Title :
GaAs MMIC slotline/CPW quadrature IF upconverter
Author :
Lewis, G.K. ; Bahl, I.J. ; Geissberger, A.E. ; Schineller, E.R.
Author_Institution :
ITT, Roanoke, VA, USA
Abstract :
A GaAs monolithic slotline/coplanar waveguide (SL/CPW) quadrature intermediate-frequency (IF) upconverter integrated circuit (IC) is described. The IC is a single-sideband suppressed carrier upconverter and consists of local oscillator (LO) and RF power splitters, two IF/RF diplexers, and two SL/CPW single balanced mixers. The IC has circuitry on both sides of the chip which required a few additional processing steps to fabricate. With a 7.0-GHz LO, and a 1-MHz to 1000-MHz quadrature IF input signal, the typical upconverter performance was 40-dB LO port-to-RF port isolation, 25-dB carrier suppression, 20-dB sideband suppression, and 14-dB conversion loss in the 6-8-GHz RF output band.<>
Keywords :
III-V semiconductors; field effect integrated circuits; frequency convertors; gallium arsenide; microwave integrated circuits; waveguide components; 14 dB; 6 to 8 GHz; GaAs; LO port-to-RF port isolation; MMIC slotline/CPW quadrature IF upconverter; RF output band; RF power splitters; carrier suppression; conversion loss; diplexers; local oscillator input; monolithic slotline/coplanar waveguide upconverter; sideband suppression; single balanced mixers; single-sideband suppressed carrier upconverter; Coplanar waveguides; Gallium arsenide; Local oscillators; MMICs; Monolithic integrated circuits; Performance loss; RF signals; Radio frequency; Radiofrequency integrated circuits; Slotline;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1988. Digest of Papers., IEEE 1988
Conference_Location :
New York, NY, USA
DOI :
10.1109/MCS.1988.197287
