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.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Jan. 17, 2007
Masayoshi Aikawa, Saga, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Kenji Kawahata, Saitama, JP;
Katsuaki Sakamoto, Saitama, JP;
Masayoshi Aikawa, Saga, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Kenji Kawahata, Saitama, JP;
Katsuaki Sakamoto, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., , JP;
Saga University, , JP;
Abstract
A harmonic oscillator comprises a transmission line resonator in which an oscillation frequency depends on an electrical length of a transmission line and both ends of the transmission line are electrical open ends; an active element for oscillation as a negative resistance connecting to the transmission line resonator; an output line connected to a midpoint portion of the transmission line resonator; and electrical and/or physical suppressing means for suppressing a voltage displacement distribution of second harmonic among the even-order harmonics. The suppressing means is provided at a position which is at least a minimum voltage displacement portion for the second harmonic between the midpoint portion and either ends of the transmission line resonator.