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:
Apr. 28, 2009
Filed:
Jun. 17, 2008
Hyeon Seok Hwang, Gyunggi-do, KR;
Yoo Sam NA, Seoul, KR;
Moon Sun Kim, Gyunggi-do, KR;
Byeong Hak JO, Gyunggi-do, KR;
Kyoung Seok Park, Gyunggi-do, KR;
Hyeon Seok Hwang, Gyunggi-do, KR;
Yoo Sam Na, Seoul, KR;
Moon Sun Kim, Gyunggi-do, KR;
Byeong Hak Jo, Gyunggi-do, KR;
Kyoung Seok Park, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Gyunggi-Do, KR;
Abstract
There is provided a step attenuator having two Pi-type attenuators and one bridged-T type attenuator that share some resistors. The step attenuator is used to prevent a reduction in frequency range caused by use of MOS transistors and reduce attenuation of signal power and frequency band by the MOS transistors, thereby obtaining a low attenuation value and reducing input and output mismatch.