The development of compact broadband fixed-tuned receivers at millimeter and submillimeter wavelengths is discussed. These components rely on a fusion between novel integrated planar diode technology and innovative broadband circuit topologies. A 500 GHz InGaAs subharmonic mixer has been demonstrated that has the same sensitivity as a GaAs mixer (T/sub MIX//spl sim/1500 K (DSB)) while using less than half the LO power. In addition, an integrated tripler-mixer has been developed at 180 GHz that exhibits state-of-the-art sensitivity (T/sub MIX//spl sim/550 K (DSB)) using 125 mW of LO power at 30 GHz. The ultimate goal of this research is to develop a compact, highly sensitive radiometer at 874 GHz to meet upcoming critical NASA Earth Science requirements.


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    Title :

    Development of compact broadband receivers at submillimeter wavelengths


    Contributors:
    Hesler, J.L. (author) / Porterfield, D.W. (author) / Bishop, W.L. (author) / Crowe, T.W. (author) / Racette, P. (author)


    Publication date :

    2004-01-01


    Size :

    441777 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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