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Tuneable Electromagnetic Bandgap structures based on Ba/sub 0.25/Sr/sub 0.75/TiO/sub 3/ parallel-plate varactors on silicon Coplanar Waveguides

Dan Kuylenstierna (Institutionen för mikroelektronik och nanovetenskap) ; Andrei Vorobiev (Institutionen för mikroelektronik och nanovetenskap) ; G. Subramanyam ; Spartak Gevorgian (Institutionen för mikroelektronik och nanovetenskap)
33rd European Microwave Conference Proceedings, 7-9 Oct. 2003 Vol. Vol.3 (2003), p. 1111-14.
[Konferensbidrag, refereegranskat]

Experimental performance of Electromagnetic Band Gap (EBG) structures, based on Coplanar Waveguides (CPW) periodically loaded by high-Q-factor ferroelectric varactors is reported. The varactors are made of Ba/sub 0.25/Sr/sub 0.75/TiO/sub 3/ films grown by laser ablation on thick Pt/Au/Pt electrodes. Due to the thick bottom electrodes the varactors have Q-factor larger than 40 at 45 GHz, which is higher in comparison with semiconductor varactors. Up to 30% tuning of the pass band edge is achieved at -20 dB level under 25V DC bias

Nyckelord: barium compounds, coplanar waveguides, ferroelectric devices, ferroelectric materials, ferroelectric thin films, microwave propagation, Q-factor, silicon, strontium compounds, varactors



Denna post skapades 2006-08-29. Senast ändrad 2014-09-02.
CPL Pubid: 11840

 

Institutioner (Chalmers)

Institutionen för mikroelektronik och nanovetenskap (1900-2003)

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur