US 12,191,932 B2
Apparatus for minimizing electromagnetic coupling between surface mount device inductors
John C. Baldwin, Simi Valley, CA (US); and Weimin Sun, Santa Rosa Valley, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Dec. 23, 2022, as Appl. No. 18/146,213.
Application 18/146,213 is a continuation of application No. 16/707,776, filed on Dec. 9, 2019, granted, now 11,546,019.
Claims priority of provisional application 62/777,509, filed on Dec. 10, 2018.
Prior Publication US 2023/0131326 A1, Apr. 27, 2023
Int. Cl. H04B 5/26 (2024.01); H01F 27/28 (2006.01); H01F 27/32 (2006.01); H01F 27/36 (2006.01); H05K 1/02 (2006.01)
CPC H04B 5/26 (2024.01) [H01F 27/28 (2013.01); H01F 27/2885 (2013.01); H01F 27/32 (2013.01); H01F 27/363 (2020.08); H05K 1/0216 (2013.01); H05K 1/0243 (2013.01); H05K 2201/1003 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A surface mount device inductor mountable on a printed circuit board, comprising:
an inductor coil configured to generate a magnetic field along an axis when a current is applied to the inductor coil;
an anode structure having a box-like shape with a top wall, a bottom wall, a left-side wall, a right-side wall and an end wall that at least partially encloses a first end of the inductor coil, the top wall disposed over at least a portion of the inductor coil; and
a cathode structure having a box-like shape with a top wall, a bottom wall, a left-side wall, a right-side wall and an end wall that at least partially encloses a second end of the inductor coil opposite the first end, the top wall of the cathode structure disposed over at least another portion of the inductor coil, the cathode structure being spaced apart from the anode structure, the anode structure and the cathode structure including a shield portion disposed at least partially over the inductor coil to thereby reduce electromagnetic coupling, the shield portion of the anode structure and the cathode structure including the top wall thereof and a first portion of the left-side wall and of the right-side wall thereof that extends from the top wall to a location between the top wall and the bottom wall thereof, a second portion of the left-side wall and of the right-side wall thereof that is adjacent the end wall thereof extending from the top wall to the bottom wall thereof.