公开(公告)号：US11201602B1

公开(公告)日：2021-12-14

申请号：US16948411

申请日：2020-09-17

Applicant: Analog Devices, Inc.

Inventor： Ekrem Oran ,  Faith Kocer ,  Santosh Kudtarkar ,  John Poelker ,  Po-Hao Yeh ,  Christopher O'Neill ,  Christoph Steinbrecher

IPC: H05K7/00 ,  H03H11/04 ,  H01L25/18 ,  H01L23/66 ,  H01L23/552 ,  H05K1/16 ,  H05K1/14 ,  H05K1/18

Abstract: Apparatus and methods for tunable filtering are provided. In certain embodiments, a tunable filter is implemented using one or more controllable capacitors formed on a semiconductor die and using one or more shielded integrated inductors formed on a secondary circuit board that attaches to a carrier circuit board. Additionally, the shielded integrated inductors are formed from patterned metallization layers of the secondary circuit board, and shielding is provided on the secondary circuit board and/or the carrier circuit board to shield the inductors from the semiconductor die and/or other components.