Patent ID: 6529051
Filing Date: 2003-03-04
Classification: H03B

Abstract:
A frequency multiplier comprising:an input transmission line, receiving an incoming microwave signal; an output transmission line; a first transistor, having a first control input and a first current path, said first control input being coupled to said input transmission line, a first end of said first current path being connected to ground; a second transistor, having a second control input and a second current path, said second control input being connected to ground, a first end of said second current path being coupled to said input transmission line; a first damping resistance, connected between a second end of said first current path and said output transmission line; and a second damping resistance, connected between a second end of said second current path and said output transmission line, wherein a value of said second damping resistance is determined so that said second damping resistance negates to form a pseudo-oscillating circuit comprising said second transistor and said output transmission line, and a value of said first damping resistance is determined so that a gain of a loop including said first and second transistors is less than 1 to suppress a loop oscillation.