HIGH POWER CAPABILITIES OF WAVEGUIDE SYSTEMS

The temperature rise of rectangular waveguides, cooled by convection and radiation, was computed for X and S band frequencies considering both copper and brass. It was found that the X band TE10 rectangular waveguide could handle from 0.80 to 3.5 kw of average line power while the S band waveguide could handle 15 to 60 kw of average power. Further, comparison of the various modes of propagation indicates that the TE01 in circular waveguide can be far superior however, if size is also a consideration, it is shown that this mode offers no advantage over the TE10 mode in rectangular waveguide until the size of the waveguide exceeds 2 wavelengths. It is shown, too, that results for a particular geometry with non-uniform fields can be scaled only if both Ep and pS are held constant. The ratio Ep is field strength to pressure and the product pS is pressure times characteristic length.