Applicator of microwave plasma generator and microwave plasma generator including this applicator

An applicator of microwave plasma generator comprising:

• an input of microwave from a microwave power source
• a guiding part of a closed profile;
• and
• at least one output of microwave covered by a dielectric cover whose side reversed from the at least one output creates a separation between the applicator and a generated plasma bulk, wherein
• the guiding part is provided on one of the guiding part ends by a first one of the at least one output, on a second end by a second of the at least one output and
• wherein the input is placed in a wall of the guiding part a first distance from the separation of the first of the at least one output and a second distance from the separation of the second of the at least one output while the absolute value of the difference of the first and second distances equals λ/2 where λ is the wave length of the microwave from the microwave power source and the first and second distances correspond to the trajectory of microwave propagation.