Patent ID: 9325556
Filing Date: 2016-04-26
CPC Classification: H03D,H04L

Claim Text:
1. A method for down-converting an input modulated carrier signal to a demodulated baseband signal, wherein the modulated carrier signal has an amplitude variation, a phase variation, a frequency variation, or a combination thereof, the method comprising: outputting from a pulse generator pulses to a switch at a rate that is a function of a frequency of the modulated carrier signal and a frequency of the demodulated baseband signal determined according to: (the frequency of the modulated carrier signal +/− a frequency of the demodulated baseband signal) divided by N, where N is any integer including 1; wherein said pulses have apertures and said pulses cause said switch to open outside of said apertures and cause said switch to close and sample the modulated carrier signal during said apertures by transferring energy from the modulated carrier signal and accumulating said transferred energy in a capacitor each time said switch is closed; discharging some of the previously accumulated energy from said capacitor into load circuitry each time said switch is open; and wherein the demodulated baseband signal is generated from the (i) the accumulating of the energy transferred to the capacitor each time the switch is closed and (ii) the discharging of said some of the previously accumulated energy into the load circuitry each time the switch is opened.