Microwave coupling/combining device and associated microwave generator

A microwave coupling/combining device for coupling and combining at least two microwave sources, comprising a waveguide provided with:

• a sleeve extending longitudinally along a main axis and having two opposite ends comprising a first end provided with a short-circuiting element and a second open end;
• and
• at least one transverse bar extending inside the sleeve along a transverse axis orthogonal to the main axis;
• said microwave coupling/combining device further comprising at least two coaxial connectors provided to be respectively connected to microwave sources, wherein each coaxial connector among the at least two coaxial connectors is externally mounted on the sleeve and has a conductive central core connected to and extended by a conductive antenna extending inside of the sleeve and ending by an end attached to one of the at least one transverse bar, wherein said conductive central core and said conductive antenna are aligned and extend in a direction orthogonal to the transverse axis and to the main axis;
• and wherein, by considering microwave sources emitting microwaves at the same frequency f0 and the same given wavelength λ0, the at least one transverse bar is disposed at a given length L of the short-circuiting element, along the main axis, with:
• L=Lc+k·Lg/2, wherein
• k is a zero or positive integer;
• Lc=p·λg/4;
• Lg=λg plus or minus 10 percent;
• λg corresponds to the guided wavelength of the microwaves inside of the waveguide, which depends on the dimensions of the waveguide;
• p is a correction coefficient less than 1.

A microwave coupling/combining device for coupling and combining at least two microwave sources, comprising a waveguide provided with:

• a sleeve extending longitudinally along a main axis and having two opposite ends comprising a first end provided with a short-circuiting element and a second open end;
• and
• at least one transverse bar extending inside the sleeve along a transverse axis orthogonal to the main axis;
• said microwave coupling/combining device further comprising at least two coaxial connectors provided to be respectively connected to microwave sources,
• wherein each coaxial connector among the at least two coaxial connectors is externally mounted on the sleeve and has a conductive central core connected to and extended by a conductive antenna extending inside of the sleeve and ending by an end attached to one of the at least one transverse bar, wherein said conductive central core and said conductive antenna are aligned and extend in a direction orthogonal to the transverse axis and to the main axis;
• wherein the at least one transverse bar comprises at least one hollow transverse bar, wherein a cooling liquid is circulated inside the at least one hollow transverse bar.