I have a prototype BlueTooth LE board with CC2541 chip featuring inverted F antenna, but the board is not working. I need an experienced professional to review the schematic and layout, make the proper modification on the schematic and layout. The current prototype relies on external power supply, but an on board power supply needs to be added. I would like L6920 power supply from STMicroelectronics, but I am open to suggestions. Also this layout must be in its smallest form factor possible.