Wide Range RFID Antennas

Impinj Guardwall RFID Antenna

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.

Impinj Guardwall Product Description

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.

• Well-controlled read zone minimizes stray reads
• Optimized for reading item-level tags packed in cases
• Designed for RoHS compliance

  • Environmental Specifications
  • IP Rating IP51 Indoor use only
  • Temperature 0–40 ○C Indoor use only
  • Humidity 5–95 % Relative, non-condensing
  • RoHS N/A Designed to meet RoHS, not certified RoHS
  • Electrical Specifications
  • Parameter Typical Units Conditions/Notes
  • Frequency Range (FCC) 902–928 MHz North America
  • 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
  • VSWR1 1.5:1 50 Ω reference
  • Input Power 30 dBm 30 dBm absolute max