Loading…
Small VCO-Gain Variation Adding a Bias-Shifted Inversion-Mode MOS Varactor
This letter proposes a small voltage-controlled oscillator (VCO)-gain variation (AKVCO) technique using the capacitance-slope change of the varactor, which is achieved by adding a bias-shifted inversion-mode MOS varactor in parallel with a conventional accumulation-mode MOS varactor. This technique...
Saved in:
Published in: | IEEE microwave and wireless components letters 2017-04, Vol.27 (4), p.395-397 |
---|---|
Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | This letter proposes a small voltage-controlled oscillator (VCO)-gain variation (AKVCO) technique using the capacitance-slope change of the varactor, which is achieved by adding a bias-shifted inversion-mode MOS varactor in parallel with a conventional accumulation-mode MOS varactor. This technique is investigated via theoretical analysis, which is confirmed by simulation and measurement. The proposed VCO shows a phase noise of -116.4 dBc/Hz at a 1-MHz offset frequency at 2.36 GHz, a figure of merit of -185 dBc/Hz, and a AKVCO of less than 8.6% over a frequency tuning range from 1.73 to 2.36 GHz while consuming 0.76 mW from a 0.8-V supply voltage. It was implemented using a 110-nm CMOS process with a chip area of 0.95 mm 2 . |
---|---|
ISSN: | 1531-1309 2771-957X 1558-1764 2771-9588 |
DOI: | 10.1109/LMWC.2017.2678431 |