US 12,069,799 B2
Branch coupler having U-shaped and L-shaped microstrip lines
Yu-Chih Chueh, New Taipei (TW)
Assigned to Nanning FuLian FuGui Precision Industrial Co., Ltd., Nanning (CN)
Filed by Nanning FuLian FuGui Precision Industrial Co., Ltd., Nanning (CN)
Filed on Feb. 16, 2022, as Appl. No. 17/672,974.
Prior Publication US 2023/0262881 A1, Aug. 17, 2023
Int. Cl. H05K 1/02 (2006.01); H01R 12/70 (2011.01)
CPC H05K 1/0251 (2013.01) [H01R 12/7082 (2013.01); H05K 2201/09254 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A branch coupler, arranged on a substrate, comprising:
a first branch, arranged on a first layer of the substrate, comprising an input end, an isolation end, a first transmission line, a first branch line and a second branch line, the input end is electrically connected to the isolation end through the first transmission line, the first branch line is electrically connected to the input end, and the second branch line is electrically connected to the isolation end, wherein the first branch line comprises a first U-shaped micro strip line, one end of the first U-shaped micro strip line is electrically connected to the input end, and the other end is suspended and the second branch line comprises a second U-shaped micro strip line, one end of the second U-shaped micro strip line is electrically connected to the isolation end, and the other end is suspended;
a second branch, arranged on a second layer of the substrate, comprising a first output end, a second output end, a second transmission line, a third branch line and a fourth branch line, the first output end and the second output end are connected through the second transmission line, the third branch line is electrically connected to the first output end, and the fourth branch line is electrically connected to the second output end;
wherein the first branch line is electrically connected to the third branch line through a first via, and the second branch line is electrically connected to the fourth branch line through a second via;
the first branch line of the first branch further comprises:
a first micro strip line, one end of the first micro strip line is electrically connected to the input end;
a first L-shaped micro strip line, one end of the first L-shaped micro strip line is electrically connected to one end of the first U-shaped micro strip line, and the other end of the first L-shaped micro strip line is suspended and half surrounds the first U-shaped micro strip line;
a first inverted L-shaped micro strip line, one end of the first inverted L-shaped micro strip line is electrically connected to one end of the first U-shaped micro strip line, and the other end of the first inverted L-shaped micro strip line is suspended;
the second branch line of the first branch further comprises:
a second micro strip line, one end of the second micro strip line is electrically connected to the isolation end;
a second L-shaped micro strip line, one end of the second L-shaped micro strip line is electrically connected to one end of the second U-shaped micro strip line, the other end is suspended and half surrounds the second U-shaped micro strip line;
a second inverted L-shaped micro strip line, one end of the second inverted L-shaped micro strip line is electrically connected to one end of the second U-shaped micro strip line, and the other end is suspended; and
the third branch line of the second branch comprises:
a third micro strip line, one end of the third micro strip line is electrically connected to the input end;
a third U-shaped micro strip line, one end of the third U-shaped micro strip line is electrically connected to the third micro strip line, and the other end faces the first micro strip line and is suspended;
a third L-shaped micro strip line, one end of the third L-shaped micro strip line is electrically connected to one end of the third U-shaped micro strip line, and the other end is suspended and half surrounds the third U-shaped micro strip line;
a third inverted L-shaped micro strip line, one end of the third inverted L-shaped micro strip line is electrically connected to one end of the third U-shaped micro strip line, and the other end is suspended;
the fourth branch line of the second branch comprises:
a fourth micro strip line, one end of the a fourth micro strip line is electrically connected to the input end;
a fourth U-shaped micro strip line, one end of the fourth U-shaped micro strip line is electrically connected to the fourth micro strip line, and the other end faces the first micro strip line and is suspended;
a fourth L-shaped micro strip line, one end of the fourth L-shaped micro strip line is electrically connected to one end of the fourth U-shaped micro strip line, and the other end is suspended and half surrounds the fourth U-shaped micro strip line;
a fourth inverted L-shaped micro strip line, one end of the fourth inverted L-shaped micro strip line is electrically connected to one end of the fourth U-shaped micro strip line, and the other end is suspended.