Impedance-matched microwave lens
Pekka Alitalo, Olli Luukkonen, Joni Vehmas, Sergei Tretyakov
TL;DR
This paper proposes a microwave lens design using transmission-line networks that achieves high refractive index and near-perfect impedance matching, reducing reflectance compared to traditional dielectric lenses.
Contribution
It introduces a novel microwave lens design based on transmission-line networks with impedance matching, enhancing performance over conventional dielectric lenses.
Findings
The lens exhibits significantly reduced reflectance.
Simulation confirms effective impedance matching.
The design allows for customizable refractive indices.
Abstract
A microwave lens with highly reduced reflectance, as compared to conventional dielectric lenses, is proposed. The lens is based on two-dimensional or three-dimensional transmission-line networks that can be designed to have an effective refractive index larger than one, while having almost perfect impedance matching with free space. The design principles are presented and an example lens is studied using commercial simulation software.
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