Title :
A reduced sample rate bandpass sigma delta modulator
Author :
Steele, Brenton ; O´Shea, Peter
Author_Institution :
RMIT Univ., Melbourne, Vic., Australia
Abstract :
This paper introduces a bandpass sigma-delta converter which incorporates bandpass sampling, and which can therefore be clocked at frequencies well below the centre frequency of the input. The device is very efficient in terms of the hardware required. A concise theory of the device is given, and simulations are presented to confirm the theory
Keywords :
sigma-delta modulation; signal sampling; bandpass sampling; bandpass sigma delta modulator; bandpass sigma-delta converter; centre frequency; fast comparator; feedback delay; latch; oversampling ratio; reduced sample rate; signal to noise ratio; simulations; Australia; Band pass filters; Bandwidth; Clocks; Delta modulation; Delta-sigma modulation; Digital modulation; Frequency; Hardware; Sampling methods;
Conference_Titel :
Signal Processing and Its Applications, 1999. ISSPA '99. Proceedings of the Fifth International Symposium on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-86435-451-8
DOI :
10.1109/ISSPA.1999.815773
