Inventors:
Thomas Ha - Huntington Beach CA, 92648
International Classification:
H03F 100
Abstract:
An N way carrier cancellation coupler ( ), N being greater than 1, for use in a feed forward power amplifier ( ), comprising a first N way divider ( ), a second N way divider ( ), an N way combiner ( ), N carrier cancellation couplers ( ), the inputs of each of the N carrier cancellation couplers ( ) connected to the first N way divider ( ) and the second N way divider ( ), and the output of each of the N carrier cancellation couplers connected to the N way combiner ( ). An M way distortion cancellation coupler ( ) is also provided, as well as a feed forward power amplifier comprising a feed forward power amplifier having a first loop and a second loop, an N way carrier cancellation coupler ( ), or an M way distortion cancellation coupler ( ), or both.