Patent ID: 7071530

Claim:
A method of forming a semiconductor structure, comprising: providing a substrate having a buried insulative layer; forming a first heavily doped layer within the substrate beneath and in direct physical contact with a bottom surface of the buried insulative layer; forming a semi-conductive layer on a top surface the buried insulative layer such that a bottom surface of the semi-conductive layer is in direct physical contact with a top surface the buried insulative layer; forming a first trench in only the semi-conductive layer and extending through a total thickness of the semi-conductive layer, wherein the first trench surrounds a protected area consisting of a portion of the semi-conductive layer; filling the first trench with a first insulative material, wherein the first trench filled with the first insulative material and the buried insulative layer combine to form a first high impedance noise isolation that surrounds and is in direct physical contact with the protected area on all sides except one side of the protected area to isolate noise from the protected area.