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WL1837MOD: antenna selection for re-use of the certification

Matteo Geromin
Prodigy 200 points
Part Number: WL1837MOD
Other Parts Discussed in Thread: WL1835MOD, WL1805MOD, WL1831MOD, WL1801MOD

Dear Support,

We would like to know if our selected antenna MOLEX 47950-0011 ( www.molex.com/.../0479500011_ANTENNAS.pdf ) is compliant for re-use of the TI certification for WL18xx modules.

In particular the Molex antenna has 2.27dBi peak gain at 2.4GHz and 4.9dBi at 5GHz.

Under certified antenna types tables there is this sentence: "The part number is for reference only - any antenna from the listed types with equal or lower gain can be used for re-use of the certification"

So, which of the certified antenna can we use to compare with our selected antenna?

At 5GHz band we know that our Molex antenna has a peak gain higher that all the listed antennas, but we would like to know if this antenna can be used with WL1835MOD/WL1831MOD/WL1805MOD/WL1801MOD modules that works at 2.4GHz only.

Thanks in advance

Best Regards,

Matteo Geromin

  • 0
    TI__Genius 12740 points
    Hi Matteo,

    The antennas that the WL18xxMOD are certified with can be found at:

    processors.wiki.ti.com/.../WL18xxMOD_Regulatory_Product_Certification

    Note that the max allowable gain at 2.4GHz is 3.2dBi and at 5GHz it is 4.5dBi. Thus the antenna will not meet the requirements as the gain is higher than what we are certified for.

    If you do want to do this, then you will need to do a C2PC for FCC and ISED where you will need to repeat some testing and get your own ID. This is an option, but we recommend seeing if you can leverage our current antenna list.

    Also note the following when moving to a different antenna in order to leverage our current certification:
    1) must be of lower or equal gain
    2) Be of the same type listed on our current certification
    3) have similar out of band performance.

    In all cases we recommend consulting with your regulatory test house to determine what additional testing might be needed.

    Thanks,
    Riz