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For CYW4343W and CYW43438 chips, please refer to our reference schematic designs in the platforms folder of Wiced Studio.
Thank you for the information. There are very helpful schematics in the platforms folder.
I removed the RF switch and put passive components to antenna path to make the design simple. I will solder the necessary part to use either external or chip antenna. I changed some passive part numbers to have better frequency behavior and designed a draft PCB layout. I've attached the documents for reference.