MMIC applications to space equipment

Kazekami, Y. ; Hirose, H. ; Mitsui, Y. ; Takagi, T. (1998) MMIC applications to space equipment. In: Gallium Arsenide Applications Symposium. GAAS 1998, 5-6 October 1998, Amsterdam, The Netherlands.
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We demonstrated high power and low noise GaAs MMIC amplifiers for K- to Ka-band space equipment. For high power application, two different approaches were adopted. A SIV(Source Island Via-hole) FET high power amplifier achieved a saturation output power of 33 dBm with a power added efficiency of 26% at 21 GHz, which also provided an output power as high as 32 W when 16 chips of them were power-combined in an SSPA for an on-board transponder. On the other hand, a p-HEMT high power amplifier using lumped element matching circuits provided a P1dB of 31 dBm with a linear gain of 11.5 dB at 19 GHz. For low noise application, p-HEMT low noise amplifier delivered a super low noise Figure of 1.0 dB with an associated gain of 18 dB at 32 GHz. Gamma ray irradiation hardness of mm-wave MMIC LNAs was also investigated, up to 1E7 rad, which indicated that the p-HEMT MMIC LNA has sufficient gamma ray hardness in the space environment.

Document type
Conference or Workshop Item (Paper)
Kazekami, Y.
Hirose, H.
Mitsui, Y.
Takagi, T.
Deposit date
16 Feb 2006
Last modified
17 Feb 2016 14:35

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