Title :
A W-band monolithic HEMT receiver for passive millimeter-wave imaging system
Author :
Huang, Chun-Yen ; Li, Chen-Ming ; Chang, Li-Yuan ; Nien, Chin-Chung ; Yu, Ya-Chung ; Tarng, Jenn-Hwan
Author_Institution :
Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
A W-band monolithic direct conversion receiver for passive millimeter wave imaging system using commercial 0.15 μm GaAs pHEMT technology has been realized. The receiver module consists of a two-stage preamplifier, a zero bias detector and an low pass filter. The input return loss S11 over W-band was measured, and the estimated noise equivalent power (NEP) of the detector showed the value of 7.8 pW/√Hz. The measured responsivities of the proposed receiver showed the peak value of 1.31 kV/W and average value of 1.16 kV/W respectively. A low pass filter with preselected bandwidth of 2 GHz is integrated into the proposed chip to stable the output, and the receiver chip occupies the area of 2.26 × 0.68 mm2 excluding test pads.
Keywords :
III-V semiconductors; gallium arsenide; high electron mobility transistors; low-pass filters; millimetre wave imaging; preamplifiers; GaAs; GaAs pHEMT technology; NEP; W-band monolithic HEMT receiver; bandwidth 2 GHz; low pass filter; monolithic direct conversion receiver; noise equivalent power; passive millimeter-wave imaging system; size 0.15 micron; two-stage preamplifier; zero bias detector; Detectors; Imaging; Low pass filters; Millimeter wave technology; Noise; PHEMTs; Receivers; HEMT; MMIC; W-band; millimeter wave; radiometer;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
