| 摘要 |
PURPOSE:To contrive to miniaturize a microwave transistor device and to make the device easy to handle by a method wherein the two microwave transistor elements are formed on one chip, and moreover, the microwave transistor elements are constituted along with two groups of input/output conductors as one unit. CONSTITUTION:In a composite Tr chip 18, whereon two microwave transistor (Tr) elements are formed, source electrodes S are each arranged on both ends and the center of the upper surface thereof. A gate electrode G1 and a drain electrode D1, which are respectively used as the input electrode and output electrode of the microwave transistor (Tr) element on one side, are arranged between the source electrode on one end and the source electrode on the center, while a gate electrode G2 and a drain electrode D2, which are respectively used as the input electrode and output electrode of the microwave transistor (Tr) element on the other side, are arranged between the source electrode on the other end and the source electrode on the center. Moreover, the electrodes G1 and G2 are respectively connected to a first input conductor 19 and a second input conductor 20 and the electrodes D1 and D2 are respectively connected to a first output conductor 21 and a second output conductor 22. By such a way, the two transistor elements are formed on the one chip 18 and the two transistor elements are constituted along with two groups of the conductors 19-22 as one unit. As a result, this microwave transistor device becomes a smaller size and can be much easily handled compared with the conventional microwave transistor devices using two microwave Tr units. |
