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:
Dec. 23, 1988
Richard A Stern, Allenwood, NJ (US);
Richard W Babbitt, Fair Haven, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A latching type of microstrip reciprocal phase shifter is provided having a oroidal-shaped ferrite core with a length of microstrip conductor wound about the outer cylindrical surface of the core and a ground plane mounted on the inner cylindrical surface of the core surrounding the aperture in the core. A single control wire is passed through the aperture in the core and creates a circular magnetic field in the core surrounding the aperture when the core is pulsed with a unidirectional current pulse. By successively pulsing the control wire with current pulses of opposite polarity, the core may be switched back and forth between a first saturated magnetic state in which it exhibits a first insertion phase with respect to millimeter wave energy traveling between the ends of the microstrip conductor disposed on the outer cylindrical surface of the core and a second non-saturated magnetic state in which it exhibits a different insertion phase with respect to such millimeter wave energy traveling along the microstrip conductor on the outer surface of the core.