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. 10, 1999
Filed:
Jan. 30, 1998
Applicant:
Inventor:
Chee Khon Chong, Penang, MY;
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
3311 / ; 3311 / ; 331175 ; 331185 ; 455256 ; 455264 ;
Abstract
A voltage controlled oscillator (1) comprising a voltage controllable variable resonant circuit (2) having a control input (Vctrl), a positive feedback input (6) and a controllable variable frequency output (7). There is an amplifier (3) having an amplifier input coupled to the controllable variable frequency output (7). A positive feedback path (4) couples the amplifier (3) to the positive feedback input (6) and there is selectable load (5) in parallel with the positive feedback path (4) for selectively reducing the SideBand Noise Ratio.