A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation
In this paper, a novel design approach for a phase to sinusoid amplitude converter (PSAC) has been investigated. Two segments have been used to approximate the first sine quadrant. A first linear segment is used to fit the region near the zero point, while a second fourth-order parabolic segment is...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/812576 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832556980975173632 |
|---|---|
| author | Qahtan Khalaf Omran Mohammad Tariqul Islam Norbahiah Misran Mohammad Rashed Iqbal Faruque |
| author_facet | Qahtan Khalaf Omran Mohammad Tariqul Islam Norbahiah Misran Mohammad Rashed Iqbal Faruque |
| author_sort | Qahtan Khalaf Omran |
| collection | DOAJ |
| description | In this paper, a novel design approach for a phase to sinusoid amplitude converter (PSAC) has been investigated. Two segments have been used to approximate the first sine quadrant. A first linear segment is used to fit the region near the zero point, while a second fourth-order parabolic segment is used to approximate the rest of the sine curve. The phase sample, where the polynomial changed, was chosen in such a way as to achieve the maximum spurious free dynamic range (SFDR). The invented direct digital frequency synthesizer (DDFS) has been encoded in VHDL and post simulation was carried out. The synthesized architecture exhibits a promising result of 90 dBc SFDR. The targeted structure is expected to show advantages for perceptible reduction of hardware resources and power consumption as well as high clock speeds. |
| format | Article |
| id | doaj-art-ca187df4e8e64919a70acf1be043baed |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-ca187df4e8e64919a70acf1be043baed2025-02-03T05:43:56ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/812576812576A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial ApproximationQahtan Khalaf Omran0Mohammad Tariqul Islam1Norbahiah Misran2Mohammad Rashed Iqbal Faruque3Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, MalaysiaDepartment of Electrical, Electronic and Systems Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, MalaysiaDepartment of Electrical, Electronic and Systems Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, MalaysiaInstitute of Space Science (ANGKASA), Faculty of Engineering & Built Environment Building, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, MalaysiaIn this paper, a novel design approach for a phase to sinusoid amplitude converter (PSAC) has been investigated. Two segments have been used to approximate the first sine quadrant. A first linear segment is used to fit the region near the zero point, while a second fourth-order parabolic segment is used to approximate the rest of the sine curve. The phase sample, where the polynomial changed, was chosen in such a way as to achieve the maximum spurious free dynamic range (SFDR). The invented direct digital frequency synthesizer (DDFS) has been encoded in VHDL and post simulation was carried out. The synthesized architecture exhibits a promising result of 90 dBc SFDR. The targeted structure is expected to show advantages for perceptible reduction of hardware resources and power consumption as well as high clock speeds.http://dx.doi.org/10.1155/2014/812576 |
| spellingShingle | Qahtan Khalaf Omran Mohammad Tariqul Islam Norbahiah Misran Mohammad Rashed Iqbal Faruque A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation The Scientific World Journal |
| title | A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation |
| title_full | A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation |
| title_fullStr | A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation |
| title_full_unstemmed | A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation |
| title_short | A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation |
| title_sort | rom less direct digital frequency synthesizer based on hybrid polynomial approximation |
| url | http://dx.doi.org/10.1155/2014/812576 |
| work_keys_str_mv | AT qahtankhalafomran aromlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT mohammadtariqulislam aromlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT norbahiahmisran aromlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT mohammadrashediqbalfaruque aromlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT qahtankhalafomran romlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT mohammadtariqulislam romlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT norbahiahmisran romlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation AT mohammadrashediqbalfaruque romlessdirectdigitalfrequencysynthesizerbasedonhybridpolynomialapproximation |