Title :
A compact network for eliminating parametric oscillations in high power MMIC amplifiers
Author :
Teeter, D. ; Platzker, A. ; Bourque, R.
Author_Institution :
Adv. Device Center, Raytheon Microelectron., Andover, MA, USA
Abstract :
High power pHEMT (and HBT) power amplifiers frequently have oscillations that occur only when the amplifier is driven near compression; under small signal conditions, oscillations are not present. We have developed a compact RC network that effectively eliminates drive dependent subharmonic and spurious oscillations in pHEMT power amplifiers. The circuit is very compact and can be incorporated in existing MMIC power amplifier designs with little or no additional tuning to the circuit.
Keywords :
HEMT integrated circuits; MMIC power amplifiers; RC circuits; circuit oscillations; field effect MMIC; power integrated circuits; MMIC power amplifier design; compact RC network; drive dependent subharmonic oscillations; high power MMIC amplifiers; pHEMT power amplifiers; parametric oscillations elimination; pseudomorphic HEMT; spurious oscillations; Circuits; Diodes; Frequency; Heterojunction bipolar transistors; High power amplifiers; Intelligent networks; MMICs; PHEMTs; Power amplifiers; Varactors;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779547
