Abstract: Disclosed is a radio frequency (RF) filter that vertically integrates an acoustic wave filter with an integrated passive device (IPD) filter. The acoustic wave filter provides selectivity at fundamental frequency band while the IPD filter provides rejection at harmonic frequency bands.

Abstract: Disclosed is a radio frequency (RF) filter that vertically integrates an acoustic wave filter with an integrated passive device (IPD) filter. The acoustic wave filter provides selectivity at fundamental frequency band while the IPD filter provides rejection at harmonic frequency bands.

Abstract: Certain aspects of the present disclosure generally relate to an electronic device having an inductive element made up of a plurality of metal layers including a metal shielding layer with one or more electrically floating metal pieces. One example electronic device has a plurality of metal layers that generally includes a bottom metal layer, one or more middle metal layers disposed above the bottom metal layer, wherein at least one of the middle layers comprises a coil, and a top metal layer disposed above the one or more middle metal layers. At least one of the bottom metal layer or the top metal layer comprises a shield layer. At least a first portion of a first region of the shield layer overlying or underlying the coil comprises one or more metal pieces that are electrically floating and are disconnected from the shield layer.