John Berge

Showing 23 publications

2011

Tunable bulk acoustic wave resonators based on Ba0.25Sr0.75TiO3 thin films and a HfO2/SiO2 Bragg reflector

John Berge, Spartak Gevorgian
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Vol. 58 (12), p. 2768-2771
Journal article
2011

Effect of interface roughness on acoustic loss in tunable thin film bulk acoustic wave resonators

Andrei Vorobiev, John Berge, Spartak Gevorgian et al
Journal of Applied Physics. Vol. 110 (2)
Journal article
2010

Silicon substrate integration of BST based tunable TFBARs using all-dielectric SiO2/AlN Bragg reflectors

Andrei Vorobiev, John Berge, Martin Norling et al
2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers, p. 41-44
Paper in proceedings
2010

Design considerations for tunable bulk acoustic wave resonators based on paraelectric phase BaxSr1-xTiO3 thin films

John Berge, Andrei Vorobiev, Spartak Gevorgian
19th International Symposium on the Applications of Ferroelectrics
Conference poster
2010

The effect of Bragg reflectors on the electromechanical performance of parallel-plate ferroelectric capacitors

John Berge, Martin Norling, Andrei Vorobiev et al
IOP Conference Series: Materials Science and Engineering - Fundamentals and Technology of Multifunctional Oxide Thin Films (Symposium G, EMRS 2009 Spring Meeting) 8–12 June 2009, Strasbourg, France. Vol. 8 (1), p. 012011-
Paper in proceedings
2009

A voltage controlled switching device

Spartak Gevorgian, T Lewin, Andrei Vorobiev et al
Patent application
2009

Parameter extraction for tunable TFBARs based on BaxSr1-xTiO3

Martin Norling, John Berge, Spartak Gevorgian
IEEE IMS’2009 Dig., 2009, p. p101-104
Paper in proceedings
2008

Field and temperature dependent parameters of the dc field induced resonances in BaxSr1-xTiO3-based tunable thin film bulk acoustic resonators

John Berge, Martin Norling, Andrei Vorobiev et al
Journal of Applied Physics. Vol. 103 (6), p. 064508-
Journal article
2008

Electrically tunable bulk acoustic filters with induced piezoelectric effect in BSTO film

Pavel Turalchuk, Irina Vendik, Orest Vendik et al
38th European Microwave Conference, EuMC 2008; Amsterdam; Netherlands; 27 October 2008 through 31 October 2008, p. 1695-1698
Paper in proceedings
2008

Modeling tunable bulk acoustic resonators based on induced piezoelectric effect in BaTiO[sub 3] and Ba[sub 0.25]Sr[sub 0.75]TiO[sub 3] films

Irina Vendik, Pavel Turalchuk, Orest Vendik et al
Journal of Applied Physics. Vol. 103 (1), p. 014107-1-6-
Journal article
2008

Comparative study of microstructure and microwave dielectric response of BaxSr1-xTiO3 films grown by pulsed laser deposition and magnetron sputtering

Andrei Vorobiev, John Berge, Spartak Gevorgian
Electroceramics XI, 31 August - 3 September 2008, Manchester, UK
Paper in proceedings
2007

The effect of growth temperature on the nanostructure and dielectric response of BaTiO3 ferroelectric films

John Berge, Andrei Vorobiev, Spartak Gevorgian
Thin Solid Films. Vol. 515 (16), p. 6302-6308
Journal article
2007

Thin film Ba0.25Sr0.75TiO3 voltage tunable capacitors on fused silica substrates for applications in microwave microelectronics

Andrei Vorobiev, John Berge, Spartak Gevorgian
Thin Solid Films. Vol. 515 (16), p. 6606-6610
Journal article
2007

Tunable Solidly Mounted Thin Film Bulk Acoustic Resonators Based on BaxSr1-xTiO3 Films

John Berge, Andrei Vorobiev, William Steichen et al
IEEE Microwave and Wireless Components Letters. Vol. 17 (9), p. 655-657
Journal article
2006

The effect of growth temperature on the nanostructure and dielectric response of Ba0.75Sr0.25TiO3 ferroelectric films

John Berge, Andrei Vorobiev, Spartak Gevorgian
E-MRS IUMRS ICEM 2006, May 29 to June 2. Symposium J: Synthesis, Processing, and Characterization of Nanoscale Functional Oxide Films. Acropolis Congress Center, Nice, France.
Paper in proceedings
2006

Electromechanical modelling and reduction of the electroacoustic losses in parallel-plate ferroelectric varactors

Spartak Gevorgian, Andrei Vorobiev, John Berge
EuMC, Manchester, UK, 10-15 September, 2006.
Paper in proceedings
2006

The effect of interfacial transition layer on performance of thin film ferroelectric capacitors

Andrei Vorobiev, John Berge, Spartak Gevorgian
Electroceramics X, International Conference on Electroceramics, Toledo, Spain, 18-22 June, 2006
Paper in proceedings
2006

Performance Problems: Do they Hinder the Wide Scale Applications of the Ferroelectrically Tuneable Microwave Devices

Spartak Gevorgian, Andrei Vorobiev, John Berge
EuMC2006 Workshop on Nanostructured ferroelectric films for tuneable microwave and related applications
Paper in proceedings
2006

Thin film Ba0.25Sr0.75TiO3 varactors on Au bottom electrode for microwave applications

Andrei Vorobiev, John Berge, Spartak Gevorgian
EuMC, Manchester, UK, 10-15 September, 2006.
Paper in proceedings
2006

Thin film Ba0.25Sr0.75TiO3 voltage tuneable capacitors on fused silica substrates for applications in microwave microelectronics

Andrei Vorobiev, John Berge, Spartak Gevorgian
E-MRS IUMRS ICEM 2006, May 29 to June 2. Symposium J: Synthesis, Processing, and Characterization of Nanoscale Functional Oxide Films Acropolis Congress Centre, Nice, France.
Paper in proceedings
2006

Microwave performance of varactors based on nanostructured BSTO films

Andrei Vorobiev, John Berge, Spartak Gevorgian
WS7 (EuMC-2006) Nanostructure Ferroelectric Films for Tuneable Microwave and Related Components, G-Mex/MICC Exhibition & International Conference Centre, Manchester UK
Paper in proceedings

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