MANUFACTURE OF MICROWAVE CIRCUIT

摘要

PROBLEM TO BE SOLVED: To reduce cost of a microwave circuit and improve its wiring density. SOLUTION: A solid molded object (primary mold process) 1 is obtained by injection-molding synthetic resin having insulation properties in a metal mold. After the surface of the solid molded object 1 is covered with a conducting film 2, synthetic resin soluble in alkali which turns to etching resist 3 is injection-molded (secondary mold process) in a portion turning to the wiring of the solid molded object 1 by using a metal mold. A portion of the conducting film in a region to which the etching resist 3 has not adhered is eliminated by etching. After that, the resist 3 is dissolved and eliminated by using alkaline the solvent, and microwave circuit in which a pattern wiring 2' is formed on the solid molded object 1 is manufactured.