A voltage-controlled oscillator based on negative inductance converter

Author

Ulansky, V.V. ; Elsherif, H.M.

Author_Institution

Dept. of Electron., Nat. Aviation Univ., Kiev, Ukraine

fYear

2015

fDate

21-24 April 2015

Firstpage

508

Lastpage

511

Abstract

This paper describes a novel operational amplifier (OPA) voltage controlled oscillator (VCO) circuit which can be used in frequency range exceeding unity gain bandwidth. The VCO topology is based on the operational-amplifier-negative- inductance converter. The oscillator architecture, mathematical modeling, simulation and measurement results are presented. The designed VCO uses an ultra low noise wideband OPA LMH6624, covers frequency band between 786.3 MHz and 1.0 GHz and exhibits a maximum in-band phase noise of - 141.3 dBc/Hz at 1 MHz offset from carrier frequency. Power consumption of the VCO core is 57 mW from a ± 2.5 V power supply. The simulation results are verified by implementing the oscillator that generates a low-noise signal.

Keywords

operational amplifiers; power convertors; voltage-controlled oscillators; OPA VCO circuit; frequency 1 MHz; frequency 786.3 MHz to 1.0 GHz; low-noise signal; operational amplifier voltage controlled oscillator circuit; operational-amplifier-negative-inductance converter; power 57 mW; power consumption; ultra low noise wideband OPA LMH6624; Harmonic analysis; Inductance; Phase noise; Topology; Tuning; Voltage-controlled oscillators; distortion; operational amplifier; phase-noise; slew rate; varactor; voltage-controlled oscillator;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Nanotechnology (ELNANO), 2015 IEEE 35th International Conference on

Conference_Location

Kiev

Type

conf

DOI

10.1109/ELNANO.2015.7146939

Filename

7146939