Title :
Methods to improve the performance of quadrature phase-to-amplitude conversion based on Taylor series approximation
Author :
Palomaki, Kalle I. ; Niittylahti, Jarkko
Author_Institution :
Digital & Comput. Syst. Lab., Tampere Univ. of Technol., Finland
Abstract :
This paper presents a Taylor series approximation based method for digital sine and cosine phase-to-amplitude conversion. The performance of the phase-to-amplitude conversion and the spurious free dynamic range (SFDR) of the output signal are improved by applying methods similar to those used in direct digital frequency synthesizers for ROM compression. Finally, simulation results according to the number of approximation terms and the amplitude bit width are presented and compared with other phase-to-amplitude conversion methods
Keywords :
approximation theory; direct digital synthesis; series (mathematics); signal processing; Taylor series approximation based method; amplitude bit width; digital cosine phase-to-amplitude conversion; digital sine phase-to-amplitude conversion; direct digital frequency synthesizer; frequency synthesis; output signal SFDR; quadrature phase-to-amplitude conversion; spurious free dynamic range; Clocks; Dynamic range; Frequency synthesizers; Gold; Integrated circuit synthesis; Integrated circuit technology; Laboratories; Modems; Read only memory; Taylor series;
Conference_Titel :
Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on
Conference_Location :
Lansing, MI
Print_ISBN :
0-7803-6475-9
DOI :
10.1109/MWSCAS.2000.951576
