• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 53 subscribers
  • Views 488 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC1310: Narrow Band Operation Balun/saw filter

Calex36
Intellectual 1695 points
Part Number: CC1310

Is there any EU narrow band integrated balun/SAW filter to be used in conjunction with the CC1310? At the moment in our project we are using the Johanson 0850BM14E0016 that is a wideband (770 MHz – 928 MHz).

Referring to this post here and app note of Using CC1190 Front End With CC13xx Under EN300220

Is the CC190 Front end with Saw filter the only way of doing this?

Also is this classed as narrowband sub 1GHz operation as minimum rx channel bandwidth of CC1310 is 40kHz?

  • 0
    TI__Guru**** 317180 points

    CC1310 is not a narrow band receiver.

    You can use a SAW filter in addition to the balun you are using. What is the background for the question? It could make it easier to help you impleemnt what you want.

  • 0 in reply to TER
    TI__Guru**** 317180 points

    Any feedback?

  • 0 in reply to TER
    TI__Intellectual 1695 points

    I have been looking into LPWAN networks for EU.

    Determining what hardware this would require alongside CC1310, if would need front end, and hence a saw filter.

    I think I have been getting a little mixed up, With the minimum rx channel bandwidth being 40kHz.

    However relating to these threads that CC1310 could be used with sigfox which is narrowband and the messages are only 100Hz,

    so is it able to work simply because it takes in all messages with the 192 kHz operating band?

    Or is it also a factor of the modulation being compatble with D-BPSK? also mentioned in this thread that you also replied to.

  • 0 in reply to Calex36
    TI__Guru**** 317180 points

    We are no longer supporting Sigfox if that was the main solution you were looking into. 

  • 0 in reply to TER
    TI__Intellectual 1695 points

    Yeah I know, I was just interested on the theory behind it of how it worked when we did support it?

    If possible to mimic on 15.4 stack?

    At a high level Was it due to reasons stated above;

    "so is it able to work simply because it takes in all messages with the 192 kHz operating band?

    Or is it also a factor of the modulation being compatble with D-BPSK? also mentioned in this thread that you also replied to."

    For instance hypothetically if wanted to mirror this on the 15.4 stack, with D-BPSK modulation, recieving multiple messages in a 200kHz operating band?

  • 0 in reply to Calex36
    TI__Guru**** 317180 points

    I believe we only did a TX solution where we "faked" D-BPSK. The receiver in Sigfox is much more complicated. I believe they receive the full bandwidth and then filter out each channel using DSP. The method of generating BPSK on CC13xx only works for very low datarates (~100 bps)