Patent ID: 7496342

Claim:
An apparatus for down-converting an electromagnetic signal, comprising: a first and second capacitor each having a first and second port; a first and second switching device each having a first, second, and third port; and a first and second impedance device each having a first and second port, wherein the second port of the first capacitor is electrically coupled to the second port of the first switching device and the second port of the first impedance device, the second port of the second capacitor is electrically coupled to the second port of the second switching device and the second port of the second impedance device, and the first port of the first switching device is electrically coupled to the first port of the second switching device and the first port of the first and second impedance devices, and wherein a first switching signal is applied to the third port of the first switching device, and a second switching signal is applied to the third port of the second switching device.