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90C4090    "wide-beam", "high-gain" circular polarized RAIN RFID far field antenna

Identix 85C4090 radiation diagram

Far Field directivity

The Identix 90C4090 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 90C4090 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.

Circular polarization with low axial ratio combined with high gain ensures efficient reading of tags regardless of 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 

Identix 85C4090 polar radiation diagram

Radiation diagram

Product Details

  • Operating frequency:
    900-930MHz (FCC)

  • Input Impedance: 50 Ohms

  • Polarization: circular

  • Far Field gain: +9dBiC

  • -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: 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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