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85DL4090    "wide-beam", "ultra high-gain", dual-linear polarized RAIN RFID far field antenna


Far Field directivity

The Identix 85DL4090 is a "Far Field” type UHF RFID antenna specifically designed for security applications (anti-theft) and loss prevention in retail - EAS Electronic Article Surveillance.


The 85DL4090 antennas has a unique radiation lobe, ideal for applications where a confined reading zone is required such as storefronts and corridors.
The radiating lobe has an opening angle of 40 ° horizontally and 90 ° vertically, and an electric tilt of 15 ° in the horizontal direction.

Identix 85DL4090 implements a high-gain, dual-linear orthogonal polarization radiating element which ensures maximum reading efficiency regardless of tags orientation.

It has a compact, modern and lightweight design that allows easy of installation and aesthetic integration into different types of environments.



  • RFID portals for loss prevention - LP and EAS

  • General use UHF RFID portals

  • Personnel and Vehicle access control 

Radiation diagram

Realized Gain vs Theta at Phi90_port1.jpg

Product Details

  • Operating frequency:
    900-930MHz (FCC)

  • Input Impedance: 50 Ohms

  • Polarization: circular polarization

  • Far Field gain: +8.5dBiL

  • -3 dB Beamwidth - 40° x 90° with 15° electric tilt

  • VSWR:  lower than 1.5:1 across all frequency band

  • Axial ratio: 1dB @ 910Mhz

  • Maximum input power: 20W

  • Connector: two SMA female

  • Dimensions:

    • 420mm x 140mm x 19mm

    • 16.5 x 5.5 x .75 in

  • Ingress protection rating: IP54

  • Base: painted aluminum

  • Radome: PETG plastic 1.5mm thick

  • Weight: 400g – 14 oz

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