Patent ID: 6148184
Filing Date: 2000-11-14
Classification: H04B,H04L

Abstract:
A system for the direct conversion of an RF signal having a carrier modulated by a data signal, said system comprising:input means to receive said RF signal;means to provide a phase modulating signal;a phase modulator to receive said local oscillator signal and said phase modulating signal and to generate therefrom first and second toggle signals having a 90 degree phase difference therebetween;a first mixer to receive said RF signal and said first and second toggle signals and generating therefrom a first base band signal;a second mixer to receive said RF signal and said first and second toggle signals and generating therefrom a second base band signal;a subtractor to receive and subtract said first and second base band signals to generate a third signal; anda third mixer to receive said third signal and said modulating signal and to generate therefrom said data signal.