A multi-IDT input tunable surface acoustic wave filter

Jiahua Zhu, Nuri W. Emanetoglu, Yicheng Lu, John A. Kosinski, Robert A. Pastore

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Tunable surface acoustic wave (SAW) filters (TSF) have been widely used in the wireless telecommunication systems. A prototype of a multi-IDT (interdigital transducer) input TSF has been developed. The device consists of 11 IDT paralleled in the SAW propagation path. Different SAW filter configurations are realized by selecting or combining various IDTs, resulting in the tunability of both center frequency and 3 dB bandwidth. The center frequencies of the SAW filter range from 126.8 to 199.1 MHz; the 3 dB bandwidths range from 15.2 to 58.9 MHz. Impedance weighting methods have been applied. The passband ripple has been reduced from 6.44 to 1.37 dB after resistance weighting.

Original languageEnglish (US)
Pages (from-to)1383-1388
Number of pages6
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume48
Issue number5
DOIs
StatePublished - Sep 2001

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

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