A K-band low phase noise transformer coupled Colpitts VCO in 0.18-μm CMOS technology
Journal
Asia-Pacific Microwave Conference Proceedings, APMC
Pages
1626-1629
Start Page
1626
End Page
1629
ISBN (of the container)
978-085825974-4
Date Issued
2011
Author(s)
Abstract
A K-band low phase noise Colpitts VCO was developed in 0.18-μm CMOS technology. The modified Colpitts VCO which uses a transformer to combine the main transistors and current switch transistors is proposed to improve the output voltage swing and the phase noise. The VCO achieves a good phase noise of 115 dBc/Hz at 1 MHz offset, and the chip size is 0.35 mm 2.
Event(s)
Asia-Pacific Microwave Conference, APMC 2011
Subjects
CMOS technology
transformer
Voltage-controlled oscillator
Type
conference paper