High Perform~ce Analogue MMIC Control Devices for Adaptive Phased Array Applications. s. Lucyszyn and I. D. Robertson Communications Research Group Department of Electronic and Electrical Engineering King's College, University of London, Strand, London, WC2R 2LS, UK Tel.: + 44 71 8732390; Fax: + 44 71 8364781 ABSTRACT Three different MMIC analogue reflection~type control devices are presented. The variable delay line is the fIrst to be realised using monolithic technology, while the phase shifter and attenuator have been designed to achieve optimal bandwidths. With all of the devices, high levels of performance were measured across the 8-12 GHz frequency range.