Fine tuning of switching frequency for minimal distortion in high frequency PWM systems

Author

Malekzadeh, Foad Arfaei ; Mahmoudi, Reza ; Sarkeshi, Mehdi ; Roermund, Arthur

Author_Institution

Mixed Signal Microelectron. Group (MSM), Eindhoven Univ. of Technol., Eindhoven, Netherlands

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

Abstract

A new method for evaluating and minimizing inband and out of band spurious intermodulation, in a naturally sampled PWM, is introduced and theorized. The proposed fine tuning method is based on solution of a set of linear inequalities, which are a function of RF and switching frequencies. The equations can be solved through linear programming techniques. A prototype voltage mode class-D amplifier has been designed and realized in 65 nm CMOS technology for verification purposes. Measurement results confirm the accuracy of the proposed tuning method for prediction of nonlinear metrics.

Keywords

CMOS analogue integrated circuits; HF amplifiers; linear programming; pulse width modulation; radiofrequency amplifiers; CMOS technology; RF frequencies; fine tuning; high frequency PWM systems; inband spurious intermodulation; linear inequalities; linear programming techniques; naturally sampled PWM; nonlinear metric prediction; out-of-band spurious intermodulation; size 65 nm; switching frequency; voltage mode class-D amplifier; Bandwidth; Frequency modulation; OFDM; Pulse width modulation; Switches; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972558

Filename

5972558