CC2651R3SIPA: Layout guidelines

Koichiro Tashiro

Part Number: CC2651R3SIPA

Hi,

My customer is designing their board with CC2651R3SIPA.
According to datasheet section 10.4.2 and Figure 10-4, the recommendation is to place the module near the PCB edge (1mm).
But the customer wants to place the module in the middle of PCB due to their layout restrictions.

Q1) Is this acceptable?
Q2) If the answer to Q1 is "Yes", the customer want to know how much non-pattern area needs to be kept outside of the antenna.
Please see below figure.

Thanks and regards,
Koichiro Tashiro

over 1 year ago

0 Bun Kuch over 1 year ago

TI__Expert 6580 points

Hi Koichiro Tashiro,

Q1. No, it will detune the antenna and change performance. I will check with my team to see if there's an alternate way to move the device to the center.

Best regards,

Bun

0 Koichiro Tashiro over 1 year ago in reply to Bun Kuch

TI__Mastermind 22945 points

Hi Bun,

Thanks for your reply.

Bun Kuch said:
I will check with my team to see if there's an alternate way to move the device to the center.

The customer is waiting for the alternate solution.

Thanks and regards,
Koichiro Tashiro

+1 Bun Kuch over 1 year ago in reply to Koichiro Tashiro

TI__Expert 6580 points

Hi Koichiro Tashiro,

Unfortunately, this dimension is fixed. If the customer wants to move the IC towards the center of the board, then they either have to use an external antenna or re-tune with externals components.

Best regards,

Bun

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CC2651R3SIPA: Layout guidelines