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Wideband, lowloss, low-cost, quasi-TEM metamaterial-based local waveguides in air gaps between parallel metal plates

Per-Simon Kildal (Institutionen för signaler och system, Antenner) ; Eva Rajo-Iglesias (Institutionen för signaler och system, Antenner) ; E. Alfonso ; A. Valero ; Ashraf Uz Zaman (Institutionen för signaler och system, Antenner)
International Conference on Electromagnetics in Advanced Applications (ICEAA 2009), Torino, Italy, September 14-18, 2009 Vol. 1-2 (2009), p. 565-568.
[Konferensbidrag, refereegranskat]

The paper presents a new waveguide appearing in the air gap between two parallel metal plates. One of the plates has a metal texture, and confined local waves follow ridges in the texture whereas they are prohibited from propagating in other directions by metal pins in the texture. The pins (or bed of nails) provide a high impedance surface that creates a stop band when used together with a metal surface, i.e. a parallel plate cut-off. The principle performance of the ridge gap waveguide is explained by numerical simulations of the dispersion diagram, both to show the parallel plate cut-off generated by the pin surface, but also to see the quasi-TEM wave propagating along the ridge. The performance is validated by numerical simulations and experimentally of a ridge gap waveguide with two 90 deg bends, including transitions to coaxial connectors. The ridge gap waveguide has a large potential for use up to THz because it can be realized without conducting joints between metal parts, and it lends itself to co-design and integration with active components.

Denna post skapades 2010-01-17. Senast ändrad 2016-05-17.
CPL Pubid: 108227


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Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)


Elektroteknik och elektronik

Chalmers infrastruktur