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:
Feb. 14, 1995
Filed:
Nov. 12, 1993
Applicant:
Inventor:
Petre Popescu, Kanata, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
327120 ; 377 47 ; 327119 ; 327122 ; 327233 ;
Abstract
A circuit for generating a pair of quadrature output signals from a pair of quadrature input signals in which the frequency of the output signals is double that of the input. The circuit consists of two dual phase shifters, two symmetrical multipliers and a phase controller. The circuit is fabricated by conventional integrated circuit processing technology. A method of generating frequency doubled quadrature output signals is disclosed.