Patent ID: 7323770
Filing Date: 2008-01-29
Classification: H01L,H03G,H05K

Abstract:
1. A power amplifier module having a power amplifying circuit, comprising: a first wiring substrate having a main surface and a back surface which is opposite to the main surface; a semiconductor chip having an amplifying element of the power amplifying circuit, mounted over the main surface of the first wiring substrate; a plurality of first electrode terminals arranged over the back surface of the first wiring substrate; a plurality of second electrode terminals arranged over the back surface of the first wiring substrate, wherein a land grid array structure comprises the first and second electrode terminals; the plurality of the first electrode terminals are used for inputting and outputting of signals for the power amplifying circuit; the plurality of the second electrode terminals are used for ground potential supply; the first wiring substrate has two pairs of edges opposing each other in a plan view; the plurality of the first electrode terminals are arranged along the two pairs of edges of the back surface of the first wiring substrate; the plurality of the second electrode terminals are arranged inside the plurality of the first electrode terminals over the back surface of the first wiring substrate; the second electrode terminals are not disposed at the two pairs of edges of the back surface of the first wiring substrate; and a width of each of the second electrode terminals, defined in a width direction thereof, is greater than a distance between the two second electrode terminals that are nearest to each other, said distance being defined in said width direction.