Patent ID: 7652897

Claim:
A high frequency unit comprising: a wiring substrate that includes a high frequency semiconductor electronic component mounted on its front face; a shielding case that surrounds the wiring substrate to shield the wiring substrate; and a shielding plate that contacts a rear face of the wiring substrate to shield the wiring substrate, wherein a ground land wiring is provided on the wiring substrate, a shielding plate opening is provided in the shielding plate, an opening protrusion is provided in the shielding plate opening and is coplanar with the shielding plate, and the shielding plate and the ground land wiring are bonded via the opening protrusion, wherein a resist film for covering a wiring pattern on the rear face of the wiring substrate is formed on the rear face of the wiring substrate, and the shielding plate contacts the wiring substrate via the resist film.