Title :
A novel active variable gain X-Band amplifier in SiGe technology
Author :
Corbière, Rémi ; Louis, Bruno ; Tartarin, Jean-Guy
Author_Institution :
Thales Syst. Aeroportes, Elancourt, France
Abstract :
In this paper, a new structure based on variable gain amplifiers (VGAs) in SiGe technology with high linearity (Pin1dB > 8 dBm) and high dynamic range (> 30 dB) under 3.3 V is presented. In this proposed technique, two VGAs and a passive attenuator are used to improve the linearity especially at high attenuation. The simulated gain errors are less than +/- 0.1 dB for a 0.5 dB step over the whole dynamic gain range (31.5 dB). The Pin1dB is better than 8 dBm at the maximum gain of 8 dB and better than 22 dBm above 16 dB of attenuation.
Keywords :
Ge-Si alloys; amplifiers; attenuators; SiGe; SiGe technology; active variable gain X-band amplifier; gain error; high dynamic range; high linearity; passive attenuator; voltage 3.3 V; Attenuation; Attenuators; BiCMOS integrated circuits; Dynamic range; Gain; Germanium silicon alloys; Linearity; RF signals; Radio frequency; Silicon germanium; High linearity amplifiers; Monte-Carlo simulations; RF analog circuits; Silicon bipolar/BiCMOS process technology; Variable gain amplifiers (VGAs);
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5515104
