Tuneable Electromagnetic Bandgap structures based on Ba/sub 0.25/Sr/sub 0.75/TiO/sub 3/ parallel-plate varactors on silicon Coplanar Waveguides
Paper i proceeding, 2003

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

ferroelectric devices

barium compounds

ferroelectric materials

microwave propagation

varactors

ferroelectric thin films

strontium compounds

coplanar waveguides

silicon

Q-factor

Författare

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 1111-14

Ämneskategorier

Elektroteknik och elektronik

ISBN

1580538347