A low-phase-noise K-band CMOS VCO
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
16
Journal Issue
10
Pages
552-554
Date Issued
2006
Author(s)
Hsieh, H.-H.
Abstract
A novel circuit topology for low-phase-noise voltage controlled oscillators (VCOs) is presented in this letter. By employing a PMOS cross-coupled pair with a capacitive feedback, superior circuit performance can be achieved especially at higher frequencies. Based on the proposed architecture, a prototype VCO implemented in a 0.18-μm CMOS process is demonstrated for K-band applications. From the measurement results, the VCO exhibits a 510-MHz frequency tuning range at 20GHz. The output power and the phase noise at 1-MHz offset are -3dBm and -111dBc/Hz, respectively. The fabricated circuit consumes a dc power of 32mW from a 1.8-V supply voltage.
SDGs
Type
journal article