A 21 GHz Complementary Transformer Coupled CMOS VCO
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
18
Journal Issue
4
Pages
278--280
Date Issued
2008-04
Author(s)
Abstract
A new topology for low power voltage controlled oscillators (VCOs) using a 0.18- CMOS foundry process is presented in this letter. From the measured results, the VCO exhibits a tuning range of 3% at 21.3 GHz. Using complementary topology, the core power consumption and the output power are 9.6 mW and 3 dBm, respectively. With the broadside coupled transformer, the VCO achieves a good phase noise of 106 dBc/Hz at 1 MHz offset and a compact chip size of 350470 . It is the first time that the broadside coupled transformer approach is applied to transformer coupled CMOS VCOs.
SDGs
Type
journal article