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AWR1243BOOST: Max values of Antenna Gain and transmit power

Santhana Raj
Expert 1765 points
Part Number: AWR1243BOOST


Hi,

I am using AWR1243BOOST for long range application. I am trying to find out ways to extend the max range that I can detect in my system.

Using mmWave Sensing Estimator,  I see that by increasing the tranmit power and tx and Rx gain, I am able to increase the Max range for typical detectable object. I also understand the concept and formula behind these calculation.

What I would like to know is :

1. What is the Max value of the Transmit power, Tx gain and Rx gain that I can use with the EVM. I am not considering any hardware changes to EVM. I also would like to know that, if there are any other restrictions on these parameters.

2. The values for additional parameters like detection loss, system loss, implementation margin and  detection SNR play a role in my calculation here. I would like to know the concept behind the values assumed by mmWave sensing estimator.

2a)An added doubt is, If my EVM is being covered by a thin metal sheet, should I increase the detection loss or system loss factor??

Thanks & Regards,

Santhana Raj

  • 0
    TI__Guru 58035 points
    Hello Santhana,
    1. You can get the TX transmit power level from the datasheet (www.ti.com/.../swrs188.pdf) and the antenna gains (both RX and TX) can be found the EVM user guide ( www.ti.com/.../swru507a.pdf)

    2) The system loss could be the RF trace losses , any external attenutors like a covering you might have. On the TI EVM the RX trace loss is ~0.56dB and TX trace loss is ~1.77 dB. The implementation gain and detection SNR depends on the detection algorithm used on the processor side.

    3) You are right, any covering on the antenna that attenuates the signal would get added to the system losses. A metal plate above the antenna is not a good idea, it would attenuate the signal heavily. Generally a different Radom material could be used above the antennas. You could read about this online , en.wikipedia.org/.../Radome

    Regards,
    Vivek