I have a regular 1.3 kW magenetron/launcher/stub tuner/waveguide to coax adapter in series and was dissatisfied with losses. (tuner worked perfectly) I am using the exposed (1/4 wave) coax core as a radiator/antenna for heating within a hole. Can a coax center-lead be connected to the magnetron stub, insert some coax inline tuner and incur minimal losses to deliver the most heat to my material? Right now, if it makes a difference, all work is in air but the goal is to run the coax into a vacuum chamber eventually. (I know about physics of plasma at 1 Torr)This eliminates the very cumbersome and expensive waveguide/vacuum-window/waveguide interface.
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