Lumia 920 antenna description

FCC filing:

https://apps.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=912475&typ=8374&fcc_id='PYARM-821'

Click on "SAR" test report, p. 9 for the antenna description.

As a side note, some time ago Apple was granted a bunch of MIMO LTE antenna patents most likely in anticipation of the iPhone 5.