Users Manual

11/20 OTX-18.US Datasheet Rev H

Design guidelines

7.1 Placement of the module

The Onethinx module has an integrated LoRa antenna, which should be in free space for best

results. The figure below shows the advised module positioning and corresponding pad locations.

Figure 2: OTX-18 PCB design guidelines and pad placement

There are library components available for several commonly-used PCB design IDEs. Please check

the Onethinx website, forum and Github before creating your own.

7.2 Bluetooth antenna

Please refer to the design reference files of the development kit on how to place the Bluetooth

antenna. The antenna used in the reference design is the following:

Fractus FR05-S1-N-0-102

Description

LoRa Antenna

BLE Antenna

Units

Antenna Type

PCB trace

Chip

Frequency range

900-930

2400-2500

MHz

Peak Gain

0dBi

1.7dBi

dBi

Return Loss

>10