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. 03, 2013
Filed:
Nov. 28, 2007
Vincenzo Boffa, Milan, IT;
Giuseppe Grassano, Milan, IT;
Fabrizio Gatti, Milan, IT;
Luciano Accatino, Turin, IT;
Giorgio Bertin, Turin, IT;
Alfredo Ruscitto, Turin, IT;
Paolo Semenzato, Rome, IT;
Vincenzo Boffa, Milan, IT;
Giuseppe Grassano, Milan, IT;
Fabrizio Gatti, Milan, IT;
Luciano Accatino, Turin, IT;
Giorgio Bertin, Turin, IT;
Alfredo Ruscitto, Turin, IT;
Paolo Semenzato, Rome, IT;
Pirelli & C. S.p.A., Milan, IT;
Abstract
A tunable delay line for radiofrequency or microwave frequency applications consists of at least one ridge waveguide in which the ridge is movable in the waveguide body so as to vary the width of an air gap defined between the longitudinal end surface of the ridge and a confronting member of the waveguide. The ridge is moved by an actuator external to the waveguide body.