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:
Oct. 25, 2016
Filed:
Dec. 18, 2013
Applicant:
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Inventors:
Yi-Hsuan Liu, Hualien, TW;
Hsieh-Hung Hsieh, Taipei, TW;
Chewn-Pu Jou, Hsinchu, TW;
Fu-Lung Hsueh, Kaohsiung, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 21/12 (2006.01); H01F 27/28 (2006.01); H01F 27/40 (2006.01); H03B 5/12 (2006.01); H03L 7/099 (2006.01);
U.S. Cl.
CPC ...
H01F 21/12 (2013.01); H01F 27/2804 (2013.01); H01F 27/40 (2013.01); H03B 5/1212 (2013.01); H03B 5/1228 (2013.01); H03B 5/1256 (2013.01); H03L 7/099 (2013.01); H01F 2021/125 (2013.01); H03B 2201/0216 (2013.01);
Abstract
A varainductor includes a spiral inductor over a substrate, the spiral inductor comprising a ring portion. The varainductor further includes a ground ring over the substrate, the ground ring surrounding at least the ring portion of the spiral inductor and a floating ring over the substrate, the floating ring disposed between the ground ring and the spiral inductor. The varainductor further includes an array of switches, the array of switches is configured to selectively connect the ground ring to the floating ring.