Tunable electromagnetic bandgap performance of coplanar waveguides periodically loaded by ferroelectric varactors
✍ Scribed by D. Kuylenstierna; G. Subramanyam; A. Vorobiev; S. Gevorgian
- Book ID
- 102514880
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 207 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
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 SrTiO~3~ (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. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 81–86, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11134