Patent ID: 7013120
Filing Date: 2006-03-14
Classification: H03D

Abstract:
1. A method of downconverting a signal and rejecting an image, comprising: providing a first, second, third, fourth and fifth signal, wherein the first signal has a frequency F, the second signal has a frequency F/N, wherein N is an integer greater than 1, the third signal has a frequency F/N, wherein N is an integer greater than 1, and is phase shifted 90° with respect the second signal; the fourth signal has a frequency F/NM, wherein N and M are integers greater than 1, and the fifth signal has a frequency F/NM, wherein N and M are integers greater than 1, and is phase shifted 90.degree. from the fourth signal; mixing the first signal with an input signal to produce a first mixer output signal; splitting the first mixer output signal to produce a first splitter output signal and a second splitter output signal; mixing the first splitter output signal with the second signal to produce a second mixer output signal; mixing the second splitter output signal with the third signal to produce a third mixer output signal; mixing the second mixer output signal with the fourth signal to produce a fourth mixer output signal; mixing the third mixer output signal with the fifth signal to produce a fifth mixer output signal; and combining the fourth mixer output signal and the fifth mixer output signal to produce a combiner output signal.