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  4. Phase-Equalized Periodic Series-Feeding Network from Structural Asymmetry
 
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2019
Konferenzbeitrag
Titel

Phase-Equalized Periodic Series-Feeding Network from Structural Asymmetry

Abstract
All open 1D-periodic structures with symmetric unit cell exhibit abrupt variation in their physical parameters at the equi-phase frequency (G point of reciprocal space), which usually results in undesirable radiation characteristics. This is the case for leaky-wave antennas (LWAs), but also for Series Feeding Networks (SFNs), where radiation could be considered as energy propagation into the feeding ports. We show here that the response of a periodic SFN can be equalized versus frequency through the equi-phase frequency, just as that of LWAs, by the introduction a proper amount of asymmetry in its unit cell. Moreover, we illustrate this fact with the example of a millimeter-wave (77 GHz) array of antipodal Vivaldi antennas feed by such an asymmetric SFN.
Author(s)
Al-Bassam, A.
Heberling, D.
Caloz, C.
Hauptwerk
13th European Conference on Antennas and Propagation, EuCAP 2019
Konferenz
European Conference on Antennas and Propagation (EUCAP) 2019
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Language
Englisch
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