AWR1843: Real baseband and complex baseband

Bruce Hu

Intellectual 570 points

Part Number: AWR1843

Tool/software:

Is there any example to show inband and image band?

For example ,

START frequency is 76.1 GHz

ADC Sampling frequency (ksps): 4632

What does inband and image band mean?

Thanks

BRs

Bruce

10 months ago

0 Aydin Kiasat 10 months ago

TI__Expert 5331 points

Hi Bruce,

We do not have a specific example but since AWR1843 receiver system uses IQ structure, the image will be rejected, and the IF signal will be the tone in the positive frequency/Real axis. Following this, there is a second order high pass filter and a low pass filter for isolation.

It is also mentioned in the following app note which I believe you are referencing from Complex base band arch. For FMCW radar systems (Auto) - IQ

Regards,

Aydin

Sensors

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AWR1843: Real baseband and complex baseband