Title :
ARCTAN Differentiated digital demodulator for FM/FSK digital receivers
Author :
Eissa, Haitham M. ; Sharaf, Khaled ; Ragaie, Hani
Author_Institution :
Mentor Graphics, Cairo, Egypt
Abstract :
In this paper a new FM/FSK digital demodulator based on the digital ARCTAN algorithm, is proposed. The proposed digital FM/FSK demodulator is called ARCTAN Differentiated demodulator. The demodulator is based on quadrature ARCTAN algorithm. Direct division of quadrature signals rejects amplitude modulation components. The proposed demodulator works for both narrow & wide band FM/FSK signals & it is suitable for integration in digital-IF receivers. Behavioral simulation analysis is shown for system validation.
Keywords :
demodulators; digital radio; frequency modulation; frequency shift keying; radio receivers; ARCTAN Differentiated demodulator; FM/FSK digital demodulator; behavioral simulation analysis; digital-IF receiver; quadrature ARCTAN algorithm; Amplitude modulation; Communication standards; Demodulation; Digital signal processing; Frequency modulation; Frequency shift keying; Low pass filters; Phase locked loops; Signal processing algorithms; Wideband;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1186832
