A lesson in wireless engineering from the Raspberry Pi. 

The Senior RF Engineer Carl Turner at Laird Connectivity Solutions, has made a glowing review of the Proant Niche Antenna on the Raspberry Pi Zero in Embedded Computing Design.

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Proant Dual Band Niche antenna licensed to Raspberry Pi

For the second time, Proant antenna technology is present on the annual Raspberry Pi product release. The Pi B+ uses a Proant designed antenna for 2,4 and 5 GHz radio.

More info @Raspberry.org:

https://www.raspberrypi.org/blog/raspberry-pi-3-model-bplus-sale-now-35/