Patent ID: 6737687
Filing Date: 2004-05-18
Classification: H01L

Abstract:
A field-effect transistor device comprising:a semiconductor substrate; a field-effect transistor portion including; a gate electrode; a source electrode; and a drain electrode, said gate electrode, said source electrode, and said drain electrode being disposed on a surface of an active area provided on the semiconductor substrate, and said source electrode and said drain electrode being arranged to sandwich the gate electrode with a space defined therebetween; an electrode defining a line for connection to the gate electrode; an electrode defining a line for connection to the source electrode, said gate-connection-line electrode and said source-connection-line electrode being arranged such that respective portions thereof oppose each other with a space defined therebetween; and an electrode defining a line for connection to the drain electrode, said drain-connection-line electrode being arranged in such a manner that a portion thereof opposes said gate-connection-line electrode with a space provided therebetween, and said gate-connection-line electrode, said source-connection-line electrode, and said drain-connection-line electrode being arranged on the surface of the semiconductor substrate which is coplanar with respect to the surface on which the gate electrode, the source electrode, and the drain electrode are provided; wherein one of the electrode pair portion where said gate-connection-line electrode opposes said source-connection-line electrode and the electrode pair portion where said gate-connection-line electrode opposes said drain-connection-line electrode defines a input-side slot line on the input side for inputting a signal to said field-effect transistor portion and the other of the electrode pair portion where said gate-connection-line electrode opposes said source-connection-line electrode and the electrode pair portion where said gate-connection-line electrode opposes said drain-connection-line electrode defines an output-side slot line on the output side from which a signal is output from said field-effect transistor portion; said gate electrode has a shape which extends along a direction that is substantially perpendicular to the conduction direction of the signal flowing through the slot line on the input side; and the input-side slot line and the output-side slot line are arranged along approximately the same straight line such that the field-effect transistor portion is disposed therebetween.