| 摘要 |
PROBLEM TO BE SOLVED: To improve the gain and the directivity and to reduce the chip area by utilizing an antenna mirror image to increase the gain and the directivity and separating sufficiently circuit functions without causing the increase in inter-component distance associated therewith. SOLUTION: In an MMIC integrating an antenna, a 60GHz processing circuit 11 formed on a major side of a GaAs substrate 10 and consisting of an HBT, resistors and capacitive components, a line 14 formed on the major side of the substrate 10 and connecting to the processing circuit 11, a 2nd ground conductor layer 13 formed on the major side of the substrate 10 via a polyimide film 12 to form a slot antenna consisting of a reverse microstrip line with the line 14 and a 1st ground conductor layer 18 formed to a rear side of the substrate 10 are provided and the thickness of the substrate 10 is selected to be 330μm, that is 1/4 of a wavelength of an electromagnetic wave.
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