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PSoC™ 4

diba_1468026
New Contributor

Hello,

Can anyone explain why  if we place a PSoC 4 BLE (CYBLE-224110-00), without respecting dimensions of the host PCB-keep out area, can lead us to an unacceptable BLE connection distance (RF-BLE connected at maximum 5cm RF from Tx)?

Based on Cypress datasheet "002-11264_CYBLE-224110-00_EZ-BLE_TM_CREATOR_XT_XR_MODULE.pdf" we have

pastedImage_0.png

Based on our board design we placed the antenna part of PSoC at the edge of host- PCB

pastedImage_1.png

What is the purpose of host PCB-keep out area concerning BLE RF propagation?

Keep in mind that we have an efficient VDD and VDDA in PSoC and also TX Power ,TXP, 0dBm!

Can this issue (the violation of respecting dimensions of the host PCB-keep out area for best RF perfomance) justify this unacceptable BLE RF connection or could be something wrong with other thing (bug)?

Thank you in advance

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1 Solution
GyanC_36
Employee

Hello,

        It is mandatory to configure/Enable the PA/LNA to reach the signal to antenna. For saving the power you can configure CSD/CPS pins further as mentioned in datasheet.

The range you are getting is just because of leakage current in Antenna pin.

-Gyan

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