Ata_sa16
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Hi guys,
I have a question about this topology
I understand the first part, so basically it is demodulating mark and space modulated signals by mixing with their carrier frequeny, so at the end it will have
lets we have received mark:
cosw1t x cosw1t =0.5+ 0.5*cos2w1t
now the question is we need LPF in order to filter 0.5*cos2w1t
but why BPF is used ???
Thank your for your time and attention
I have a question about this topology
I understand the first part, so basically it is demodulating mark and space modulated signals by mixing with their carrier frequeny, so at the end it will have
lets we have received mark:
cosw1t x cosw1t =0.5+ 0.5*cos2w1t
now the question is we need LPF in order to filter 0.5*cos2w1t
but why BPF is used ???
Thank your for your time and attention