Microwave Transmission-Line Lens Matched with Free Space

In order to mitigate the problem of unwanted reflections from a homogeneous dielectric lens, a lens based on periodic networks of transmission lines is proposed. Since the propagation constant and the impedance of the network can be varied to a large extent independently from each other, it is possi...

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Bibliographic Details
Main Authors: Alitalo, P., Vehmas, J., Luukkonen, O., Jylha, L., Tretyakov, S.
Format: Conference Proceeding
Language:English
Subjects:
Dielectric materials
Frequency
Impedance matching
Laboratories
Lenses
Optical design
Permittivity
Propagation constant
Space technology
Transmission lines
Online Access:Request full text
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Summary:In order to mitigate the problem of unwanted reflections from a homogeneous dielectric lens, a lens based on periodic networks of transmission lines is proposed. Since the propagation constant and the impedance of the network can be varied to a large extent independently from each other, it is possible to realize a lens with a high index of refraction while having almost perfect impedance matching with the surrounding medium.
DOI:10.1109/IWAT.2008.4511337