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CC1310: Will the high standing wave ratio of the antenna damage components

Alex Zhang
Intellectual 1305 points
Part Number: CC1310


HI team：

we have recently customized a spring antenna embedded in a small shell, with a standing wave ratio of 4 and a return loss of -4dB.

May I ask everyone, the standing wave ratio is relatively high, and long-term operation will damage components, leading to permanent transmission failure?

Antenna standing wave ratio：

Return loss：

  • 0
    TI__Mastermind 18825 points

    Hi,

    We have not observed any issues like this when performing load-pull measurements at the antenna reference plane.

    However, we have not tested with a very bad mismatch over an extended period of time (as we recommend that the reference designs are followed).

    • Has the customer followed the procedure described in Section 6 of SWRA161 (AN058 – Antenna Selection Guide): https://www.ti.com/lit/swra161 to obtain these measurements?
    • Can the customer tune the antenna matching network to improve the antenna performance (or add one and tune it if it is not already present)?

    A separate concern is that a high VSWR can cause unwanted spurious emissions, higher current consumption, and reduced output power.

    Regards,

    Zack