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. 12, 2016
Filed:
Dec. 28, 2014
Chung-ang University Industry-academy Cooperation Foundation, Seoul, KR;
Dong-Hyun Baek, Seoul, KR;
Keum-Won Ha, Gwangju, KR;
Hyuk Ryu, Seoul, KR;
Jin-Hyeon Lee, Cheonan, KR;
Jeong-Geun Kim, Seoul, KR;
Abstract
A complementary Colpitts voltage-controlled oscillator having the properties of low power and low phase noise are disclosed. The disclosed complementary Colpitts voltage-controlled oscillator includes: a first circuit composed as a PMOS Colpitts voltage-controlled oscillator having a first PMOS transistor, a first current source, a first capacitor, a second capacitor, and a first inductor but with the first inductor removed; a second circuit composed as an NMOS Colpitts voltage-controlled oscillator having a first NMOS transistor, a second current source, a third capacitor, a fourth capacitor, and a second inductor but with the second inductor removed; and a first transformer and a second transformer arranged between the first circuit and the second circuit.