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What is maximum certifiable output level for CC1100E in Japan (470MHz band)?

Derek
Mastermind 9691 points
Other Parts Discussed in Thread: CC1100E, CC1120, CC1101

Hello,

   I read through ARIB STD T67 and I think the max RF output is 10mW for the 470MHz band. What power outputs have people achieved certification for with the CC1100E? I know the part can go much higher but I'm only interested in what can get approved for use there.

Thanks,

Derek

  • 0
    TI__Mastermind 39860 points

    STD T67 is for narrowband applications with channel spacing of 12.5 and 25 kHz. CC1100E is not designed to meet these requirements. CC1120 will be the right part to look at.

    CC1100E was developed for STD T96 at 950 MHz. This standard is being replaced by T108 at 920 MHz. For T108 you should look at CC1101 or CC1120.  

  • 0 in reply to Sverre
    Mastermind 9691 points

    Hello Sverre,

       Thanks for your reply. I'm reading through T108 right now; looks like a big improvement over having to use 950MHz. I'm working on a simple sensor system and am trying to see if we can mostly use the 433MHz band. As part of that I'm trying to figure out how we can operate in Japan since the 433MHz frequency is blocked (or has very low power levels). What do most 433MHz users do for Japan? The application is not RFID, so I can't use the 433MHz RFID standard that they have.

    Regards,

    Derek

  • 0 in reply to Derek
    TI__Mastermind 39860 points

    For sub 1-GHz operation most of the development is targeting compliance with T108 (and, yes, T108 is a big improvement over T96). Not sure why you want to use 433 MHz, but I presume this is for maximum range. Assuming everything being equal except for the RF frequency 433 MHz will give approx twice the range over 920 MHz. However, 920 MHz allows higher output power than 433 MHz operation so 920 MHz will be the preferred frequency unless you are targeting narrowband applications. In the latter case there will be an upper limit on the data rate of 4.8 kbps for 12.5 kHz channel spacing.