The synthesis of an antenna array with filtering capabilities is approached by developing a model suitable for a coupled-resonators description. A redefinition of the relevant quantities is introduced, leading to enforcing prescribed input admittance and far-field “voltage gain” in the desired direction versus frequency. Synthesis is then carried out by a lossy transversal network, to which conventional coupling-matrix transformations can be applied to alter the topology. Additionally, assuming antennas exhibit a uniform quality factor, a class of synthesizable transfer functions is identified, although with trade-offs among in-band return loss and gain flatness. A 20 GHz simulated patch example validates the technique.

Filtenna array design via a lossy coupled-resonators filter approach

Oldoni, Matteo;Gentili, Gian Guido;Macchiarella, Giuseppe;D’Asta, Cristina
2023-01-01

Abstract

The synthesis of an antenna array with filtering capabilities is approached by developing a model suitable for a coupled-resonators description. A redefinition of the relevant quantities is introduced, leading to enforcing prescribed input admittance and far-field “voltage gain” in the desired direction versus frequency. Synthesis is then carried out by a lossy transversal network, to which conventional coupling-matrix transformations can be applied to alter the topology. Additionally, assuming antennas exhibit a uniform quality factor, a class of synthesizable transfer functions is identified, although with trade-offs among in-band return loss and gain flatness. A 20 GHz simulated patch example validates the technique.
2023
2023 53rd European Microwave Conference (EuMC)
978-2-87487-072-9
Filter synthesis, antenna, polynomial, lossy filter, broadside radiation, gain, directivity
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1260169
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