Title :
Modeling and Measurement of Phase Noise in GaAs HBT Ka-Band Oscillators
Author :
Lenk, Friedrich ; Schott, Matthias ; Heinrich, Wolfgang
Author_Institution :
Ferdinand-Braun-Institut fÿr Höchstfrequenztechnik (FBH), Albert-Einstein-Str. 11, D-12489 Berlin / Germany, Tel.: +49-30-6392-2625, Fax: +49-30-6392-2642, email: f.lenk@ieee.org
Abstract :
Accurate oscillator phase-noise simulation is a key problem in MMIC design, which is not solved satisfactory so far and needs further investigation. In this paper, a Ka-band MMIC oscillator with GaInP/GaAs HBT and on-chip resonator is treated as an example. Measured phase noise reaches ¿90 dBc/Hz and below at 100 kHz offset. To evaluate phase-noise prediction, the circuit is simulated using different commercial simulation tools and HBT models. Considerable differences in simulation results are observed.
Keywords :
Circuit noise; Circuit simulation; Gallium arsenide; Heterojunction bipolar transistors; Low-frequency noise; MMICs; Noise measurement; Oscillators; Phase measurement; Phase noise;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.339168
