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Author

  • Constantinos Valagiannopoulos
2011

Analytical model for coupling of waves between a homogeneous medium and a volumetric transmission-line network

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S. A., Nov 1 2011, 2011 IEEE International Symposium on Antennas and Propagation - Proceedings. p. 2597-2600 4 p. 5997056. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Conversion of evanescent waves into propagating modes by passing through a metamaterial prism: An iterative approximation method

Valagiannopoulos, C. A. & Simovski, C. R., Jul 1 2011, Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. p. 95-99 5 p. 5782599. (Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Electromagnetic propagation into parallel-plate waveguide in the presence of a skew metallic surface

Valagiannopoulos, C. A., Nov 2 2011, In : Electromagnetics. 31, 8, p. 593-605 13 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)
Open Access
36 Citations (Scopus)
23 Citations (Scopus)

On adjusting the characteristics of a low-index slab antenna with a finite set of metallic pins

Valagiannopoulos, C. A., Jul 1 2011, Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. p. 913-917 5 p. 5782588. (Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Simple cloak for antenna blockage reduction

Alitalo, P., Valagiannopoulos, C. A. & Tretyakov, S. A., Nov 1 2011, 2011 IEEE International Symposium on Antennas and Propagation - Proceedings. p. 669-672 4 p. 5996800. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)
6 Citations (Scopus)
2012

A Cartesian cloaking comprised of gradually sparser dielectric layers exploiting Snell's law

Valagiannopoulos, C. A., Jul 2 2012, Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. p. 2688-2692 5 p. 6206412. (Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

An iterative semi-analytical technique solving the boundary value problem of transmission through an anisotropic wedge

Valagiannopoulos, C. A. & Simovski, C. R., Dec 26 2012, In : Radio Science. 47, 6, RS6004.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Cloaking a microstrip antenna: Integral equation modeling

Valagiannopoulos, C. A. & Tsitsas, N. L., Nov 7 2012, Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12. p. 383-386 4 p. 6328654. (Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Concentrating the electromagnetic power in a grounded dielectric slab excited by an external Gaussian beam

Tsitsas, N. L. & Valagiannopoulos, C. A., Dec 14 2012, Proceedings of the 14th International Conference on Mathematical Methods in Electromagnetic Theory, MMET 2012. p. 304-307 4 p. 6331251. (International Conference on Mathematical Methods in Electromagnetic Theory, MMET).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)
12 Citations (Scopus)

Demonstration of electromagnetic cloaking of conducting object by dielectric material cover

Alitalo, P. & Valagiannopoulos, C. A., Aug 16 2012, In : Electronics Letters. 48, 17, p. 1056-1057 2 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Dielectric-coated PEC cylinders which do not scatter electromagnetic waves

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S., Nov 7 2012, Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12. p. 90-91 2 p. 6328595. (Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Efficient evaluation of the Green's function for a bended coplanar waveguide

Valagiannopoulos, C. A., Jul 2 2012, Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. p. 2191-2195 5 p. 6206304. (Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Electromagnetic cloaking of PEC cylinders with a single isotropic and homogeneous layer

Valagiannopoulos, C. A. & Alitalo, P., Dec 10 2012, 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings. 6348712. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Field enhancement in a grounded dielectric slab by using a single superstrate layer

Valagiannopoulos, C. A. & Tsitsas, N. L., Dec 3 2012, In : Advances in OptoElectronics. 2012, 439147.

Research output: Contribution to journalArticle

7 Citations (Scopus)
3 Citations (Scopus)

Integral equation analysis of a low-profile receiving planar microstrip antenna with a cloaking superstrate

Valagiannopoulos, C. A. & Tsitsas, N. L., May 28 2012, In : Radio Science. 47, 2, RS2022.

Research output: Contribution to journalArticle

25 Citations (Scopus)
2 Citations (Scopus)
7 Citations (Scopus)

The influence of refractive index, excitation and observation on PEC/PMC boundary realization

Valagiannopoulos, C. A. & Sihvola, A. H., Dec 10 2012, 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings. 6348494. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
2013

A grating from coated PEC cylinders functioning as an electromagnetic absorber

Valagiannopoulos, C. A. & Tretyakov, S. A., Dec 1 2013, 2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013 - Proceedings. p. 1986-1987 2 p. 6711651. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
3 Citations (Scopus)

Approximating the mechanism of perfect electromagnetic boundaries by using magneto-dielectric materials

Valagiannopoulos, C. A. & Sihvola, A. H., Dec 2 2013, Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013. p. 1036-1039 4 p. 6632400. (Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Computationally efficient optimization of coupling tapers for transmission-line networks under obliquely incident illumination

Valagiannopoulos, C. A. & Alitalo, P., Dec 1 2013, 2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013 - Proceedings. p. 420-421 2 p. 6710871. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Concealing a perfectly conducting object with edges inside a dielectric superstrate

