A Quadrature Generator Based on CMOS Triangular-to-Sine/Cosine Converter with 1/4 Frequency Output

Author

Pengwon, Kanitpong ; Leelarasmee, Ekachai

Author_Institution

Eng. Dept., Chulalongkorn Univ., Bangkok

fYear

2008

Firstpage

319

Lastpage

322

Abstract

A major challenge in IC design applications is simplifying structure of a sinusoidal generator without serious performance degradation. This paper presents a triangular-to- sine/cosine converter (TSCC) implemented from simple CMOS circuits that can generate sine/cosine waveforms simultaneously from a triangular input. Its principle of operation is based on generating two functions that approximate sine/cosine in a 45 degree span and sequentially combining them to form a full wave with one-fourth the frequency of the triangular input. The circuits of TSCC are modeled using 0.18 micron CMOS technology for HSPICE simulation. As a result, the output signals with a total harmonic content of 0.220 percent at 1 kHz are achieved.

Keywords

CMOS integrated circuits; convertors; integrated circuit design; waveform generators; CMOS circuit; HSPICE simulation; IC design; quadrature generator; sinusoidal generator; size 0.18 micron; triangular-to-sine/cosine converter; waveform generation; Application specific integrated circuits; CMOS integrated circuits; CMOS technology; Circuit simulation; Degradation; Differential amplifiers; Frequency conversion; Frequency synthesizers; Oscillators; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1707-0

Electronic_ISBN

978-1-4244-1708-7

Type

conf

DOI

10.1109/ICCSC.2008.74

Filename

4536766