Title :
DC-20 GHz MMIC multi-bit digital attenuators with on-chip TTL control
Author :
Khabbaz, B. ; Pospishil, A. ; Schineller, E.R. ; Singh, H.P. ; Jorgenson, J.
Author_Institution :
ITT Avionics, Nutley, NJ, USA
Abstract :
Broadband digital attenuators (DC to 20 GHz) featuring on-chip translators for direct TTL control have been designed and fabricated with the ITT multifunction self-aligned gate process for MMIC (monolithic microwave integrated circuit) insertion into advanced EW (electronic warfare) systems. The MMIC digital attenuators provide exceptional performance, with through-state insertion losses of less than 5 dB for a 4-b attenuator, 4 dB for a 2-b attenuator, 2 dB for a switched attenuator, and normalized mean attenuation accuracies within 0.5 dB from DC to 20 GHz for each attenuator. When cascaded, this set of digital attenuators provides the high-dynamic range (>75 dB) required for advanced EW system applications.<>
Keywords :
MMIC; electronic warfare; waveguide attenuators; 0 to 20 GHz; 2 bits; 2 to 5 dB; 4 bits; ITT multifunction self-aligned gate process; MMIC multi-bit digital attenuators; advanced EW; normalized mean attenuation accuracies; on-chip TTL control; on-chip translators; switched attenuator; through-state insertion losses; Attenuators; Control systems; Digital integrated circuits; Electronic warfare; Insertion loss; MMICs; Microwave integrated circuits; Monolithic integrated circuits; Performance loss; System-on-a-chip;
Conference_Titel :
Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 1991. Technical Digest 1991., 13th Annual
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-0196-X
DOI :
10.1109/GAAS.1991.172682
