AWR1642: AWR1642 additional specfication question

Adam Yao94020

Part Number: AWR1642

Hi champion,
My customer is evaluationg AWR1642, they want to know below specficaiton of the chip which is not listed in the data sheet.

1）Isolation between RX-RX, TX-TX and RX-TX paths

2）Amplitude balance across RX channels

3）Phase balance across RX channels

4）TX power RF flatness

5）Chirp linearity error
6) Minimum Tx power

Could you help to check it?

Thanks,
Adam

over 8 years ago

0 Vivek Dham over 8 years ago

TI__Guru 58035 points

Hello Adam,
The TX- RX isolation is typically around 35dB and TX-TX isolation is ~30dB.
The amplitude and phase mismatchs would be dominated by onboard trace mismatches , which would need to be calibrated out externally on the final product.

Regards,
vivek

0 Adam Yao94020 over 8 years ago in reply to Vivek Dham

TI__Genius 10910 points

Hello Vivek,
Do we have Rx-Rx isolation?
I understand the isolation would be dominated by the antenna and trace isolation on the board. Is this correct? Do you have the isolation data about TI EVM trace and antenna?

Thanks,
Adam

0 Vivek Dham over 8 years ago in reply to Adam Yao94020

TI__Guru 58035 points

Hello Adam,
That is right, the antenna isolation would be dominant. On the TI EVM the RX-RX antenna isolation is >16dB.

Regards,
Vivek

0 Adam Yao94020 over 8 years ago in reply to Vivek Dham

TI__Genius 10910 points

Hello Vivek,
Thanks, do we have TX-RX antenna isolation data?

0 Vivek Dham over 8 years ago in reply to Adam Yao94020

TI__Guru 58035 points

Hello Adam,
The TX-RX antenna isolation is > 30dB.

Regards,
Vivek

0 bginzz over 8 years ago

TI__Prodigy 545 points

Adam,

TX power flatness is typically 1dB over a 2GHz bandwidth.

When the TX is off, you will get more than 30dB isolation. Is that what you are looking for, or are you looking for the minimum TX power when on?

Regards,
Brian

0 Adam Yao94020 over 8 years ago in reply to bginzz

TI__Genius 10910 points

Hi Brian,
Thanks. I am clear now.

Best regards,
Adam

0 user1172731 over 8 years ago in reply to bginzz

Prodigy 10 points

Hi champion,
I am looking for the minimum TX power when the Tx on.
Could you help to check it?
Thanks,
Lin

0 bginzz over 8 years ago in reply to user1172731

TI__Prodigy 545 points

Hi Lin,

Please see transmission power control for a discussion of the TX backoff power control.

Regards,

Brian

0 CDC over 7 years ago in reply to Vivek Dham

Prodigy 145 points

Hello Vivek,

But inside the chip what is the isolation of the RX-RX?

it's possible to be assume that RX-RX isolation it's on the TX-TX isolation order?

Regards,
CDC

0 bginzz over 7 years ago in reply to CDC

TI__Prodigy 545 points

RX-RX isolation is typically better than 35dB.

Regards,
Brian

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AWR1642: AWR1642 additional specfication question