Patent · US Active

Method and system for chopped antenna impedance measurements with an RFID radio

US8135354B2 · kind B2 · utility

9Cited by

8References

24Claims

0Family size

Assignee

Symbol Technologies, LLC · US

Inventors

Mark Duron · Jacksonville, US
Sean Connolly · Brighton, US
Martin Strzelczyk · New Market, US

Key dates

Filing date	Jun 2, 2009
Grant date	Mar 13, 2012
Priority date	—
Expiry date	Jul 9, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/2822
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Described herein are methods, devices and systems for characterizing an attached antenna to an electronic device, such as a radio frequency identification (“RFID”) reader. One exemplary embodiment is related to a method comprising outputting a low amplitude modulation (“AM”) index radio frequency (“RF”) waveform, the waveform simulating tag data timing and bandwidth, removing a direct current (“DC”) component from the waveform to create a chopped portion of the waveform, applying at least one vector analyzer technique on the chopped portion of the waveform, characterizing at least one antenna impedance vector of the waveform.

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