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:
Jun. 13, 2000
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 ; 331167 ; 3311 / ; 331179 ;
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). The voltage controlled oscillator (1) also has an amplifier (3) having an amplifier input coupled to the controllable variable frequency output (7) and an oscillator output (Out). A positive feedback path (4) couples the amplifier (3) to the a positive feedback input (6) and a frequency dependent negative feedback path (5) provides increased negative feedback to the amplifier (3) as the Radio Frequency increases.