Patent ID: 6396330
Filing Date: 2002-05-28
Classification: H03D

Abstract:
A mixer circuit comprising:(a) a first input terminal; (b) a second input terminal; (c) a third input terminal; (d) a fourth input terminal; (e) a first transistor having a base electrically connected to said first input terminal; (f) a second transistor having a base electrically connected to said second input terminal; (g) a third transistor having a base electrically connected to said third input terminal; (h) a fourth transistor having a base electrically connected to said third input terminal; (i) a fifth transistor having a base electrically connected to said fourth input terminal; a sixth transistor having a base electrically connected to said fourth input terminal, said first transistor having a collector electrically connected to emitters of said third and fifth transistors, said second transistor having a collector electrically connected to emitters of said fourth and sixth transistors, said third transistor having a collector electrically connected to a collector of said sixth transistor, said fourth transistor having a collector electrically connected to a collector of said fifth transistor; (k) a first impedance element connected between said first input terminal and said collector of said second transistor; and (l) a second impedance element connected between said second input terminal and said collector of said first transistor.