Title :
W-band cascode amplifier modules for passive imaging applications
Author :
Tessmann, A. ; Haydl, W.H. ; Neumann, M. ; Rudiger, J.
Author_Institution :
Fraunhofer Inst. for Appl. Solid State Phys., Germany
fDate :
5/1/2000 12:00:00 AM
Abstract :
W-band amplifier modules with high gain and large bandwidth have been developed for passive imaging applications, With three cascaded waveguide modules, an average small-signal gain of 60 dB and a /spl plusmn/3 dB bandwidth of 15 GHz was achieved centered around 93 GHz. The assembled three-stage amplifier monolithic microwave integrated circuits are realized in coplanar technology for compact size and low cost. Cascode devices, based on a 0.15 μm AlGaAs/lnGaAs/GaAs pseudomorphic high electron mobility transistor technology allow for individual gain control of the stages by varying the second gate voltage.
Keywords :
HEMT integrated circuits; III-V semiconductors; MMIC amplifiers; aluminium compounds; cascade networks; coplanar waveguides; field effect MIMIC; gallium arsenide; indium compounds; millimetre wave amplifiers; 0.15 micron; 15 GHz; 60 dB; 94 GHz; AlGaAs-InGaAs-GaAs; III-V semiconductors; W-band; average small-signal gain; cascaded waveguide modules; cascode amplifier modules; coplanar technology; gain control; gate voltage; mm-wave amplifiers; monolithic microwave integrated circuits; passive imaging applications; pseudomorphic high electron mobility transistor technology; Assembly; Bandwidth; Gain; Integrated circuit technology; MMICs; Microwave amplifiers; Microwave devices; Microwave imaging; Microwave integrated circuits; Monolithic integrated circuits;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
