Low-loss low-ripple SAW filters using three bidirectional centrosymmetric transducers

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Low-loss low-ripple SAW filters using three bidirectional centrosymmetric transducers

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© The Institution of Electrical Engineers
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Low-loss, low-ripple and high out-of-band rejection SAW filters have been constructed using a three transducer configuration with symmetric/antisymmetric end transducers. The filter on 128°-cut LiNbO3 has an insertion loss of 5.2 dB, a passband ripple of 0.3 dB (peak to peak) and an out-of-band rejection of 55 dB.

Inspec keywords: transducers; surface acoustic wave devices; filters

Other keywords: LiNbO3; bidirectional centrosymmetric transducers; low-loss low-ripple SAW filters; insertion loss; passband ripple

Subjects: Transduction; devices for the generation and reproduction of sound; Acoustic wave devices

References

    1. 1)
      • R.I. Murray , R.C. Peach , S. Neylon . True quadrature taps for SAW delay lines. Electron. Lett. , 631 - 632
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19820276
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