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Antenna Positioning

For optimal reception of Bluetooth, Wi-Fi®, and cellular signals, ensure that radio waves are not obstructed by housing parts or surrounding objects.

Ensure that radio signals are not obstructed by labels, objects, or surrounding structures.

  • Only mount the device in the installation position shown in Mount the Device.
  • Choose a mounting location with minimal obstructions to ensure reliable communication.
  • Do not apply additional labels to the device, as certain materials may significantly reduce signal quality.
  • Do not modify the device or its surroundings in a way that affects antenna performance.
  • The system integrator is responsible for ensuring adequate antenna performance and compliance with applicable regulations.

Antenna spacing

Maintain sufficient distance between antennas to avoid interference.

  • The distance between antennas should be greater than 1/4 of the wavelength
  • Avoid distances that are multiples of the wavelength
  • When using multiple antennas, base the minimum distance on the lowest frequency

Example:
If using GNSS and Wi-Fi® antennas, maintain a minimum distance of 4.8 cm between antennas.

Internal Antennas

Internal antennas are located inside the upper part of the device housing.

The position of the internal antennas is fixed within the device. Signal performance therefore strongly depends on the device orientation and installation environment.

The positions of the internal antennas are shown in the following image.

Antenna locations
Figure 1: Antenna locations

  1. Diversity cellular antenna
  2. Main cellular antenna (only for types )
  3. Wi-Fi / Bluetooth antenna
  4. GNSS antenna (only for types)

External Antennas

The following information applies to device variants with external antenna connectors.

For information on connector types, pin assignments, and instructions to connect and disconnect the antenna cables, refer to the Connectors chapter.

Refer also to the Safety Instructions for applicable safety requirements.

Antenna installation

Improper antenna installation may reduce cellular communication and GNSS performance.

  • Use only approved antennas which are supplied as accessories by Proemion.
  • Optimize the mounting position to reduce the distance between the antenna and the device or order an alternative antenna with longer antenna cable.
  • Do not extend the antenna cable.
  • Ensure that the minimum bending radius of the antenna cables is at least 8 times the outer diameter.

GNSS Antenna

Use only active GNSS antennas with LNA.

For detailed electrical specifications, refer to the CANlink mobile 3600 Datasheet.

For connector details, refer to the GNSS Antenna Interface.