US 12,474,413 B1
Calibration device for AC/DC systems
Anna Melnichuk, Rio Rancho, NM (US); and Aaron Michael Meyrick, Rio Rancho, NM (US)
Assigned to National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed by National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed on Sep. 20, 2023, as Appl. No. 18/370,532.
Int. Cl. G01R 31/40 (2020.01); H01P 5/18 (2006.01)
CPC G01R 31/40 (2013.01) [H01P 5/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit comprising:
a first reference (ref1) sensor with a ref1 input and a ref1 output;
a first device under test (DUT1) sensor with a DUT1 input and a DUT1 output;
a coupler, wherein the ref1 output and the DUT1 output are connected to a first input and a second input of the coupler respectively and the coupler has a coupler output;
a ref1 heating element adjacent to and electrically isolated from the ref1 sensor;
a DUT1 heating element adjacent to and electrically isolated from the DUT1 sensor;
a ref1 power source connected to the ref1 heating element; and
a DUT1 power source connected to the DUT1 heating element.