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:
Jan. 02, 1990
Filed:
Nov. 07, 1988
Applicant:
Inventors:
Alfred Lauper, Obfelden, CH;
Andreas Steffen, Schlieren, CH;
Assignee:
Siemens-Albis, AG, Zurich, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
328109 ; 328133 ; 328155 ; 328 55 ; 328111 ; 307262 ; 307518 ; 375122 ;
Abstract
An expander system for pulse signals with enhanced output power level is disclosed. The expander system, which comprises an expander filter and subsequently connected amplifier means, is provided with a supplementary 180 degree phase modulator connected in front of the expander filter. The phase modulator is switched on and off by a control signal delivered from a control stage in such a manner that, during the duration of a pulse signal, the phase modulator produces at least two phase shifts of approximately 180 degrees.