MICROWAVE CIRCUIT PACKAGES HAVING A REDUCED NUMBER OF VIAS IN THE SUBSTRATE

摘要

A circuit package for a microwave signal comprises a substrate (56) defining a MMIC surface (62) of the substrate (56) and an opposing non-MMIC surface (64) of the substrate (56). The substrate (56) is devoid of signal carrying vias. A waveguide is disposed on the MMIC surface (62). A MMIC (60) is disposed on the MMIC surface (62), and the MMIC (60) is in electrical communication with the waveguide wherein a transmission path for the signal is provided from the I/O port, through the waveguide and to the MMIC. In an alternative exemplary embodiment of the invention, the I/O port of the circuit package is electrically connectable to a PC board (52). The MMIC surface (62) faces the PC board (52) when the I/O port is electrically connected to the PC board (52).