Energy tunneling through narrow waveguide channel and design of small antennas | Zendy

Miranda Mitrovic | Zendy; Branka Jokanović | Zendy

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Energy tunneling through narrow waveguide channel and design of small antennas

Author(s) -

Miranda Mitrovic,

Branka Jokanović

Publication year - 2011

Publication title -

serbian journal of electrical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.133

H-Index - 5

eISSN - 2217-7183

pISSN - 1451-4869

DOI - 10.2298/sjee1101063m

Subject(s) - quantum tunnelling , directivity , transmission coefficient , metamaterial , permittivity , antenna (radio) , channel (broadcasting) , dielectric , physics , transmission (telecommunications) , optics , materials science , electrical engineering , optoelectronics , engineering

In this paper we investigate the conditions for energy tunneling through narrow channel obtained by reducing the height of rectangular waveguide. Tunneling of the energy occurs at the frequency for which the effective dielectric permittivity of the channel becomes equal to zero, so it can be treated as an ENZ (epsilon-near-zero) metamaterial. We investigated how geometry of the channel and dielectric permittivity affect the transmission coefficient and field density in the channel. Adding slots in the channel, which are placed orthogonally to the wave propagation, we designed a small antenna with directivity of 5.44 dBi at the frequency of 3 GHz

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