CMOS circular geometry VCOs for microwave magnetic field generation

Author

Yalcin, Tolga ; Sahin, Volkan ; Boero, Giovanni ; Popovic, Radivoje S.

Author_Institution

IMM-LMIS3, Ecole Polytech. Fed. de Lausanne, Switzerland

fYear

2005

Firstpage

687

Lastpage

690

Abstract

We present 6 and 8 GHz CMOS VCOs capable of equi-phase microwave magnetic field generation for magnetic sensor applications. The VCOs are implemented in a balance-scale shaped circular-geometry structure, and prototyped using a standard 0.35 μm CMOS technology. Both VCOs can generate magnetic fields of up to 1 mT within an on-chip 300 μm diameter coil. Simulated phase noise is better than -120 dBc at 1 MHz. Measured frequency tuning ranges are 1.1 and 0.6 GHz for the 6 and 8 GHz VCOs, respectively.

Keywords

CMOS analogue integrated circuits; coils; integrated circuit design; magnetic fields; magnetic sensors; microwave integrated circuits; microwave oscillators; phase noise; voltage-controlled oscillators; 0.35 micron; 1 mT; 300 micron; 6 GHz; 8 GHz; CMOS circular geometry VCO; frequency tuning range; magnetic sensor; microwave magnetic field generation; on-chip coil; phase noise; CMOS technology; Coils; Frequency measurement; Geometry; Magnetic field measurement; Magnetic sensors; Microwave generation; Microwave magnetics; Phase noise; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE

ISSN

1529-2517

Print_ISBN

0-7803-8983-2

Type

conf

DOI

10.1109/RFIC.2005.1489907

Filename

1489907