sfx2000
Part of the Furniture
Interesting article...
Couple of things to consider however...
1) Conducted Path Measurements - you can measure each RF chain, but you need to consider that the impendance match for conducted path is 50 ohm, typical free space matching for EIRP is 37 ohm, so the numbers will change.
2) EIRP is a magical number - what is really important is TRP, and this can only be done in a RF chamber - Rohde&Schwarz has a mini chamber that works well (the DST-200), or one can go for the big-dog, the TS8991
Wireless OEM's spend big money on these items and similar, for example the "StarLab" SATIMO chamber -- which is a gold standard in the RF world.
The FCC's rules here, along with the EU, Anatel, and other regulatory agencies - many follow the guidance of the FCC - but at the same time, there is interpretation of these rules... there are weasel words perhaps, and also loopholes to be exploited -- bending, rather than breaking a given rule.
Most OEM's do have a team that is specifically focused on the Regulatory aspects of the products they develop.
I'm not saying that Asus is in the right or wrong, but this article is only one aspect. This is a rat-hole that perhaps SNB doesn't want to get in to - considering the Netgear-Asus litigation - now that the article is published, can't really un-ring the bell there...
sfx
Couple of things to consider however...
1) Conducted Path Measurements - you can measure each RF chain, but you need to consider that the impendance match for conducted path is 50 ohm, typical free space matching for EIRP is 37 ohm, so the numbers will change.
2) EIRP is a magical number - what is really important is TRP, and this can only be done in a RF chamber - Rohde&Schwarz has a mini chamber that works well (the DST-200), or one can go for the big-dog, the TS8991
Wireless OEM's spend big money on these items and similar, for example the "StarLab" SATIMO chamber -- which is a gold standard in the RF world.
The FCC's rules here, along with the EU, Anatel, and other regulatory agencies - many follow the guidance of the FCC - but at the same time, there is interpretation of these rules... there are weasel words perhaps, and also loopholes to be exploited -- bending, rather than breaking a given rule.
Most OEM's do have a team that is specifically focused on the Regulatory aspects of the products they develop.
I'm not saying that Asus is in the right or wrong, but this article is only one aspect. This is a rat-hole that perhaps SNB doesn't want to get in to - considering the Netgear-Asus litigation - now that the article is published, can't really un-ring the bell there...
sfx