Patent ID: 6801585
Filing Date: 2004-10-05
Classification: H03D

Abstract:
A wireless receiver apparatus comprising:a voltage controller oscillator for generating a first signal having a first frequency, and a second signal having the first frequency and in quadrature with the first signal; and a mixer having a first input port for receiving the first signal, and a second input port for receiving the second signal, a third input port for receiving a third signal centered about a third frequency, wherein the mixer generates a fourth signal having a frequency centered about the third frequency less device the first frequency and comprises an exclusive-OR gate, the exclusive-OR gate comprising: a first n-channel device coupled between a first output node and a fourth node; a second n-channel device coupled between the fourth node and a third node; a third n-channel device coupled between the first output node and a fifth node; a fourth n-channel device coupled between the fifth node and the third node; a fifth n-channel device coupled between a second output node and a sixth node; a sixth n-channel device coupled between the sixth node and the third node; a seventh n-channel device coupled between the second output node and a seventh node; and a eighth n-channel device coupled between the seventh node and the third node.