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ADRV9026 Recommended for New Designs
The ADRV9026 is a highly integrated, radio frequency (RF) agile transceiver offering four independently controlled transmitters, dedicated observation...
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ADRV9026 on Analog.com

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LO Leakage at RX ports

Michaelp3

on Sep 22, 2024

Category: Datasheet/Specs

Product Number: ADRV9026

Hello,

According to datasheet, the RX input LO leakage is around -65dBm.

I am interested in using this TRX as part of our doppler radar system with sensitivity goal of -130dBm.

IF I enable the DC offset correction, is it possible to reduce the leakage to around -100dBm?

In general i'd like to be in FDD mode where both TX and RX LOs are the same (for phase coherence).

Thank you

ADRV9026
[edited by: Michaelp3 at 4:59 PM (GMT -4) on 22 Sep 2024]

0 Ramarao

on Sep 23, 2024 3:10 AM
RX DC Offset/ Carrier leakage is around -84dBFS with DC offset init and tracking cal running.

~-11dBm is -2dBFS and -84dBFS is about -93dBm. I would suggest you to test for the DC offset leakage on the EVB and characterize for your requirements.

Michaelp3 said:
In general i'd like to be in FDD mode where both TX and RX LOs are the same (for phase coherence).

This is not an issue.
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0 Michaelp3
on Nov 20, 2024 2:45 AM in reply to Ramarao
Hello,

You mentioned DC offset init and tracking cal - i do not need observation receivers for these functions right?
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0 Ramarao

on Nov 20, 2024 3:13 AM in reply to Michaelp3
Yes, DC offset cal dont need the Observation receiver.
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LO Leakage at RX ports