Gen 2 tutorial

rfid_Gen_2_tutorialUHF Gen 2
System Overview

JAG. Sept 2005

Texas Instruments Proprietary Information

1

Principles of Operation
RADIO FREQUENCY SPECTRUM
100 kHz 1 MHz 10 MHz
VHF

100 MHz

1 GHz

10 GHz

LF

MF

HF

UHF

134 kHz

13.56 MHz

2.45 GHz5.8 GHz 860 ~ 960 MHz

LF

TagTag-it

UHF

iAt UHF frequencies, longer reading distances are achievable. iData-rates are much higher iSignals don’t pass through materials as well as lower frequencies. iReflections can extend the read range, but make the reading zone less well defined. (Ghost readings from labels thought to be out-of-range)
JAG. Sept 2005 Texas Instruments Proprietary Information 2

Global Regulatory Situation
To operate worldwide, a UHF Tag must be capable of replying to different frequencies to meet all regulations.

North America Band (MHz)