SL3ICS1002 datasheet(22/56 Pages) NXP

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139036

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Product data sheet

COMPANY PUBLIC

Rev. 3.6 — 10 March 2011

139036

22 of 56

NXP Semiconductors

SL3ICS1002/1202

UCODE G2XM and G2XL

13.3 Operating distances

RFID tags based on the UCODE G2X silicon may achieve maximum operating distances

according the following formula:

(1)

(2)

[1]

CEPT/ETSI regulations [CEPT1], [ETSI1].

[2]

New CEPT/ETSI regulations. [ETSI3].

[3]

FCC 47 part 15 regulation [FCC1].

[4]

These read distances are maximum values for general tags and labels. Practical usable values may be

lower due to damping by object materials and environmental conditions. A special tag antenna design can

help achieve higher values.

The typical write range is > 50% of the read range.

Table 13.

Symbol description

Symbol

Description

Unit

Ptag

minimum required RF power for the tag

Gtag

gain of the tag antenna

EIRP

transmitted RF power

wavelength

Rmax

maximum achieved operating distance for a λ/2-dipole

loss factor assumed to be 0.5 considering matching and

package losses

Rdistance

Table 14.

Operating distances for UCODE G2X based tags and labels in released frequency

bands

Frequency range

Region

Available

power

Calculated read distance

single antenna [4]

Unit

868.4 to 868.65 MHz (UHF) Europe [1]

0.5 W ERP

3.6

865.5 to 867.6 MHz (UHF)

Europe [2]

2 W ERP

7.1

902 to 928 MHz (UHF)

America [3]

4 W EIRP

7.5

Ptag

EIRP Gtag

πR

----------

⎝⎠

⎛⎞

⋅⋅

Rmax

EIRP Gtag λ

⋅⋅

()

tag

---------------------------------------

⋅

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