The development of millimeter-wave integrated circuits has been progressing at a very rapid pace at TRW. Recent developments concentrated on microstrip and wideband stripline components. State-of-the-art performance has been achieved for most of these components. This paper presents these recent advances in Gunn VCOs, stripline mixers, microstrip mixers, multipliers, and filters.
"Recent Advances In Millimeter-Wave Integrated Circuits", Proc. SPIE 0544, Millimeter Wave Technology III, (24 October 1985); doi: 10.1117/12.948260; https://doi.org/10.1117/12.948260