Title :
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
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;
Conference_Titel :
Electronics, Circuits and Systems, 2002. 9th International Conference on
Print_ISBN :
0-7803-7596-3
DOI :
10.1109/ICECS.2002.1045334
