| 摘要 |
A microwave-millimeter wave circuit device with a coplanar wiring includes a dielectric substrate having a dielectric region, a ground conductor connecting wiring and circuit elements formed on the dielectric substrate, a wiring electrically connected to the circuit elements and crossing over a part of the ground conductor connecting wiring on the dielectric substrate, and ground conductor patterns separated from each other by the wiring, being electrically connected to each other via part of the ground conductor connecting wiring, and forming the coplanar wiring on the dielectric substrate, together with the wiring. At least one end of that part of the ground conductor connecting wiring via which the ground conductor patterns are electrically connected to each other is provided with an extended portion which is at least 10 mum long, in order to permit the coplanar wiring to be redesigned in compensation for variations in characteristics of the circuit elements so that the cost of manufacturing the microwave-millimeter wave circuit device with the coplanar wiring can be reduced.
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