US 12,418,085 B2
Circulator design and methods of fabricating the circulator
Niels Husted Kirkeby, Santa Ana, CA (US); Brady Fitzgerald, Santa Ana, CA (US); Michael Len, Santa Ana, CA (US); Thomas Lingel, Santa Ana, CA (US); Mark Bowyer, Santa Ana, CA (US); and Benton O'Neil, Santa Ana, CA (US)
Assigned to TTM Technologies, Inc., Santa Ana, CA (US)
Filed by TTM Technologies, Inc., Santa Ana, CA (US)
Filed on Oct. 13, 2022, as Appl. No. 17/965,680.
Claims priority of provisional application 63/270,456, filed on Oct. 21, 2021.
Prior Publication US 2023/0125826 A1, Apr. 27, 2023
Int. Cl. H01P 1/387 (2006.01); H01P 1/38 (2006.01); H01P 11/00 (2006.01)
CPC H01P 1/38 (2013.01) [H01P 1/387 (2013.01); H01P 11/00 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A circulator for radio frequency, the circulator comprising:
a ferrite stripline assembly comprising:
a first ferrite layer;
a second ferrite layer disposed over a first side of the first ferrite layer;
a junction circuit between the first ferrite layer and the second ferrite layer, wherein the junction circuit comprises a first circuit formed on the first side of the first ferrite layer, a second circuit formed on a second side of the second ferrite layer;
a first ground layer contacting the first ferrite layer and opposite to the junction circuit;
a magnet over a first side of the second ferrite layer for providing magnetic bias;
a second ground layer between the second ferrite layer and the magnet, the second ground layer opposite to the junction circuit; and
one or more perimeter grounds located on a respective perimeter of the first ferrite layer and the second ferrite layer, wherein the one or more perimeter grounds are integrated with the first ground layer and the second ground layer.