Patent ID: 7218904

Claim:
A method for providing filtering in a current-mode sampling mixer comprising: 1) providing a received radio frequency (RF) current; 2) coupling the RF current to a first load for a first period of time to accumulate a charge on the first load; 3) decoupling the RF current from the first load; 4) coupling the RF current to a second load for a second period of time to accumulate a charge on the second load, wherein the first and second loads are capacitive loads with substantially equal capacitance, wherein each load comprises at least two dynamically switchable capacitors, and the capacitors may have unequal capacitances; 5) reading the accumulated charge on the first load; 6) decoupling the RF current from the second load; 7) reading the accumulated charge on the second load; and 8) repeating 2–8.