The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 14, 2015

Filed:

Jul. 27, 2012
Applicants:

Chan-wook Baik, Yongin-si, KR;

Ho-young Ahn, Suwon-si, KR;

Yong-sung Kim, Namyangju-si, KR;

Inventors:

Chan-wook Baik, Yongin-si, KR;

Ho-young Ahn, Suwon-si, KR;

Yong-sung Kim, Namyangju-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 25/34 (2006.01); H01J 25/48 (2006.01); B81C 1/00 (2006.01);
U.S. Cl.
CPC ...
H01J 25/34 (2013.01); B81C 1/00063 (2013.01); B81C 1/00619 (2013.01); H01J 25/48 (2013.01); B81B 2201/0271 (2013.01); B81C 2201/019 (2013.01);
Abstract

Electromagnetic wave oscillators each having a multi-tunnel and electromagnetic wave generating apparatuses including the electromagnetic wave oscillators are provided. The electromagnetic wave oscillator includes: a first waveguide which has a folded structure such that a path traveled by an electromagnetic wave through the first waveguide crosses an axial direction a plurality of times; an electron beam tunnel through which an electron beam passes, wherein the electron beam tunnel extends along the axial direction and crosses the first waveguide a plurality of times; and at least one auxiliary tunnel which extends parallel to the electron beam tunnel and which crosses the first waveguide a plurality of times.


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