A low phase noise LC‐VCO for phase‐locked frequency synthesizers. Issue 6 (June 2014)

• Record Type: Journal Article
• Authors: Wang, Haoxuan X.; Zhang, Wei; Liu, Yanyan Y.; Zhang, Liang
• Is Part Of: Microwave and optical technology letters. Volume 56:Issue 6(2014:Jun.)
• Page Start: 1486
• Page End: 1492
• Publication Date: 2014-06
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.28337
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>This article presents a low phase noise voltage‐controlled‐oscillator (VCO) using standard 0.18 um RF CMOS process. This VCO is based on the voltage‐biased technique with a tail‐current inductor. Design considerations toward low phase noise are given and some tradeoffs are also described. Measurements show that the VCO has a phase noise of −49.8 dBc/Hz at 1 kHz offset and −134.8 dBc/Hz at 1 MHz offset from the 1.49 GHz carrier frequency. Compared with some other recently reported current‐biased and voltage‐biased VCOs, this work shows a better phase noise performance with reasonable power consumption. This VCO has been successfully applied in phase‐locked frequency synthesizers. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1486–1492, 2014</p> </abstract>