Patent ID: 6664874
Filing Date: 2003-12-16
Classification: H01L,H05K

Abstract:
A mounting structure of a high-frequency wiring board comprising:a high-frequency wiring board; a high-frequency semiconductor element mounted on an upper face and/or lower face thereof; an external electric circuit board; a plurality of electrode pads formed on the lower face of the high frequency wiring board; a plurality of connecting pads formed on an upper face of the external electric circuit board; and conductive connecting members for connecting the plurality of electrode pads formed on the lower face of the high frequency wiring board and the plurality of electrode pads formed on the upper face of the external electric circuit board so as to be opposed to each other, wherein A/B&gE;2 is satisfied, where A is a pitch between a conductive connecting member connected to a high-frequency signal electrode pad and a conductive connecting member connected to a ground electrode pad adjacent thereto, and B is a maximum diameter of the conductive connecting members in sections parallel to the lower face of the high-frequency wiring board, and wherein a space L1 between the lower face of the high-frequency wiring board and the upper face of the external electric circuit board is one sixteenth or less of a wavelength of high-frequency signals processed by the high-frequency semiconductor element.