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Research project

B Hayden - Lead Niobate-based Tunable Dielectrics

Project overview

BaxSr1-xTiyMn1-yO3 BSTO thin films have been synthesized using a molecular beam epitaxy system. Novel coplanar waveguide tunable phase shifters have been developed using these Mn-doped perovskite films. The presented phase shifters operate with a phase shift angle of 12 degrees at 10GHz. at an applied bias of 10V on an area smaller than 1mm2. Insertion loss of ~3.2 dB is extracted from the S-parameter measurement. Small changes of composition lead to a significant variation of device phase shift, demonstrating the importance of synthesizing suitable structure BSTO film.

Staff

Lead researcher

Emeritus Professor Brian Hayden

Other researchers

Professor Kees De Groot

Professor

Research interests

  • Radio-Frequency and Microwave Devices
  • 2 dimensional Transition Metal Dichalcogenides  Transistors
  • Smart Radiative Cooling and RF control of smart glass using metal oxides such as Al-doped ZnO and W-doped VO2

Collaborating research institutes, centres and groups

Electrochemistry

A well-established world-class group researching energy charge transfer that affects many facets of life.

Sustainable Electronic Technologies

We explore how to improve renewable energy sources and create more efficient electronic device technology to benefit the environment.

Research outputs

Origin of improved tunability and loss in N2 annealed barium strontium titanate films
Ali Mostaed,
Ioanna Bakaimi,
Brian Hayden,
Derek C. Sinclair,
& Ian M. Reaney
, 2020 , Physical Review Materials , 4 (9)
DOI: 10.1103/PhysRevMaterials.4.094410
Type: article
Multibeam dual-circularly polarized reflectarray for connected and autonomous vehicles
Qi Luo,
Steven Gao,
Wenting Li,
Mohammed Sobhy,
Ioanna Bakaimi,
C. H.Kees De Groot,
Brian Hayden,
Ian Reaney,
& Xuexia Yang
, 2019 , IEEE Transactions on Vehicular Technology , 68 (4) , 3574--3585
DOI: 10.1109/TVT.2019.2897218
Type: article
(Ba, Sr)(Ti, Mn)O3 perovskite films for co-planar waveguide tunable microwave phase shifters
Xingli He,
Ioanna Bakaimi,
Nur Zatil Ismah Hashim,
Yudong Wang,
Ali Mostaed,
Ian M. Reaney,
Qi Luo,
Steven Gao,
Brian E. Hayden,
& C. H. Kees De Groot
, 2018
DOI: 10.23919/EuMIC.2018.8539889
Type: conference
Combinatorial synthesis and screening of (Ba,Sr)(Ti,Mn)O3 thin films for optimization of tunable co-planar waveguides
Ioanna Bakaimi,
Xingli He,
Samuel Guerin,
Nur Hashim,
Qi Luo,
Ian M. Reaney,
Steven Gao,
Brian Hayden,
& Cornelis De Groot
, 2018 , Journal of Materials Chemistry C , 2018 (6) , 6222--6228
DOI: 10.1039/C8TC01396A
Type: article
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