A system for improving the uniformity of distribution of microwave power in a microwave cavity, includes a magnetron, a wave guide extending between the magnetron and the interior of the microwave cavity for coupling microwave power into the microwave cavity and drive means operative coupled to the wave...http://www.google.com.au/patents/US4037071?utm_source=gb-gplus-sharePatent US4037071 - Method and apparatus for improved distribution of microwave power in a microwave cavity
