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Monza X Antenna Design Application Note


Download Monza X Antenna Design Application NoteDownload File


The Impinj Monza® X-2K Dura and Monza® X-8K Dura ICs are UHF Gen2 RFID tag chips featuring an I2C data interface in addition to the UHF RF link. This application note provides details of the Monza X RF interface. Concepts presented here include the following:

  1. Antenna and air link principles unique to UHF RFID
  2. Monza X RF port characteristics and equivalent models
  3. Antenna options and antenna types suitable for use with Monza X
  4. Impedance matching techniques

Impinj publishes a separate application note detailing the data interface, available here.:

This application note references and builds upon information documented in the Monza X Dura data sheets.

A set of example antennas is provided with this document in the form of a zip archive of DXF layout artwork. The attached zip contains the full antenna design application note and the following files, referred to in this document:

  • MonzaX-slot1.DXF
  • MonzaX-slot2.DXF
  • MonzaX-loop1.DXF
  • MonzaX-loop2.DXF
  • MonzaX-monopole1.DXF
  • MonzaX-monopole2.DXF

Download Monza X Antenna Design FilesDownload File


The layout files are intended to streamline the integration of Monza X into customer applications which call for an antenna on a circuit board. Monza customers are free to use these layouts, modify them as necessary, and integrate them into their pcb designs. All of the layouts have a layer called “ground” which shows keepouts or critical features in the immediate vicinity of the antenna. The outer boundaries of the ground polygon, away from the antenna, are non-critical and may be modified as desired. Each antenna presented in this app note has been physically constructed and measured. Performance data come from actual over-the-air measurements in the Impinj antenna chamber.

Also included here is the Monza X demo board schematic.

Download Monza X Demo Board SchematicDownload File

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Impinj (NASDAQ: PI) wirelessly connects billions of everyday items such as apparel, medical supplies, and automobile parts to consumer and business applications such as inventory management, patient safety, and asset tracking. The Impinj platform uses RAIN RFID, delivering information about items to the digital world and enabling the Internet of Things.