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:
Mar. 31, 2020
Filed:
Jun. 07, 2019
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Donald DiMarzio, Northport, NY (US);
Stephane Larouche, Redondo Beach, CA (US);
Vesna Radisic, Hermosa Beach, CA (US);
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Abstract
A non-reciprocal band pass filter including a transmission line having a plurality of repeating finite size unit cells, where each unit cell has a predetermined length and includes an inductor and a varactor. The filter also includes a signal source providing a transmission signal that propagates on the transmission line, and a modulation source providing a modulation signal that modulates the varactor. A ratio between the predetermined length of the unit cells and a frequency of the modulation signal is selected to provide propagation modes that allow the transmission signal to propagate along the transmission line in one direction in a controlled pass band, but prevent the transmission signal from propagating along the transmission line in the opposite direction in the controlled pass band.