Patent ID: 6863773
Filing Date: 2005-03-08
Classification: H01J

Abstract:
1. A device for producing microwaves to treat a workpiece, the device comprising: a microwave source; a housing defining a microwave resonator cavity, said resonator cavity having an elongated shape, said resonator cavity having a cross section extending substantially perpendicular to a direction of said elongated shape, said cross section having a widening portion defining a first tip region of said resonator cavity in which a first focus region of said cavity, resulting from that widening, is located, said housing also having a non-diverging housing region adjoining said widening portion of said housing; and microwave radiating means, said radiating means having a microwave antenna connected to said microwave source, said microwave antenna having an elongated conductor for producing alternating electromagnetic fields, said radiating means defining an output region for microwaves, said output region following said conductor and extending substantially along said first focus region, said microwave antenna having an elongated extension substantially following said elongated shape of said cavity, said microwave antenna and said resonant cavity producing a substantially homogeneous treatment zone along their lengths.