FPGA Implementation of Low Phase Noise Oscillator

Author

Narkhede, Nitin P. ; Limaye, Shyamkant S.

Author_Institution

Dept. of Electron. & Commun., Ramdeobaba Kamla Nehru Eng. Coll., Nagpur, India

fYear

2009

fDate

28-29 Dec. 2009

Firstpage

244

Lastpage

247

Abstract

Many DSP applications require a complex sinusoid to accomplish various signal rotation tasks. Examples include the discrete, fast Fourier transforms and digital up/down conversions. This article presents a complex oscillator based on the unfolded CORDIC algorithm and produces periodic sine and cosine samples for any specified angle increment. Low phase noise is achieved by residual angle correction unit and stability is achieved using AGC unit. The simulation and synthesis results in FPGA are presented. Fourier analysis of the output using MATLAB is also presented.

Keywords

automatic gain control; digital arithmetic; digital signal processing chips; direct digital synthesis; discrete Fourier transforms; field programmable gate arrays; mathematics computing; oscillators; phase noise; AGC unit; DSP applications; FPGA implementation; Fourier analysis; MATLAB; complex oscillator; digital up-down conversions; discrete Fourier transforms; fast Fourier transforms; low phase noise oscillator; residual angle correction unit; signal rotation tasks; unfolded CORDIC algorithm; Communication system control; Computer architecture; Equations; Field programmable gate arrays; Hardware; Oscillators; Phase noise; Stability; Telecommunication computing; Telecommunication control; CORDIC; DDS; Residual angle; VHDL;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Computing, Control, & Telecommunication Technologies, 2009. ACT '09. International Conference on

Conference_Location

Trivandrum, Kerala

Print_ISBN

978-1-4244-5321-4

Electronic_ISBN

978-0-7695-3915-7

Type

conf

DOI

10.1109/ACT.2009.68

Filename

5376720