US 12,191,107 B2
Magnetron
Takeshi Ishii, Shiga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/999,068
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jul. 7, 2021, PCT No. PCT/JP2021/025569
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2022/024692, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2020-127997 (JP), filed on Jul. 29, 2020.
Prior Publication US 2023/0187163 A1, Jun. 15, 2023
Int. Cl. H01J 23/00 (2006.01); H01J 23/15 (2006.01); H01J 25/50 (2006.01); H01J 23/20 (2006.01); H01J 23/22 (2006.01)
CPC H01J 23/15 (2013.01) [H01J 23/005 (2013.01); H01J 25/50 (2013.01); H01J 23/20 (2013.01); H01J 23/22 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A magnetron comprising:
an anode cylindrical body having a cylindrical shape with an input-side opening part and an output-side opening part;
a plurality of vanes radially disposed from a central axis of the anode cylindrical body to an inner wall surface of the anode cylindrical body;
a cathode filament disposed along the central axis of the anode cylindrical body;
an input-side magnetic pole and an output-side magnetic pole disposed on the input-side opening part and the output-side opening part, respectively; and
a choke structure disposed inside an opening provided in the input-side magnetic pole, wherein
the choke structure is seamlessly formed and covers an opening rim of the input-side magnetic pole with respect to the central axis of the anode cylindrical body.