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:
Jun. 11, 1997
Applicant:
Inventors:
Nikolay Tchamov, Fin-33720 Tampere, FI;
Petri Jarske, FIN-34240 Kammenniemi, FI;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
331 57 ; 331 45 ; 327266 ; 327268 ; 327287 ; 327290 ; 327274 ; 330252 ;
Abstract
A ring oscillator comprising a cascade connection of two or several delay stages (31 to 33), wherein each delay stage comprises two differential pairs of two transistors (Q1, Q2; Q3, Q4; Q5, Q7). In the ring oscillator, the collector resistors and the emitter resistor of a traditional ring oscillator are replaced by coils (L1 to L6) in all stages.