Patent ID: 11888467
Assignee: RAYTHEON COMPANY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method comprising:
receiving a biasing reference voltage at a voltage input terminal of a reference buffer in a current-based temperature compensation circuit;
replicating the biasing reference voltage to first and second buffer terminals, at least one of the first and second buffer terminals electrically connected to at least one gate terminal of an analog complementary metal oxide semiconductor (CMOS) physically unclonable function (PUF) cell;
receiving a reference current at a current input terminal of a biasing current mirror in the current-based temperature compensation circuit;
replicating the reference current to the first buffer terminal; and
using a controller in the current-based temperature compensation circuit, compensating an output of the CMOS PUF cell for temperature variation based on a weighted sum of a bandgap current, a current proportional to absolute temperature, and a current complementary to absolute temperature.