Title :
An arctangent type wideband PM/FM demodulator with improved performance
Author_Institution :
Dept. de Genie Electr., Sherbrooke Univ., Que., Canada
fDate :
2/1/1992 12:00:00 AM
Abstract :
Hagiwara and Nakagawa (1985, 1986) added a jump detector at the output of an arctangent-type baseband FM demodulator in order to transform this intrinsic narrowband demodulator into a wideband one. It is shown in the present work that the performance of the Hagiwara and Nakagawa wideband FM demodulator can be improved, at low input signal-to-noise ratio, by placing the jump detector before, rather than after, the differentiator. An alternative jump detector is also presented
Keywords :
demodulation; demodulators; frequency modulation; phase modulation; arctangent baseband FM demodulator; differentiator; jump detector; performance; phase modulation; wideband PM/FM demodulator; Amplitude modulation; Baseband; Circuits; Demodulation; Detectors; Frequency modulation; Narrowband; Phase modulation; Quadrature amplitude modulation; Wideband;
Journal_Title :
Consumer Electronics, IEEE Transactions on
