topic Re: What is the antenna gain for Rukus R300 ? in Access Points - Indoor and Outdoor

What is the antenna gain for Rukus R300 ?

tiger_liu — Tue, 12 Apr 2016 19:22:00 GMT

I found from Rukus R300 datasheet that the physical antenna gain is up to 3dBi per spatial stream. The Rukus R300 has two spatial streams. When calculating EIRP for Rukus R300, should I use 3 dBi or 6 dBi ?

Re: What is the antenna gain for Rukus R300 ?

karl_lavender_7 — Tue, 12 Apr 2016 19:29:33 GMT

You would want to use 3, the other spatial stream should not be impacting the range of the broadcast.

Re: What is the antenna gain for Rukus R300 ?

tiger_liu — Tue, 12 Apr 2016 19:32:56 GMT

Does the antenna gain changes depending on the Antenna angle ?

Re: What is the antenna gain for Rukus R300 ?

tiger_liu — Wed, 13 Apr 2016 06:46:19 GMT

I was told by Rukus expert that I need to add combining gain due to multiple chains in order to calculate EIRP.

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Wed, 13 Apr 2016 09:30:00 GMT

This is highly dependant on your regulatory body, please check your regulations.

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Wed, 13 Apr 2016 09:31:35 GMT

Always

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Wed, 13 Apr 2016 09:32:35 GMT

Why are you looking at calculating EIRP?

Re: What is the antenna gain for Rukus R300 ?

tiger_liu — Wed, 13 Apr 2016 09:33:33 GMT

Can you please elaborate a bit more how the regulation body define the Antenna Gain differently ?

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Wed, 13 Apr 2016 09:42:00 GMT

Your regulatory body will tell you how to calculate EIRP and what values are to be taken in to consideration

Here in the UK its Peak Antenna Gain Value + Beamforming Gain + TX Power.

As you can see we don't have combining gain.

Re: What is the antenna gain for Rukus R300 ?

tiger_liu — Wed, 13 Apr 2016 09:50:13 GMT

I'm doing Predictive Planning. Can you share me the link of Regulatory body in UK ?

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Wed, 13 Apr 2016 10:27:13 GMT

We are governed by ETSI:

http://www.etsi.org/deliver/etsi_en/301800_301899/301893/01.07.00_40/en_301893v010700o.pdf

http://www.etsi.org/deliver/etsi_en/300300_300399/300328/01.09.01_60/en_300328v010901p.pdf

Re: What is the antenna gain for Rukus R300 ?

robert_lowe_722 — Tue, 21 Jun 2016 14:26:16 GMT

Hi Sean, how do you calculate beamforming gain? Surely this is a result of the environment the client receives the signal in rather than any additional tx power? really useful info here especially the links below.

Re: What is the antenna gain for Rukus R300 ?

seanmuir — Tue, 21 Jun 2016 14:36:50 GMT

I think the ruling is aimed at manufacturers and this is done at the AP based on the pattern that the AP selects to communicate with the client.

If you want to calculate EIRP then off course the easist way is to just use Peak Antenna gain + TX Power - cabling and connector losses if used.