Considerable progress has been made in the development and demonstration of millimeter wave MMIC technology up to frequencies approaching 100 GHz. The recently completed multiyear, ARPA-sponsored, MIMIC program provided a considerable amount of funding and government-contractor team energy to advance the state-of-art with a number of important GaAs-based transceiver building blocks. Unfortuanely, producibility of millimeter wave MMIC transceiver modules has not been similarly addressed to provide a truly low cost, marketable product. This paper considers the module producibility problem and its various technological implications.
Charles R. Seashore,
"Producibility consideration for millimeter-wave transceivers", Proc. SPIE 2558, Millimeter and Submillimeter Waves II, (13 October 1995); doi: 10.1117/12.224258; https://doi.org/10.1117/12.224258