A novel integrable surface acoustic wave notch filter

I. Tseng Tang, Han Jan Chen, Mau Phon Houng, Yeong Her Wang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Although surface acoustic wave (SAW) notch filter was investigated in the past, the structures of these devices often needed the extra lumped-element such as resistance R, capacitance C, and inductance L so that the devices are complex and integrated hardly. From this, we offer a simple kind of the planar structure to the novel SAW notch filters that have smaller size and can be fabricated easily. We adopt the SAW and the interdigital transducer's (IDT's) theory to fabricate the SAW notch filter. In this paper, we use an IDT finger width 8 μm with conventional photolithography process, lift-off technique, and IDT electrode to fabricate on 128° rotated YX-cut lithium niobate (LiNbO3). Finally, we get the frequency responses of the novel SAW notch filter with the center frequency 113.4 MHz, the 3 dB bandwidth 0.36%, and the insertion loss S21 = -10.583 dB.

Original languageEnglish
Pages (from-to)2063-2066
Number of pages4
JournalSolid-State Electronics
Volume47
Issue number11
DOIs
Publication statusPublished - 2003 Nov

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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