Title :
Bandpass filtering using quadrature modulation
Author_Institution :
Dept. of Electr. & Commun. Eng., PNG Univ. of Technol., Lae, Papua New Guinea
fDate :
12/1/1999 12:00:00 AM
Abstract :
Existing quadrature-modulation systems for bandpass filtering do not make the bandpass filter response have a strictly linear-phase characteristic, even when the equivalent low-pass filter used in the system has a strictly linear-phase response. Simple modifications are proposed to make the bandpass response have a strictly linear-phase characteristic. The modified technique is then extended to obtain an output signal with additional phase shift of 90°
Keywords :
band-pass filters; digital filters; linear phase filters; bandpass filtering; digital filters; equivalent low-pass filter; filter response; output signal; phase shift; quadrature modulation; strictly linear-phase characteristic; Band pass filters; Bandwidth; Demodulation; Digital filters; Digital signal processing; Filtering; Finite impulse response filter; Frequency response; Low pass filters; Passband;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
