LP-EM-CC2340R5: Pattern Antenna gain and TX power

Fujinaka-san,

1) Our antenna application note below contains all the characterization details about the inverted F antenna used in our LP-EM-CC2340R5 development board.

https://www.ti.com/lit/pdf/swru120

2) Antennas do not produce power, but instead concentrate power delivered to them in specific patterns given by their construction. Antenna gain is explained in several technical articles - one example is below:

https://www.allaboutcircuits.com/technical-articles/antenna-basics-field-radiation-patterns-permittivity-directivity-gain/

Hope this helps,

Rafael