Cascode, cascode circuit and method for vertical integration of two bipolar transistors to a cascade arrangement

摘要

Cascode a high-frequency circuit,witha first transistor with- a first base semiconductor region,- a first collector semiconductor region and- a first emitter semiconductor regionand a second transistor with- a second base semiconductor region,- a second collector semiconductor region and- a second emitter semiconductor region,characterized in that the first emitter semiconductor region of the first transistor and the second collector semiconductor region of the second transistor with respect to a wafer surface lie on top and the first collector semiconductor region of the first transistor and the second emitter semiconductor region of the second transistor are geometrically below with respect to the wafer surface.