Title :
Coplanar 94 GHz Metamorphic HEMT Low Noise Amplifiers
Author :
Kärkkäinen, Mikko ; Varonen, Mikko ; Halonen, Kari A I ; Weber, Rainer ; Leuther, Arnulf ; Seelmann-Eggebert, Matthias ; Kantanen, Mikko ; Karttaavi, Timo ; Narhi, Tapani
Author_Institution :
Millimetre Wave Lab. of Finland, Helsinki Univ. of Technol., Espoo
Abstract :
We report four low noise amplifiers for a 94 GHz cloud profiling radar. The LNAs are designed using coplanar waveguides and they were manufactured with a 100-nm metamorphic high electron mobility transistor technology. The chip sizes are 2.00 times 1.00 mm2 and 2.25 times 1.00 mm2. The gate width of the transistor is 4times15 mum. The scattering parameters and the noise figures of the amplifiers were measured at W-band and the results are presented. The measured gain at 94 GHz was 17-23 dB and the measured noise figure 3.0-3.3 dB using a 0.8 V drain-to-source voltage and a drain current of 8-16 mA per stage
Keywords :
HEMT integrated circuits; MMIC amplifiers; S-parameters; atmospheric measuring apparatus; coplanar waveguides; low noise amplifiers; meteorological radar; 0.8 V; 100 nm; 15 micron; 17 to 23 dB; 3 to 3.3 dB; 4 micron; 8 to 16 mA; 94 GHz; MMIC amplifiers; cloud profiling radar; coplanar metamorphic HEMT low noise amplifiers; coplanar waveguides; metamorphic high electron mobility transistor; noise figures; scattering parameters; Clouds; Coplanar waveguides; Current measurement; Gain measurement; Low-noise amplifiers; Manufacturing; Noise figure; Noise measurement; Radar; mHEMTs; Low-noise amplifiers; MMIC amplifiers;
Conference_Titel :
Compound Semiconductor Integrated Circuit Symposium, 2006. CSIC 2006. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
1-4244-0126-7
Electronic_ISBN :
1-4244-0127-5
DOI :
10.1109/CSICS.2006.319911
