Patent ID: 11953535
Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. An active noise source apparatus, comprising:
a first switched-biased noise amplifier branch,
a second switched-biased noise amplifier branch, and
a directional coupler having a pair of input ports connected to combine noise outputs from the first and second switched-biased noise amplifiers, one output port of the directional coupler being connected to a matched termination and another output port of the directional coupler being connected to an output of the active noise source apparatus, and wherein the output of the active noise source apparatus comprises a ground-signal-ground, GSG, contact pad, and a shunt transmission line is connected parallel with a capacitance of the GSG contact pad.