Halvledaranordning med induktor och förfarande vid framställning av en sådan halvledaranordning

摘要

The present invention relates to an integrated circuit for high-frequency applications, comprising a substrate (31) of high resistivity, active components (37, 41) and an inductor (45) above said substrate, whereby the active components and the inductor are arranged laterally mainly separated. According to the invention a layer (33) of low resistivity is comprised below the active components and laterally separated from the inductor. The invention also relates to a method for manufacturing said semiconductor device, which particularly comprises adding two new process steps, a masking step and a doping step, respectively, to a known process.