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:
Aug. 19, 2008
Filed:
Nov. 29, 2005
Sang-yoon Jeon, Seoul, KR;
Heung-bae Lee, Suwon-si, KR;
Seong-soo Lee, Suwon-si, KR;
Jinup Lim, Seoul, KR;
Joongho Choi, Seoul, KR;
Sang-yoon Jeon, Seoul, KR;
Heung-bae Lee, Suwon-si, KR;
Seong-soo Lee, Suwon-si, KR;
Jinup Lim, Seoul, KR;
Joongho Choi, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Disclosed is a dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing. The dual-band voltage-controlled oscillator includes a power supply unit for supplying a source voltage; plural voltage-controlled oscillation units for outputting different oscillation frequencies according to controls of a certain tuning voltage; plural bias units for generating driving voltages for driving the voltage-controlled oscillation units and supplying the driving voltages to the voltage-controlled oscillation units; and plural buffers for selectively outputting oscillation frequencies of the plural voltage-controlled oscillation units. The present invention implements the dual-band voltage-controlled oscillator through bias switching and output-buffer multiplexing, which brings an advantage of elimination of interference between output frequencies to enhance phase noise characteristics.