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Moretti, M. (author), Janssen, G.J.M. (author)Abstract of NL 1007132 (C1) The null points of the filter transfer function (h(t)) are identical to the null points of the base frequency of the modulation signalpatent 1999
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Moretti, M. (author), Janssen, G.J.M. (author)The transmission modulation system minimizes the wasted 'out of band' power. The digital data (1) to be transmitted is fed via a pulse response filter (2) to a mixer (4) where it modulates a carrier wave (4). The digital data is also fed via a delay circuit (5) and identical filter (6) to a second mixer (7). The delayed signal modulates a...patent 2000