Optimal Synthesis of Feeding Network for Implementation of Dolph-Chebyshev Current Distribution on Microstrip Antenna Arrays

Ioannis P. Gravas, Zaharias D. Zaharis, Traianos V. Yioultsis, Pavlos Lazaridis, Keyur Mistry, Thomas D. Xenos

Research output: Contribution to journalArticle

Abstract

A microstrip feeding network (MFN) that implements
a Dolph-Chebyshev current distribution is designed to feed
a microstrip antenna array (MAA) operating in B2 LTE band.
The study consists of three phases. In the first one, the elements
of MAA are directly excited by equi-phase current sources
complying with a Dolph-Chebyshev amplitude distribution to
ensure a side lobe level (SLL) of 􀀀20 dB. Then, MAA is optimized
for maximum forward gain. Finally, the input impedances of
the elements of the optimized MAA and the element spacing
are recorded. In the second phase, the MFN is considered
to terminate at lumped loads with values equal to the input
impedances of the respective elements of the optimized MAA,
and is then optimized to achieve low standing wave ratio, high
power efficiency, and output currents equal to those applied in
the first phase by the current sources. All optimizations are
performed with an improved particle swarm optimization variant
in conjunction with CST. In the third phase, the optimized MFN
is attached to MAA and is evaluated with CST. The purpose of
this study is to show that it is possible to design an MFN that
satisfies multiple requirements, without the knowledge of MAA
geometry.
LanguageEnglish
Pages6672-6676
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number10
Early online date2 Jul 2019
DOIs
Publication statusPublished - 1 Oct 2019

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Microstrip antennas
Antenna arrays
Particle swarm optimization (PSO)

Cite this

Gravas, Ioannis P. ; Zaharis, Zaharias D. ; Yioultsis, Traianos V. ; Lazaridis, Pavlos ; Mistry, Keyur ; Xenos, Thomas D. / Optimal Synthesis of Feeding Network for Implementation of Dolph-Chebyshev Current Distribution on Microstrip Antenna Arrays. In: IEEE Transactions on Antennas and Propagation. 2019 ; Vol. 67, No. 10. pp. 6672-6676.
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Optimal Synthesis of Feeding Network for Implementation of Dolph-Chebyshev Current Distribution on Microstrip Antenna Arrays. / Gravas, Ioannis P.; Zaharis, Zaharias D.; Yioultsis, Traianos V.; Lazaridis, Pavlos; Mistry, Keyur; Xenos, Thomas D.

In: IEEE Transactions on Antennas and Propagation, Vol. 67, No. 10, 01.10.2019, p. 6672-6676.

Research output: Contribution to journalArticle

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AU - Gravas, Ioannis P.

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