IWRL6432AOP: Antenna design

Isogai Takeshi

Prodigy 490 points

Part Number: IWRL6432AOP

Tool/software:

Q1.

https://www.ti.com/lit/ds/symlink/iwrl6432aop.pdf

7.14 Antenna Positions Figure 7-10 shows the placement and relative spacing of the antennas

The distance dimension from the IC package edge to the antenna does not match. Can the dotted line indicating the positional relationship between RX2 and TX1 be ignored?

Q2. Can you provide the antenna structure diagram, including:

- Material info

- Thickness

- Distance from the GND plane

Q3. Can you provide any recommendations or precautions for customer PCB design.

(e.g., surrounding pattern shapes, distance from other components, etc.).

Not much info in the "HW Design Guide Bring up, Schematic and Layout checklist xWRL6432AOP-1-2.xlsx."

1 month ago

0 Saransh Gautam 1 month ago

TI__Prodigy 500 points

Hello!
We are looking into your query. Please allow us some time to respond.
Thanks.

0 Swarnendu Chattopadhyay 1 month ago

TI__Expert 3730 points

Hi,

I would like to request you to refer to the section: 7.13 Antenna Radiation Patterns in the data sheet (IWRL6432AOP Single-Chip 57 to 64GHz Industrial Radar Sensor with Antenna On Package (AOP) datasheet (Rev. A))

This section depicts guidelines on IC placement and concerns regarding the radiation pattern of the antenna.

For Q1 and Q2 could you please share some background so that I understand the requirements?

Thanks,

Swaranendu

0 Isogai Takeshi 1 month ago in reply to Swarnendu Chattopadhyay

TI__Prodigy 490 points

Thank you for the advice of section 7.13.
Does the "trapezoidal cutout" mean of cupper removing or PCB holes?

The background of this question is we would like to simulate a radiation pattern of our radar module.

Please check a drawing on sheet No.8 distance unmatched.

0 Swarnendu Chattopadhyay 1 month ago in reply to Isogai Takeshi

TI__Expert 3730 points

Hi,

The trapezoidal cut is not just the copper removal but basically creating a hole of that shape.

I am extremely sorry; I could not find the figure you are referring to be there is page 8.

Are you referring to the below figure?

When you say, "does not match", which parameter do you refer to?

Thanks,

Swarnendu

0 Isogai Takeshi 1 month ago in reply to Swarnendu Chattopadhyay

TI__Prodigy 490 points

It seems that the positional relationship of the patch antenna does not match the values in the datasheet's diagram.
plase find the the diagram below?

For simulating the radiation pattern, information on each dimension and material is required, appreciate your support.

0 Swarnendu Chattopadhyay 1 month ago in reply to Isogai Takeshi

TI__Expert 3730 points

Hi,

Thanks for explaining your concern in detail. I understand now.

Yes, some of the numbers in the data sheet are incorrect. We are rectifying them, and I am expecting the updates to be reflected by end of this month.

Appreciate your patience.

Thanks,

Swarnendu

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IWRL6432AOP: Antenna design