Closed-loop stability analysis of microwave amplifiers

Authors
Jugo, J Portilla, J Anakabe, A Suarez, A Collantes, JM
Citation
J. Jugo et al., Closed-loop stability analysis of microwave amplifiers, ELECTR LETT, 37(4), 2001, pp. 226-228
Citations number
5
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
37
Issue
4
Year of publication
2001
Pages
226 - 228
Database
ISI
SICI code
0013-5194(20010215)37:4<226:CSAOMA>2.0.ZU;2-D
Abstract
A stability analysis technique of microwave amplifiers, valid for large- or small-signal regimes. is presented. The technique calculates the system po les and zeroes from a closed-loop frequency response of the circuit lineari sed around its steady state. The method has been applied to an S-band monol ithic amplifier, detecting spurious oscillations for certain specific bias conditions and input power levels, in good agreement with measurements.