Patent ID: 6346804
Filing Date: 2002-02-12
Classification: G05F

Abstract:
An impedance conversion circuit comprising:a first current input terminal to which a first signal current is input; a first transistor having a base, collector, and emitter, the emitter being connected to the first current input terminal; a first amplifier circuitry connected between the emitter and the base of the first transistor; a second current input terminal to which a second signal current having a phase opposite to a phase of the first signal current is input; a second transistor having a base, collector, and emitter, the emitter being connected to the second current input terminal; a second amplifier circuitry connected between the emitter and the base of the second transistor; a first capacitive element connected between the base of the first transistor and the emitter of the second transistor; and a second capacitive element connected between the base of the second transistor and the emitter of the first transistor.