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Original question:

CC1352P: Bypass capacitors

CC1352P: need help check if CC1352P can achieve 700 meters distance

Haiwen Huang
Intellectual 1850 points
Part Number: CC1352P

Dears:

customer want to use CC1352P to design a product which can meet 700m distance requirement, Could you please help check if it's ok for CC1352P or do we have other solution can meet this requirement. Based on customer test , CC1352P just can achieve 195m. Thanks .

  • 0
    TI__Guru**** 317180 points

    To answer this question we need more information. Note that it's not possible to answer your question with the information given since range is highly dependent on both the HW and SW implementation. Please look at https://www.ti.com/lit/pdf/swra603 and start by calculating the expected range for the RF parameters that are used. If the range you are seeing is less than the theoretical range, please look into the checklist in the app note to identify the main contributor for poor range. 

  • 0 in reply to TER
    TI__Intellectual 1850 points

    Thanks for the reply.

    customer hardware uses LAUNCHXL-CC1352P-2;
    The software and hardware used are as follows, they want to know how to set LAUNCHXL-CC1352P-2 to reach the farthest distance?
    Hardware: Now we are using two LAUNCHXL-CC1352P-2 development boards from the official website as one master and one slave;
    Software: The firmware used is the SDK version: simple_central and simple_peripheral in 4.20.01.04;
    For transmitting power,they modify the syscfg file, as shown in the figure below:

  • 0 in reply to Haiwen Huang
    TI__Guru**** 317180 points

    Have you tried to use the Range Estimate calculator (https://www.ti.com/tool/RF-RANGE-ESTIMATOR) which is the first step in the app note I linked to? If you select 1 Mbps BLE you will get an estimated range of ~300 m. In addition the 2.4 GHz band is normally fairly noisy. Have you measured the background noise floor and added this to the calculations? The noise typically limits the achievable range.

    Is 20 dBm for BLE allowed where this is going to be sold? In some regions the power is limited to 10 dBm here.