Abstract
A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).
Original language | English |
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Article number | 5392992 |
Pages (from-to) | 94-96 |
Number of pages | 3 |
Journal | IEEE Microwave and Wireless Components Letters |
Volume | 20 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2010 Feb |
Keywords
- Phase noise
- Varactor
- Voltage controlled oscillator (VCO)
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering