Title :
Mixer-free digital quadrature demodulation based on second-order sampling
Author :
Feixue, Wang ; Shaowei, Yong ; Guirong, Guo
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Defense Technol., Hunan, China
fDate :
4/30/1998 12:00:00 AM
Abstract :
A mixer-free, all-digital quadrature demodulation method is proposed. This method performs direct second-order sampling on the bandpass signal, and produces quadrature basebands by passing the samples through phase shifters. Mixers are eliminated. This method has more freedom to select mixer-free sampling frequencies than methods based on first-order sampling
Keywords :
demodulation; signal sampling; bandpass signal; digital quadrature demodulation; mixer-free demodulation; phase shifters; quadrature basebands; second-order sampling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980149
