A 1.6-GHz surface acoustic wave (SAW) timing tank for a self-timed regenerative repeater for an ultrahigh-speed PCM optical fiber transmission system is described. A SAW narrow bandpass filter with 0.74-microm linewidth interdigital transducers with double electrode geometry and 20-nm aluminum metallization on AT-quartz substrate is realized by conventional optical photolithography. Typical performance obtained is as follows: center frequency is 1.5993 GHz; insertion loss is 22 dB; stopband attenuation is above 23 dB with respect to the passband. It is demonstrated that SAW quartz transversal filters can be made into new practical filters which have both high Q value and high stability in the GHz range and are satisfactory from the standpoints of precise design, fabrication technique, and performance.


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    Titel :

    SAW bandpass filter design for 1.6-GHz PCM timing tank applications


    Weitere Titelangaben:

    Entwurf von Oberflaechenwellenfiltern bei 1,6 GHz fuer PCM-Zeitsteuerungen


    Beteiligte:
    Temmyo, J. (Autor:in) / Yoshikawa, S. (Autor:in)


    Erscheinungsdatum :

    1980


    Format / Umfang :

    6 Seiten, 11 Bilder, 1 Tabelle, 15 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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