| 摘要 |
The present invention provides a high-frequency module configuring a micro communication functional module, which includes a base substrate (2) which has multiple pattern wiring layers (6a) (6b) (9a) (9b) and dielectric insulating layers (5) (8) (11) formed therein, and has a buildup surface for smoothing the upper layer thereof, and a high-frequency element layer (4) formed on the buildup surface, which has an inductor (20) formed therein via an insulating layer (19) formed on the buildup surface. The base substrate (2) is provided with a region (30) where the pattern wiring layers (6a) (6b) (9a) (9b) are not formed from the upper layer to at least the mid portion thereof along the thickness direction, and the inductor (20) of the high-frequency element layer (4) is formed directly above the region (30).
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