Tunable electromagnetic bandgap performance of coplanar waveguides periodically loaded by ferroelectric varactors
Artikel i vetenskaplig tidskrift, 2003

To achieve tunable electromagnetic bandgap (EBG) performance, ferroelectric varactors are considered, in LC circuits, for periodically loading coplanar waveguides (CPWs). Asymmetric or symmetric tuning of the bandgap width may be achieved by changing the capacitance of the varactors in the LC circuits. To validate this concept, tunable EBG arrays based on silicon substrate CPWs, including thin film SrTiO3 (STO) varactors, are fabricated and tested experimentally. The EBGs are designed so that the first band gap starts between 20 and 30 GHz. Up to 10% tuning is achieved, under 20-V DC applied bias, in the EBG structures.

Substrates

Waveguides

Varactors

Ferroelectric materials

Semiconducting silicon

Tuning

Energy gap

Electric fields

Permittivity

Thin films

Capacitance

Författare

Dan Kuylenstierna

Institutionen för mikroelektronik och nanovetenskap

G. Subramanyam

University of Dayton

Andrei Vorobiev

Institutionen för mikroelektronik och nanovetenskap

Spartak Gevorgian

Institutionen för mikroelektronik och nanovetenskap

Microwave and Optical Technology Letters

0895-2477 (ISSN) 1098-2760 (eISSN)

Vol. 39 2 81-86

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1002/mop.11134