Title :
Integrated digitally controlled 6-bit phase shifter, 4-bit attenuator, and T/R switch using multifunction self aligned gate process
Author :
Singh, H. ; Willems, D. ; Bahl, I. ; Naber, J. ; Kelly, T. ; Sadhir, V. ; Jorgenson, J. ; Studtmann, G. ; Sadler, R. ; Drinkwine, M. ; Geissberger, A. ; Grzyb, J. ; Griffin, E. ; Andricos, C.
Author_Institution :
ITT Gallium Arsenide Technol. Center, Roanoke, VA, USA
Abstract :
A monolithic microwave and digital integrated circuit (MMDIC) consisting of a 12-b serial-to-parallel converter, 6-b phase shifter, 4-b attenuator, and a single-pole double-throw (SPDT) switch has been designed and fabricated using the standard multifunction self-aligned gate (MSAG) process, with a full functional yield of over 27%. By combining digital circuitry with these microwave control circuits, the number of control lines is reduced from 16 to 3. The on-chip combination of multiple circuit functions, including both digital and microwave, not only simplifies the bonding connections, but also reduces the subsystem cost, and increases its reliability.<>
Keywords :
MMIC; attenuators; code convertors; digital integrated circuits; phase shifters; switching circuits; MSAG process; SPDT switch; T/R switch; attenuator; combined monolithic microwave/digital IC; digital circuitry; microwave control circuits; multifunction self aligned gate process; multiple circuit functions; phase shifter; serial-to-parallel converter; single-pole double-throw; Attenuators; Bonding; Digital control; Digital integrated circuits; Integrated circuit yield; Microwave circuits; Phase shifters; Switches; Switching circuits; Switching converters;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1991. Digest of Papers, IEEE 1991
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-0087-4
DOI :
10.1109/MCS.1991.148083
