A three-dimensional backward-wave network matched with free space
Pekka Alitalo, Olli Luukkonen, Sergei Tretyakov
TL;DR
This paper presents a 3D backward-wave network that is impedance-matched with free space, enabling efficient field transfer and negative refraction, validated through full-wave simulations.
Contribution
The design of a 3D backward-wave transmission-line network with impedance matching to free space and a transition layer for effective field coupling is introduced.
Findings
Impedance matching with free space achieved
Negative refraction confirmed at slab interfaces
Full-wave simulations validate the design
Abstract
A backward-wave slab based on a capacitively and inductively loaded three-dimensional transmission-line network is designed in such a way that impedance-matching with free space is obtained. To enable field propagation from free space to the network and vice versa, the use of a transition layer is proposed. Matching of the designed network with free space and negative refraction occurring at the slab interfaces are confirmed with full-wave simulations.
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