| 摘要 |
PURPOSE:To prevent deterioration of a noise exponent on account of the loss of a dielectric substrate mounting a module, to enlarge the choices of the dielectric substrate, to reduce the cost of a device and to minituarize it by forming a waveguide-distribution constant line conversion circuit on the carrier of the micro wave IC module. CONSTITUTION:The waveguide-distribution constant line conversion circuit 15 is formed at the back of the one end side of the carrier 12 in the micro wave IC module 11. When the carrier 12 is mounted on the dielectric substrate 14, the waveguide-distribution constant line conversion circuit 15 is set in such a way that it protrudes from a slit hole 16 provided at the side of a waveguide 17 into the waveguide by a prescribed length. The waveguide-distribution constant line conversion circuit 15 receives a micro wave in the waveguide and transmits it to a high frequency circuit including a semiconductor element which is formed on the same carrier 12. A cover 13 seals up and protects the high frequency circuit formed on the carrier 12. |
