A strain engineered voltage tunable millimeter-wave ferrite phase shifter

A 50‐GHz electric field tunable ferrite‐piezoelectric phase shifter based on a bilayer of single crystal M‐type hexagonal barium ferrite (BaM) and lead zirconate titanate (PZT) is discussed.A dc voltage applied to PZT results in a piezoelectric strain that manifests as an anisotropy field in BaM. A...

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Bibliographic Details
Published in:Microwave and optical technology letters 2011-02, Vol.53 (2), p.261-264
Main Authors: Tatarenko, A. S., Srinivasan, G.
Format: Article
Language:English
Subjects:
Anisotropy
Barium compounds
Electric potential
ferrite
Lead zirconate titanates
magnetoelectric
Microwaves
Phase shift
phase shifter
piezoelectric
Strain
Voltage
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Summary:A 50‐GHz electric field tunable ferrite‐piezoelectric phase shifter based on a bilayer of single crystal M‐type hexagonal barium ferrite (BaM) and lead zirconate titanate (PZT) is discussed.A dc voltage applied to PZT results in a piezoelectric strain that manifests as an anisotropy field in BaM. A change in the voltage applied to PZT gives rise to variations in the anisotropy field and permeability of BaM and, therefore, a differential phase shift. A phase shift of 45° is measured when the voltage is increased from 0 to 400 V across a 0.5‐mm thick PZT. Theoretical estimates of the phase shift are in agreement with the data. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:261–264, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25725
ISSN:0895-2477
1098-2760
1098-2760
DOI:10.1002/mop.25725