Self resonant IDT as a grating reflector of surface acoustic waves

Self resonant IDT as a grating reflector of surface acoustic waves

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

An IDT, when resonantly loaded by a pure inductance, behaves as a perfect reflector of SAWs. It is shown that this ideal condition can be approached by using the self resonance of an IDT. The reflection coefficient of the self resonant IDT is calculated to be about 0.96 and is observed to be in the range 0.93 to 0.95. It is demonstrated that the frequency of self resonance at which the reflection peak and hence the transmission null occurs can be shifted by an external capacitor connected across the self resonant reflector IDT.


    1. 1)
      • W.R. Smith , H.M. Gerard , J.H. Collins , T.M. Reeder , H.J. Shaw . Analysis of interdigital surface wave transducers by use of an equivalent circuit model. IEEE Trans. , 856 - 864
    2. 2)
      • K.M. Lakin , T. Joseph , D. Penunuri . A surface acoustic wave planar resonator employing an interdigital electrode transducer. Appl. Phys. Lett. , 363 - 365
    3. 3)
      • Joshi , G. Shrinivas , P. Sudhakar . Scattering parameters of interdigital surface acoustic wave transducers. IEEE Trans. , 201 - 206
    4. 4)
      • H. Engan . Surface acoustic wave multielectrode transducers. IEEE Trans. , 395 - 401

Related content

This is a required field
Please enter a valid email address