Application of Wire-based Metamaterials for Antenna Miniaturization (CROSBI ID 555323)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Hrabar, Silvio ; Bonefačić, Davor ; Muha, Damir
engleski
Application of Wire-based Metamaterials for Antenna Miniaturization
This paper reviews recent numerical and experimental investigation of application of wire-based ENZ metamaterials in miniaturization of waveguide horn antennas, undertaken at University of Zagreb. Two representative examples of prototyped shortened horn antennas that operate in 10 GHz band are described: the horn with embedded single-wire ENZ slab and the horn with embedded double-wire ENZ slab. These two horn antennas had lengths of 52% and 33% of the length of the optimal horn, respectively. Measured gain was found to be very similar to the gain of the full length optimal horn (within 0.1 dB), but in a narrow band (5% - 12%). Finally, the results of numerical study of applicability of a simple Drude model of wire medium in the design of shortened horn antennas are presented. The results show that Drude model of wiremedium is not accurate if the wires are not connected to the metallic plates at an angle of 90 degrees. However, even in this case a Drude model is good starting point for the initial design, while the required antenna characteristics should be achieved by an additional numerical optimization.
metamaterial; ENZ; horn antenna
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Podaci o prilogu
620-623.
2009.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of 3rd European Conference on Antennas and Propagation EuCAP 2009
Solbach, Klaus
Frankfurt: VDE
Podaci o skupu
3rd European Conference on Antennas and Propagation
predavanje
23.03.2009-27.03.2009
Berlin, Njemačka