Overview
For item-level reading of packed goods, the Guardwall antenna provides a tightly controlled read zone and intense RF field, critical to penetrating deep into packed cases. When used as a pair, the Guardwall antenna absorbs energy from its opposing mate so that very little passes beyond the exterior face. This configuration maximizes stray read rejection by constraining the read zone to the area within the two antennas. It also increases read reliability by maximizing the intensity within the read zone.
Environmental Specifications
Parameter Typical Units Conditions/Notes
IP Rating IP51 Indoor use only
Temperature 0–40 Celsius Indoor use only
Humidity 5–95 Percent Relative, non-condensing
RoHS N/A Designed to meet RoHS, but not certified RoHS
Electrical Specifications
Parameter Typical Conditions/Notes
Frequency range (FCC) 902–928 MHz North America
Frequency range (ETSI) 865–868 MHz Europe
Far Field Gain 6 dBi
Polarization RHCP & LHCP Dual elements with separate connectors
for two circular polarizations (RHCP and LHCP)
Axial Ratio (Max) 3 dB
3-dB Beamwidth 55 Deg
Front to Back Ratio 22 dB
VSWR* 1.5:1 50 Ω reference
Input Power 30 dBm 30 dBm absolute max
* Some item-level applications—where the tag is close to the reader antenna—can cause a 2:1 VSWR from the antenna to the reader. Users
should ensure that their reader can tolerate a VSWR as high as 2:1.
Mechanical Specifications
Parameter Typical Conditions/Notes
Weight 11 lbs/5 kgs
Connector 2X SMA female Requires accessory cable to connect to
reader’s RP-TNC connector
Radome ABS Designed to meet RoHS, but not certified RoHS
Backplane Aluminum, Class 3 iridite finish
Alloy 5052 H32
Enclosure Aluminum, Designed to meet RoHS, not certified RoHS
painted black
Dimensions 27.6in x 15.8in x 2.9in See drawing for detailed dimensions
702mm x 402mm x 73mm