Title :
Ku-band MMIC upconverter for mobile satellite communications
Author :
Dunn, D.L. ; Bruckner, C.L.
Author_Institution :
Qualcomm. Inc., San Diego, CA, USA
Abstract :
A complete Ku-band MMIC (monolithic microwave IC) upconverter is developed for use in a high-volume commercial two-way mobile satellite communication system. Both FET and diode mixer topologies were explored. An output power of 20 dBm is achieved for the diode mixer topology, and 19 dBm is achieved for the FET mixer topology. Both achieved LO (local oscillator) rejection >25 dB and 2IF+LO rejection >20 dB. This single chip replaces 80 discrete components. The area occupied by the upconverter function has been reduced from 4700 mm/sup 2/ to 7.6 mm/sup 2/.<>
Keywords :
MMIC; frequency convertors; microwave links; mixers (circuits); mobile radio systems; satellite relay systems; FET mixer topology; Ku-band; MMIC upconverter; diode mixer topology; mobile satellite communications; monolithic microwave IC; Diodes; Local oscillators; MMICs; Microwave FET integrated circuits; Microwave FETs; Microwave integrated circuits; Monolithic integrated circuits; Power generation; Satellite communication; Topology;
Conference_Titel :
Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 1990. Technical Digest 1990., 12th Annual
Conference_Location :
New Orleans, LA, USA
DOI :
10.1109/GAAS.1990.175505
