AWR1243: PSLoopBack to test BPM phase shifter performance

radarJunkie

Expert 2090 points

Part Number: AWR1243

Hello,

I was wondering if I can use the PSLoopback (PhaseShifter Loopback) to measure the phase shifter performance.

If I set up a frame with 2 chirps. The first chirp with Profile 0 which has a 0 degree phase shift. The second chirp with Profile 1 which has a 180 degree phase shift. Now my frame has these two chirps; one with 0 degree phase shift and the other one with 180 degree.

Before the frame trigger, I set up the PSLoopback frequency and enable it. Then I trigger the frame. The main question is does the PSloopback test actually follow the settings of the biphase modulator or it does not change the state of the phase shifter during chirps during loopback ?

Regards,

over 6 years ago

0 Cesar over 6 years ago

TI__Guru*** 140514 points

HI,

I have referred your question to the Radar Studio expert

thank you
Cesar

0 Vivek Dham over 6 years ago in reply to Cesar

TI__Guru 58035 points

Hello RJ,
I assume you are referring to BPM configuration ( 0 / 180 deg phase). You can test the BPM performance using the PALOOPBACK. This will use the BPM configuration configured by you. So you can set 0 deg and 180 deg phase shift and look at the loopback signal. The loopback IF frequency of the signal can be configured in the same API.

Regards,
Vivek

0 radarJunkie over 6 years ago in reply to Vivek Dham

Expert 2090 points

Thank you for your reply Vivek ! Thank you Cesar as well.

Regards,

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AWR1243: PSLoopBack to test BPM phase shifter performance