A ROM-less direct digital frequency synthesizer by using trigonometric quadruple angle formula

Author

Wang, Chua-Chin ; She, Hsien-Chih ; Hu, Ron

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

1

fYear

2002

fDate

2002

Firstpage

65

Abstract

A ROM-less direct digital frequency synthesizer (DDFS) employing a trigonometric quadruple angle formula is presented. The spectral purity is better than -130 dBc worst case spur. The resolution is up to 13 bits. Neither any scaling table nor error correction table is required. The maximum error is mathematically analyzed. The word length of each multiplier is carefully selected in the digital implementation such that the error range is limited and the resolution is preserved.

Keywords

circuit simulation; direct digital synthesis; error analysis; error compensation; integrated circuit design; integrated circuit measurement; integrated circuit modelling; 13 bit; DDFS; ROM-less direct digital frequency synthesizers; error analysis; error correction tables; error range limitation; maximum error; multiplier word length; scaling tables; synthesizer resolution; trigonometric quadruple angle formulas; worst case spur spectral purity; CMOS technology; Communication switching; Energy consumption; Error correction; Frequency synthesizers; MATLAB; Phase noise; Radio frequency; Table lookup; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2002. 9th International Conference on

Print_ISBN

0-7803-7596-3

Type

conf

DOI

10.1109/ICECS.2002.1045334

Filename

1045334