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Title: RFID tag modification for full depth backscatter modulation

Abstract

A modulated backscatter radio frequency identification device includes a diode detector configured to selectively modulate a reply signal onto an incoming continuous wave; communications circuitry configured to provide a modulation control signal to the diode detector, the diode detector being configured to modulate the reply signal in response to be modulation control signal; and circuitry configured to increase impedance change at the diode detector which would otherwise not occur because the diode detector rectifies the incoming continuous wave while modulating the reply signal, whereby reducing the rectified signal increases modulation depth by removing the reverse bias effects on impedance changes. Methods of improving depth of modulation in a modulated backscatter radio frequency identification device are also provided.

Inventors:
 [1];  [2]
  1. Pasco, WA
  2. Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1012817
Patent Number(s):
7,760,073
Application Number:
11/029,841
Assignee:
Battelle Memorial Institute (Richalnd, WA) RLO
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Scott, Jeffrey Wayne, and Pratt, Richard M. RFID tag modification for full depth backscatter modulation. United States: N. p., 2010. Web.
Scott, Jeffrey Wayne, & Pratt, Richard M. RFID tag modification for full depth backscatter modulation. United States.
Scott, Jeffrey Wayne, and Pratt, Richard M. Tue . "RFID tag modification for full depth backscatter modulation". United States. https://www.osti.gov/servlets/purl/1012817.
@article{osti_1012817,
title = {RFID tag modification for full depth backscatter modulation},
author = {Scott, Jeffrey Wayne and Pratt, Richard M},
abstractNote = {A modulated backscatter radio frequency identification device includes a diode detector configured to selectively modulate a reply signal onto an incoming continuous wave; communications circuitry configured to provide a modulation control signal to the diode detector, the diode detector being configured to modulate the reply signal in response to be modulation control signal; and circuitry configured to increase impedance change at the diode detector which would otherwise not occur because the diode detector rectifies the incoming continuous wave while modulating the reply signal, whereby reducing the rectified signal increases modulation depth by removing the reverse bias effects on impedance changes. Methods of improving depth of modulation in a modulated backscatter radio frequency identification device are also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {7}
}

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