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Ferroelectric Films

#2896


Planar Layered Structures Based on Ferroelectric Films Intended for Applications in Radioelectronic Tunable Devices of Millimeter Wavelength Band

Tech Area / Field

  • INF-ELE/Microelectronics and Optoelectronics/Information and Communications
  • INF-SIG/Sensors and Signal Processing/Information and Communications
  • PHY-RAW/Radiofrequency Waves/Physics
  • PHY-SSP/Solid State Physics/Physics

Status
8 Project completed

Registration date
01.10.2003

Completion date
14.07.2008

Senior Project Manager
Mitina L M

Leading Institute
St Petersburg Electrotechnical University, Russia, St Petersburg

Supporting institutes

  • Holding Company "Leninetz", Russia, St Petersburg

Collaborators

  • University of Oulu / Microelectronics and Materials Physics Laboratories, Finland, Oulu\nUniversity of Birmingham / School of Physics and Astronomy, UK, Birmingham\nKorea Institute of Science and Technology, Korea, Seoul\nInstitut fur Kristallzuchtung, Germany, Berlin

Project summary

The Project objective consists in development and fabrication of tunable microwave (MW) devices based on ferroelectric film (FEF) waveguide structures. It is achieved in the process of FEF technology improvement, using of complex analytical diagnostics, full-wave electrodynamic modeling and computational analysis, fabrication of original microwave waveguide transmission lines, comparison of simulation results with experimental investigations of microwave topologies. Main Project activity is associated with development of MW devices of millimeter wavelength band (higher 30 GHz), its fabrication and tests in working regimes.

Modern mobile anti-collision apparatus, telecommunication, navigation and radar systems need miniature electronically steerable antenna (ESA) for wavelength region (10-3) mm, which would possess high reliability in a combination to low cost in mass production. A basic electronic component of ESA is a phase shifter; therefore the circuit and technology of this component determine antenna’s parameters, overall dimensions and a cost. At present phase shifters are produced on ferrites, semiconductor diodes and GaAs transistors. These components demand hybrid technology and discrete surface montage, of components that defines significant dimensions and a high price for whole system.

Microwave phase shifter can be fabricated as FEF waveguide planar structure of surface electromagnetic waves. Ferroelectric BaxSr1-xTiO3 (BSTO) films are most appropriate material for creation of microwave original devices having such advantages as high speed and accuracy of signal processing; microelectronic integrated technology, significant lowering of dimensions and cost in comparison with traditional analogues. Novel "multislot transmission line" formed on BSTO layered structure is improved in the Project. Basing on full-wave electrodynamic model the original specialized CAD (computer aided design) is developed for simulation of MW devices in mm-wavelength band. The original designs of FEF waveguide structures for receiving and generator blocks are developed and realized in the laboratories of ETU LETI and HC “Leninetz”.

Project significance is determined by following main results that should be achieved as a result of project implementation: After Project accomplishment the following will be created:

(a) original full-wave model and specialized CAD as a constructive basis for development of various tunable microwave devices using FEF controlled multislot resonator and waveguide elements in mm – wavelength range;


(b) reliable technology of waveguide layered structures including ferroelectric films that could be applicable in mass microelectronic manufacture of tunable microwave devices;
(c) radioelectronic device models – phase shifter, electronically steerable antenna for mm-wavelength band and tunable band-pass filter, which allow to prepare industrial manufacture of principally novel completive devices for anti-collision and safety systems, positioning stations, stationary, mobile and satellite telecommunication, radar and navigation systems.


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