A Recursive Trigonometric Technique for Direct Digital Frequency Synthesizer Implementation

被引：0

作者：

Xing, Xing ^{[1
]}

Melek, William ^{[1
]}

Wang, Wilson ^{[2
]}

机构：

[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada

[2] Lakehead Univ, Dept Mech & Mechatron Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

ELECTRONICS | 2024年 / 13卷 / 23期

基金：

加拿大自然科学与工程研究理事会;

关键词：

FPGA; direct digital frequency synthesis; trigonometric functions; CORDIC; LUT; digital signal processing;

D O I：

10.3390/electronics13234762

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a novel recursive trigonometry (RT) technique for direct digital frequency synthesizer (DDFS) implementations. Traditional DDFS systems on field programmable gate arrays (FPGAs) either require a substantial amount of read-only memory (ROM) space to store reference values or depend on intricate angle rotation functions to approximate trigonometric values. The proposed RT technique offers a DDFS architecture without using the lookup table (LUT) method, and it can enhance signal accuracy and minimize power consumption. The effectiveness of the proposed RT technique has been implemented in a 13.5 kHz 16-bit DDFS with a minimum of 18.91 mW and was tested on a Lattice FPGA. The effectiveness of the proposed RT technology is assessed by using different FPGA platforms in terms of accuracy, hardware resource efficiency, and power consumption, especially in generating cosine waveforms.

引用

页数：17

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