Patent · US Active

Dual input single output power multiplexer for near field communication application

US9236912B2 · kind B2 · utility

1Cited by

16References

20Claims

0Family size

Assignee

FAIRCHILD SEMICONDUCTOR CORPORATION · US

Inventors

Ni Sun · Sunnyvale, US
Jeongil Lee · Seoul, KR
Sam Zheng · Shanghai, CN

Key dates

Filing date	Nov 23, 2012
Grant date	Jan 12, 2016
Priority date	—
Expiry date	Mar 8, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04B5/79
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Generally, this disclosure provides systems, methods and platforms for power multiplexer switching operations. The system may include a near field communication (NFC) module configured to receive power through a radio frequency (RF) channel; a subscriber identity module (SIM) circuit configured with a supply voltage port; and a power multiplexer circuit configured to controllably couple the SIM circuit supply voltage port to the NFC module, wherein the NFC module provides a supply voltage to the SIM circuit such that the SIM circuit is operable in the absence of primary device power source.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.