FBAR filter with trap rich layer

An organic based wafer level package that includes an acoustic resonator, comprising:

• the acoustic resonator having:
• a first electrode having a first planar portion;
• a second electrode having a second planar portion disposed parallel to the first planar portion;
• a piezoelectric layer disposed between and contacting both the first planar portion and the second planar portion;
• and
• a support layer bonded to the second electrode, the support layer having a trap-rich layer that degrades a carrier lifetimes of a free charge carrier;
• an organic wall contacting the first side of the piezoelectric layer with a first wall via extending through the organic wall and contacting the first electrode and a second wall via extending through the organic wall and contacting the second electrode;
• an organic roof having first and second opposing sides with the first side bonded to the organic wall with a first roof via aligned with the first wall via and a second roof via aligned with the second wall via, wherein a combination of the organic wall, the organic roof and the first planar portion define a first acoustic gap;
• a silicon handle contacting the second side of the piezoelectric layer;
• and
• a silicon wafer cap bonded to the silicon handle, wherein a combination of the silicon handle, the silicon wafer cap and the second planar portion define a second acoustic gap.