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1. (WO2018034991) TWO-STEP SELF-TEST CIRCUIT FOR MICROCONTROLLER UNIT AND ANTENNA

Pub. No.:    WO/2018/034991    International Application No.:    PCT/US2017/046591
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Sat Aug 12 01:59:59 CEST 2017
IPC: G01R 35/00
G01R 19/155
G01R 29/10
Applicants: SOUTHWIRE COMPANY, LLC
Inventors: DUKE, Richard, Allan
PAYNE, John, Lawrence
Title: TWO-STEP SELF-TEST CIRCUIT FOR MICROCONTROLLER UNIT AND ANTENNA
Abstract:
A system (100) is disclosed. The system (100) includes an antenna (150) and a processor (105). The processor (105) has at least four ports: a first input port coupled to a first portion of the continuity component; a first output port coupled in series to a first resistor (160) coupled to the first potion of the antenna (150) and to ground via a second resistor (170); a second output port coupled through a third resistor (180) to the first portion of the antenna (150); and a second input port coupled to a second portion of the antenna (150) and through a fourth resistor (190) to ground. The processor (105) is operable to activate and deactivate the appropriate ports to put the processor (105) in one of three operating modes: an AC detection mode, an AC self-test mode, and a continuity test mode.