Unidirectional dispersive transducers and applications to efficient elastic convolver

K. Yamanouchi, E. Gonda, K. Morozumi, S. Takahashi, Shuuzou Kato

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Elastic convolvers are very important for signal-processing devices of the spread spectrum communication systems. We have already fabricated a dispersive IDT with down-chirp directivity on the Y cut-Z propagation LiNbO 3 and we fabricated a convolver using this IDT and dispersive split IDT with bi-directionality. An dispersive electrode IDT with an up-chirp directivity has not been obtained. We now propose a dispersive split IDT with an up-chirp directivity using Al/Cr bimetal electrode on Y-Z LiNbO 3 substrate. We have successfully fabricated the required IDT using an electro-chemical effect. Furthermore, we also obtained the elastic convolver using this IDT with a high efficiency -56.5 dBm and low-insertion loss of 11.9 dB at a center frequency of 200 MHz.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalProceedings of the Annual IEEE International Frequency Control Symposium
Publication statusPublished - 1996 Dec 1
EventProceedings of the 1996 50th IEEE International Frequency Control Symposium - Honolulu, HI, USA
Duration: 1996 Jun 51996 Jun 7

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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