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. 12, 2009
Filed:
Aug. 31, 2006
In-kwon Ju, Daejon, KR;
In-bok Yom, Daejon, KR;
Dong-pil Chang, Daejon, KR;
Jin-cheol Jeong, Daejon, KR;
Dong-hwan Shin, Daejon, KR;
Youn-sub Noh, Daejon, KR;
In-Kwon Ju, Daejon, KR;
In-Bok Yom, Daejon, KR;
Dong-Pil Chang, Daejon, KR;
Jin-Cheol Jeong, Daejon, KR;
Dong-Hwan Shin, Daejon, KR;
Youn-Sub Noh, Daejon, KR;
Abstract
Provided is a digital attenuation apparatus having ultra broadband and excellent attenuation characteristics. The digital attenuation apparatus includes an input port, an output port, a first transmission line, a second transmission line, a first switching device, a third transmission line, a first resistive element, a second resistive element, a fourth transmission line, a second switching device, a fifth transmission line, and a third resistive element.