Valagiannopoulos, C. A. & Tsitsas, N. L., Dec 2 2013, Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013. p. 1269-1272 4 p. 6632451. (Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Design and free-space measurements of a simple electromagnetic cloak for conducting cylindrical objects

Alitalo, P., Valagiannopoulos, C. A. & Culhaoglu, A. E., May 16 2013, In : AIP Advances. 3, 4, 042135.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Electromagnetic absorption of gaussian beams by a grounded layered structure

Valagiannopoulos, C., Apr 1 2013, In : Radioengineering. 22, 1, p. 333-340 8 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Improving the electrostatic field concentration in a negative-permittivity wedge with a grounded "bowtie" configuration

Valagiannopoulos, C. A. & Sihvola, A., Jul 24 2013, In : Radio Science. 48, 3, p. 316-325 10 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
9 Citations (Scopus)
2 Citations (Scopus)

Low interaction of an arbitrarily large PEC cylinder with em waves filtered through a layered structure

Valagiannopoulos, C. A., Aug 14 2013, 2013 7th European Conference on Antennas and Propagation, EuCAP 2013. p. 2238-2242 5 p. 6546689. (2013 7th European Conference on Antennas and Propagation, EuCAP 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Low-pass features of optical nano-filters constituted by simple layered structures

Valagiannopoulos, C. A. & Sihvola, A., Sep 1 2013, In : Microwave and Optical Technology Letters. 55, 9, p. 2099-2106 8 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

On enhancing the field in the vicinity of a metamaterial wedge with use of an auxiliary dielectric tip

Valagiannopoulos, C. A. & Sihvola, A., Aug 14 2013, 2013 7th European Conference on Antennas and Propagation, EuCAP 2013. p. 3452-3456 5 p. 6546951. (2013 7th European Conference on Antennas and Propagation, EuCAP 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Optimal directional pattern design utilizing arbitrary microphone arrays: A continuous-wave approach

Delikaris-Manias, S., Valagiannopoulos, C. A. & Pulkki, V., Sep 9 2013, 134th Audio Engineering Society Convention 2013. p. 1-10 10 p. (134th Audio Engineering Society Convention 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Perfect absorption in graphene multilayers

Valagiannopoulos, C. & Nefedov, I. S., 2013, In : Journal of Optics.

Research output: Contribution to journalArticle

94 Citations (Scopus)

The effective radiation pattern concept for realistic performance estimation of LTE wireless systems

Zarbouti, D., Tsoulos, G., Athanasiadou, G. & Valagiannopoulos, C., Dec 16 2013, In : International Journal of Antennas and Propagation. 2013, 746831.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Total absorption in asymmetric hyperbolic media

Nefedov, I. S., Valagiannopoulos, C. A., Hashemi, S. M. & Nefedov, E. I., Sep 23 2013, In : Scientific Reports. 3, 2662.

Research output: Contribution to journalArticle

51 Citations (Scopus)
2014

Demand curves and operator strategies in the finnish mobile broadband market

Katsigiannis, M. & Valagiannopoulos, C., Jan 1 2014, In : International Journal of Business Data Communications and Networking. 10, 1, p. 30-46 17 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Emulating hyperbolic-media properties with conventional structures

Valagiannopoulos, C. A. & Tretyakov, S. A., Jun 2014, In : New Journal of Physics. 16, 063004.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Hiding a bump on a PEC plane by using an isotropic lossless dielectric layer

Valagiannopoulos, C. A., Tsitsas, N. L. & Sihvola, A. H., Nov 1 2014, In : IEEE Transactions on Antennas and Propagation. 62, 11, p. 5706-5714 9 p., 6895287.

Research output: Contribution to journalArticle

8 Citations (Scopus)

How nonreciprocal is an effective permittivity matrix?

Valagiannopoulos, C. A., Sep 2014, In : Microwave and Optical Technology Letters. 56, 9, p. 2018-2021 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Hyperbolic-metamaterial antennas for broadband enhancement of dipole emission to free space

Valagiannopoulos, C. A., Mirmoosa, M. S., Nefedov, I. S., Tretyakov, S. A. & Simovski, C. R., Jan 1 2014, In : Journal of Applied Physics. 116, 16, 163106.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Mimicking the perfect electromagnetic conducting scattering mechanisms with suitable bi-isotropic media

Valagiannopoulos, C. A. & Sihvola, A. H., Nov 17 2014, In : Electromagnetics. 34, 8, p. 593-607 15 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

On the minimal scattering response of PEC cylinders in a dielectric cloak

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S. A., Mar 27 2014, In : IEEE Antennas and Wireless Propagation Letters. 13, p. 403-406 4 p., 6746011.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Scattering and absorption of a complex source point beam by a grounded lossy dielectric slab with a superstrate

Tsitsas, N. L., Valagiannopoulos, C. A. & Nosich, A. I., Oct 1 2014, In : Journal of Optics (United Kingdom). 16, 10, 105712.

Research output: Contribution to journalArticle

10 Citations (Scopus)