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:
Nov. 11, 2008
Filed:
May. 02, 2006
Applicants:
Jin-hyuck Yu, Hwaseong-si, KR;
Je-kwang Cho, Seongnam-si, KR;
Inventors:
Jin-Hyuck Yu, Hwaseong-si, KR;
Je-Kwang Cho, Seongnam-si, KR;
Assignee:
Samsung Electronics, Co., Ltd., Suwon-Si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 5/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A frequency fine tuning circuit for use in a voltage-controlled oscillator is provided. The frequency tuning circuit includes a first varactor, a second varactor and a center bias unit. The second varactor is coupled to the first varactor at a first node. The center bias unit maintains a node voltage of the first node at a constant bias voltage level.