AWR1443BOOST: Can we reduce TX output power ?

user4916662

Part Number: AWR1443BOOST
Other Parts Discussed in Thread: AWR1443

I always appreciate your kind support. Thank you.

I'm preparing for certification test for my AWR1443BOOST.

In the current datasheet, the output power of the chip AWR1443 is "TYP 12dBm" in the section 5.7.

This value seems a little bit large and dangerous for certification, so I'd like to reduce it, maybe 2 dB.

But it seems that there is no description of any function to control TX power.

On the other hand, in the "MMWAVE SDK User Guide",

it says there is a parameter "Tx output power back-off code for tx antennas" in the "profileCfg" section of config files.

Is this the parameter to reduce TX output power ?

( If so, I don't understand why TI didn't mention it in the chip datasheet. )

Is the unit is "dB" ?

What is the allowable range for this parameter ?

0 Raghunandan Kamath over 8 years ago

Hello Amano-san,

Your understanding is right with reference to "PF_TX_OUTPUT_POWER_BACKOFF" in the profile configuration.

You can reduce the TX antenna power by setting the required dB reduction in this parameter. The reduction may not be exactly as desired.

Eg: If the "PF_TX_OUTPUT_POWER_BACKOFF" = 3, then the TX power value may be in range of ~8.9dB to 9.2dB .

The unit here is dB.

As mentioned in the "AWR1xx_Radar_Interface_Control.pdf" the range for this parameter : Valid values: [0, 1, 2, 3, 4, 5, 6, 12, 18, 24, 30]

We will take this feedback and check if we can publish this in the datasheet.

Hope this is helpful.

Thanks,

Raghu

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