Title :
Ultra small sized low noise block downconverter module
Author :
Sekiguchi, Takeshi ; Shiga, Nobuo ; Nakajima, Shigeru ; Otobe, Kenji ; Kuwata, Nobuhiro ; Matsuzaki, Ken-Ichiro ; Hayashi, Hideki
Author_Institution :
Sumitomo Electric Industries Ltd., Yokohama, Japan
Abstract :
A compact low-noise block (LNB) downconverter module in use in a direct broadcast satellite (DBS) utilizing only GaAs MMICs (monolithic microwave integrated circuits) has been successfully demonstrated. Four kinds of MMICs designed with 0.5- mu m-gate pulse-doped MESFETs were assembled in a miniaturized flat package (25.4*17.8*6.0 mm/sup 3/). 52-dB conversion gain and 2.1 dB noise figure were obtained using no discrete HEMTs (high electron mobility transistors) in the preceding stage and no stubtuning.<>
Keywords :
MMIC; Schottky gate field effect transistors; direct broadcasting by satellite; frequency convertors; microwave amplifiers; modules; 0.5 micron; 2.1 dB; 52 dB; GaAs; MMICs; conversion gain; direct broadcast satellite; downconverter module; low noise block; miniaturized flat package; noise figure; pulse-doped MESFETs; Assembly; Gallium arsenide; HEMTs; Integrated circuit noise; MESFETs; MMICs; MODFETs; Microwave integrated circuits; Monolithic integrated circuits; Satellite broadcasting;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188009
