Ultra wide band saw resonator composed of grooved Cu electrodes and its application to tunable filters

Michio Kadota, Tetsuya Kimura, Yasuyuki Ida

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A cognitive radio system, which is researched to use a limited frequency resource effectively, requires a tunable filter with a wide variable frequency range. A resonator with wide band is required to realize the tunable filter. It was reported that a resonator composed of a Cu-electrode/15°YX-LiNbO 3 had wide bandwidth of 12%. This time, authors attempted to fabricate an one-port resonator composed of a grooved Cu-electrode/4°YX- LiNbO3. As the result, it had a wider bandwidth of 17% of 1.3 times than that on Cu electrode/4°YX-LiNbO3 This resonator was applied to a tunable filter, and as the results, the tunable filter having tunable range of 6.8% in center frequency was experimentally realized using a band pass filter type circuit, and those having tunable range of 9 to 12% theoretically using a ladder type circuit.

Original languageEnglish
Pages (from-to)1108-1114
Number of pages7
JournalIEEJ Transactions on Electronics, Information and Systems
Volume131
Issue number6
DOIs
Publication statusPublished - 2011

Keywords

  • Grooved Cu-electrode
  • LiNbO3
  • Tunable filter
  • Ultra wide band resonator

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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