To help us answer your question,, we need to know which product and which particular certification test this question is for, and what exact antenna specification you are looking for which is not already in the product datasheet.
Hi Thomas,
sorry I forgot to mention that we use the N5 modules (N5150M8CD and N5150M4CD).
unfortunately the antenna specs on the product datasheet is not enough.
The specification required is something like this document (http://www.elite-it.info/Software/Real/Antenna_Specification_example.pdf).