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. 19, 2009
Filed:
Nov. 09, 2005
Yun-kwon Park, Dongducheon-si, KR;
Duck-hwan Kim, Goyang-si, KR;
Kuang-woo Nam, Yongin-si, KR;
In-sang Song, Seoul, KR;
Seok-chul Yun, Yongin-si, KR;
Byeoung-ju Ha, Seongnam-si, KR;
Jong-seok Kim, Hwasung-si, KR;
Yun-kwon Park, Dongducheon-si, KR;
Duck-hwan Kim, Goyang-si, KR;
Kuang-woo Nam, Yongin-si, KR;
In-sang Song, Seoul, KR;
Seok-chul Yun, Yongin-si, KR;
Byeoung-ju Ha, Seongnam-si, KR;
Jong-seok Kim, Hwasung-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Abstract
A filter formed of film bulk acoustic resonators has a topology that enables a trimming inductor to be fabricated on the same substrate as the resonator arrays. The entire filter can be fabricated on a single chip, utilizing only integrated circuit processes. In an exemplary embodiment, a pair of shunt resonators each have one electrode connected to series-connected resonators. The other electrodes of the two shunt resonators are connected in common to one another. The trimming inductor is connected between the common electrode and ground potential. A third shunt resonator is connected between the series-connected resonators and ground potential.