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:
Dec. 12, 1989
Filed:
Nov. 06, 1986
Applicant:
Inventors:
Termano Testi, Monza, IT;
Gabriele Merli, Cassano D'Adda, IT;
Assignee:
GTE Telecomunicazioni, S.p.A., Cassina de Pecchi, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ; H03K / ;
U.S. Cl.
CPC ...
328155 ; 307262 ; 333 / ;
Abstract
This invention covers a phase shifter-equalizer circuit including a purely resistive impedance, a purely reactive impedance, at least one of which adjustable, and a phase inverter device, which permit to adjust in a continuous way the phase between the output current and the input current, while maintaining the amplitude of the output current constant and substantially equal to the amplitude of the imput current versus phase and group delay variations between the two currents. Furthermore, continuous phase adjustment is achieved by adjusting one only parameter of the circuit.