Fundamental mode colpitts VCOs at 115 and 165-GHz
作者： Yan Zhao , Bernd Heinemann , Ullrich R. Pfeiffer
DOI: 10.1109/BCTM.2011.6082744
关键词:
摘要: Two fundamental mode voltage controlled oscillators (VCO) at 115 and 165 GHz manufactured in a f T /f max =280/435-GHz SiGe Bipolar technology are presented. A differential Colpitts topology is used both VCO designs, the phase noise optimization discussed. Without on-chip buffer, 115-GHz delivers −6.6-dBm output power with 1.6-GHz tuning range −80 dBc/Hz 100-kHz offset, 165-GHz provides −15 dBm 7.6-GHz −79 500-kHz offset. VCOs consume 30 mW 46 from 3-V 4.6-V supply respectively.
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