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:
Feb. 15, 2005
Filed:
May. 20, 2003
Fumio Yamada, Nagano, JP;
Toshiaki Kitamura, Nagano, JP;
Hiroyuki Kobayashi, Nagano, JP;
Koichi Rokuyama, Nagano, JP;
Akihiro Kubota, Nagano, JP;
Shigeru Kasai, Yamanashi, JP;
Takashi Ogino, Yamanashi, JP;
Yuki Osada, Yamanashi, JP;
Fumio Yamada, Nagano, JP;
Toshiaki Kitamura, Nagano, JP;
Hiroyuki Kobayashi, Nagano, JP;
Koichi Rokuyama, Nagano, JP;
Akihiro Kubota, Nagano, JP;
Shigeru Kasai, Yamanashi, JP;
Takashi Ogino, Yamanashi, JP;
Yuki Osada, Yamanashi, JP;
Nagano Japan Radio Co., Ltd., Nagano, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
A coaxial type impedance matching device includes a matching device body including an external conductor and an internal conductor arranged in the external conductor, an input side dielectric disposed in the matching device body and including a first dielectric and a second dielectric, and an output side dielectric disposed in the matching device body and including a third dielectric and a fourth dielectric. Distance between opposed surfaces of the first dielectric and the second dielectric is a predetermined distance, which is in a range of Nλ/4−λ/6 to Nλ/4−λ/6, where λ represents a guide wavelength of an input signal in the matching device body and N represents odd number. Distance between opposed surfaces of the third dielectric and the fourth dielectric is the predetermined distance.