| 摘要 |
PURPOSE:To facilitate a selection after manufacture without damaging high- frequency characteristics by fitting a pad for measuring and selecting DC characteristics. CONSTITUTION:The pads 21', 23', 24', 25' for measuring and selecting DC characteristics as well as pads 20', 22', 26', 27', 28' for constitution, such as the pads for signals, the pad for a power supply, the pads for biases, etc. are fitted to the monolithic microwave integrated circuit having resistance-capacitance coupled circuit constitution. A selection can be facilitated by measuring the DC characteristics of active elements 1', 2' by using the pads for measuring and selecting DC characteristics. When the upper metallic surface of a capacitor is utilized as the pads 21', 24', 25' and the area of the pad 23' is small, high-frequency characteristics are not deteriorated. |
