Intrinsically switchable bulk acoustic wave resonators based on paraelectric films
Paper i proceeding, 2014

The concept of the frequency switching in the composite bulk acoustic wave (BAW) resonators based on the thin films of the paraelectric-phase ferroelectrics is demonstrated experimentally for the first time. The composite BAW resonators based on the Ba 0.25 Sr 0.75 TiO 3 /SrRuO 3 /Ba 0.25 Sr 0.75 TiO 3 multilayer structure are fabricated and characterized. It is shown that the resonance frequency of the BAW resonators can be switched more than two times (from 3.6 GHz to 7.7 GHz) by changing polarity of the 5 V dc bias voltage at the one of the ferroelectric layers. The composite BAW resonators performance is analyzed using the theory of the dc field induced piezoelectric effect in the paraelectric-phase ferroelectrics.

film bulk acoustic resonators

ferroelectric films

frequency control

tunable circuits and devices

Författare

Andrei Vorobiev

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Spartak Gevorgian

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

2014 44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014, Rome, Italy, 6-9 October 2014

347-350

Ämneskategorier

Kommunikationssystem

DOI

10.1109/EuMC.2014.6986441

ISBN

978-287487035-4