Thingy 91 - antenna efficiency

[lobaro-theo]

Hello,

i was wondering about the stated antenna efficiency here:

infocenter.nordicsemi.com/index.jsp

The very poor values (< 20%) provided for the efficiency do not fit to the stated VSWR < 3:1 which translates into at least 75% antenna efficiency. 

Thanks for a clarification of the documentation.

Best regards,

Theo

[lobaro-theo]

see "antenna performance"