Title :
Novel view: frequency spectrum and harmonic distortion of FM signal based on DDS
Author :
Feng, Zhou ; Dan, Xu ; Yin-ting, Liu ; Yuan-mao, Shen ; You-gang, Gao
Author_Institution :
Beijing Univ. of Post & Telecommun., Beijing
Abstract :
Direct digital frequency modulated (DDFM) signal, which certainly on the direct digital synthesizers is widely used in EMC test and measurement. This paper analytically expressed the frequency spectrum of DDFM signal. Works of this paper also include: modifies the approximate formula for first order harmonic distortion (FHD) and discovers restrictions.
Keywords :
direct digital synthesis; electromagnetic compatibility; frequency modulation; harmonic distortion; DDS; EMC test; FM signal; digital synthesizers; direct digital frequency modulated signal; first order harmonic distortion; frequency spectrum; Chirp modulation; Digital modulation; Distortion measurement; Electromagnetic compatibility; Frequency measurement; Frequency modulation; Frequency synthesizers; Harmonic distortion; Power harmonic filters; Signal generators; DDS; EMC; FM; Harmonic distortion;
Conference_Titel :
Electromagnetic Compatibility, 2007. EMC 2007. International Symposium on
Conference_Location :
Qingdao
Print_ISBN :
978-1-4244-1371-3
Electronic_ISBN :
978-1-4244-1372-0
DOI :
10.1109/ELMAGC.2007.4413436
