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- Title
Low-power three-path inductor class-C VCO without any dynamic bias circuit.
- Authors
Sheng-Lyang Jang; Yan-Cu Lin
- Abstract
A 2.48 GHz class-C voltage controlled oscillator (VCO) without any dynamic back bias circuit is presented. The VCO uses three-path high Q-factor inductor as the low loss resonator and class-C crosscoupled nMOSFET pairs for high dc/RF conversion efficiency and direct cross-coupled pMOSFET for dc current reuse. At the supply voltage of 1.2 V, the core power consumption is 0.24 mW. The phase noise of the VCO is -124 dBc/Hz and the VCO figure of merit is -197.0 dBc/Hz. The VCO was implemented in the TSMC standard 0.18 μm SiGe BiCMOS process and occupies a die area of 0.799 x 0.809 mm2.
- Subjects
ELECTRIC inductors; CIRCUIT elements; ELECTRIC inductance; QUALITY factor meters; ENERGY consumption
- Publication
Electronics Letters (Wiley-Blackwell), 2017, Vol 53, Issue 17, p1186
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2017.1845