate MESFET transistor configurations. Analytical formulation of the stabilization methodology is presented. In addition, two coplanar-waveguide-based amplifiers were designed to operate at Ka-band, monolithically fabricated, and tested, thus, verifying the methodology. The study includes the effects of the bias change on the feedback amplifier stability performance.
Keywords :
MESFET integrated circuits; MMIC amplifiers; circuit feedback; circuit stability; coplanar waveguides; feedback amplifiers; field effect MIMIC; field effect MMIC; integrated circuit design; millimetre wave amplifiers; network analysis; 0 to 40 GHz; CPW-based amplifiers; Ka-band operation; MESFET MMICs; bias change; common-gate MESFET configurations; common-source MESFET configurations; coplanar-waveguide-based amplifiers; feedback amplifier stability performance; feedback scheme; multiband unconditional stabilization; stabilization methodology; transistor configurations; Character generation; Coplanar waveguides; Cutoff frequency; Feedback amplifiers; Impedance; Loaded antennas; MESFETs; MMICs; Stability; Testing;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2002.803016
