LoRa/BLE Modules
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
25
© Copyright 2016 Laird. All Rights Reserved
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Figure 6: Antenna keepout on DVK-RM1xx PCB (shown in red) with RM1xx module placed near the corner.
Note:
1. RM1xx module placed on edge of host PCB (close to the corner of the PCB).
2. Copper cut-away on all layers in “antenna Keep-out” for a host PCB.
Antenna Keep-out and Proximity to Metal or Plastic
Checklist (for metal /plastic enclosure):
Minimum safe distance for metals without seriously compromising the antenna (tuning) is 40mm
top/bottom and 30mm left or right.
Metal close to the RM1xx chip monopole antenna (bottom, top, left, right, any direction) will have
degradation on the antenna performance. How much; that is entirely system dependent which means
some testing by customer required (in their host application).
Anything metal closer than 20mm will start to significantly degrade performance (S11, gain, radiation
efficiency).
It is best that the customer tests the Range with mock-up (or actual prototype) of the product to assess
effects of enclosure height (and material whether metal or plastic).
