This paper presents the design, fabrication, and performance of a 77 GHz monolithic GaAs PIN switch network developed for an automotive collision warning radar. The RF front end of the radar contains three control circuits which were initially realized by a hybrid approach using a duroid circuit and beam lead diodes. These three circuits were successfully integrated into a single 77 GHz MMIC. The MMIC uses vertical GaAs PIN diodes with a switching cutoff frequency of over 3000 GHz, attaining low insertion loss and high isolation. Insertion loss is comparable to that obtained with a hybrid circuit, while the isolation improved from a typical level of 16 dB for a single hybrid switch to over 25 dB in the MMIC. The use of GaAs PIN diodes also allowed switching speeds of less than 2 ns to be attained, a key requirement for the radar.


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    Title :

    A monolithic GaAs PIN switch network for a 77 GHz automotive collision warning radar


    Contributors:
    Putnam, J. (author) / Barter, M. (author) / Wood, K. (author) / LeBlanc, J. (author)


    Publication date :

    1997


    Size :

    4 Seiten, 1 Quelle




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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