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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-04-08
A Novel Compact Feeding Network for Array Antenna
By
Pejman Mohammadi,

    Dr. Pejman Mohammadi

    Islamic Azad University of Urmia

    Iran

    Homepage

Asrin Piroutiniya,

    Dr. Asrin Piroutiniya

    Islamic Azad University Urmia Branch

    Iran

    Homepage

Mohamad Hosein Rasekhmanesh

    Dr. Mohamad Hosein Rasekhmanesh

    Islamic Azad University Urmia Branch

    Iran

    Homepage

Progress In Electromagnetics Research Letters, Vol. 59, 101-107, 2016
doi:10.2528/PIERL16021004 | Google Scholar

Abstract
A novel feeding network is investigated both theoretically and experimentally. The proposed system with combination of a Wilkinson power divider and two branch-Line couplers is established. The output signals of the system have the same amplitude and 900 phase difference with each other. The size reduction technique is applied to minimize the physical size of the proposed network. In this technique, the ground of the structure is defected, and distributed capacitors and inductors are added to empty space of the branch-line couplers. Moreover, meandered lines are used in order to match the output impedance of the Wilkinson power divider arms and reduce its size. The initial design realized in 2.5 GHz shows the fractional bandwidth of 24%. Then a miniaturized structure is fabricated with 42% smaller size than the main structure while it shows similar electrical performance. For both cases, measurement and simulation results are in good agreement with each other.
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Citation
Pejman Mohammadi, Asrin Piroutiniya, and Mohamad Hosein Rasekhmanesh, "A Novel Compact Feeding Network for Array Antenna," Progress In Electromagnetics Research Letters, Vol. 59, 101-107, 2016.
doi:10.2528/PIERL16021004
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