FPGA Implementation of Low Phase Noise Oscillator

FPGA Implementation of Low Phase Noise Oscillator

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 cosin...

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Bibliographic Details
Published in:2009 International Conference on Advances in Computing, Control, and Telecommunication Technologies pp. 244 - 247
Main Authors: Narkhede, N.P., Limaye, S.S.
Format: Conference Proceeding
Language:English
Published: IEEE 01-12-2009
Subjects:
Communication system control
Computer architecture
CORDIC
DDS
Equations
Field programmable gate arrays
Hardware
Oscillators
Phase noise
Residual angle
Stability
Telecommunication computing
Telecommunication control
VHDL
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Summary: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.
ISBN:1424453216
9781424453214
DOI:10.1109/ACT.2009.68