| 摘要 |
PROBLEM TO BE SOLVED: To provide a power amplifier circuit that suppresses parasitic capacitance between an emitter and a collector, and suppresses heat increase even when outputting high power with a high frequency.SOLUTION: The power amplifier circuit includes: a lower layer metal 11 on which an emitter or a collector is wired; and an upper layer metal 12 on which a collector or an emitter is wired. The upper layer metal 12 is thinned out in terms of area, and, in the area where the upper layer metal 12 is thinned out, the wiring of the lower layer metal 11 is extracted to a height of the upper layer metal 12.SELECTED DRAWING: Figure 1 |
