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Electronics => Beginners => Topic started by: sam1275 on May 08, 2017, 04:16:31 pm

Title: For 802.11n, is it possible to have MIMO on single antenna?
Post by: sam1275 on May 08, 2017, 04:16:31 pm
Hello.
I'm traveling to Asia and using one of their fiber ISP, they give me a modem combo that have wireless router built in. It have a RTL8192ER chipset for wireless, which is 2x2 MIMO, but there's only one antenna on the PCB. I do get 300Mbps indication on some devices, however Wikipedia says it's not possible to have 2 streams on a single antenna:
https://en.wikipedia.org/wiki/IEEE_802.11n-2009#Number_of_antennas
So is it only capable of 1x1:1, despite of the 300Mbps indicator on some wireless clients?
Thanks.
Title: Re: For 802.11n, is it possible to have MIMO on single antenna?
Post by: Chalcogenide on May 08, 2017, 05:47:42 pm
Can you provide a pic of the PCB? It may be possible that it has a PCB antenna and a chip antenna, which could be mistaken for a simple passive.
Title: Re: For 802.11n, is it possible to have MIMO on single antenna?
Post by: sam1275 on May 09, 2017, 12:50:40 am
Photos here:
(https://i.pi.gy/DA4o.jpg)
(https://i.pi.gy/LDo4.jpg)
I just noticed the PCB antenna which I missed before.
Thank you.