Mutual Coupling and Cross Polarization Reduction of a Compact Microstrip Array Antenna Using a Pair of Parasitic Resonators

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Zaker Reza

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED ELECTROMAGNETIC Year:2022 | Volume:9 | Issue:2 (23) Page(s): 71-80

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Information Journal Paper

Title

Mutual Coupling and Cross Polarization Reduction of a Compact Microstrip Array Antenna Using a Pair of Parasitic Resonators

Author(s)

Zaker Reza | Issue Writer Certificate

Keywords

Array antenna

Mutual Coupling

isolation

cross polarization

Abstract

In this article an efficient multifunctional method is presented to reduce Mutual Coupling and cross polarization, simultaneously in a 2-element H-plane Array antenna in a compact format. In this approach, a pair of parasitic microstrip elements is placed near the radiating edges in two radiation patches, creating a new field coupling path opposite to the main coupling, leading to a significant increase in isolation. In addition, due to the structure and position of these parasitic strips, the near field resulting from cross currents on the patches is significantly neutralized, leading to the elimination of cross polarization and thus improving the polarization purity. Furthermore, this method can prevent the increase of the cross polarization due to the error of probe position on the patches up to 8 dB. In order to validate the proposed method, an optimal sample is fabricated and measured and the results are compared to those of simulations. The measurements show more than 32dB isolation, over 30dB impedance matching, and about 38dB (reduced by at least 10dB) cross polarization, which are in good agreement with the simulations. The advantages of this design are that the gain and radiation efficiency are not decreased and the reduction of the resonance frequency is about 150 MHz which can decrease the overall size of the array. Finally, a comparison with novel designs and the related discussions are presented.

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APA: Copy

Zaker, Reza. (2022). Mutual Coupling and Cross Polarization Reduction of a Compact Microstrip Array Antenna Using a Pair of Parasitic Resonators. JOURNAL OF APPLIED ELECTROMAGNETIC, 9(2 (23) ), 71-80. SID. https://sid.ir/paper/960135/en

Vancouver: Copy

Zaker Reza. Mutual Coupling and Cross Polarization Reduction of a Compact Microstrip Array Antenna Using a Pair of Parasitic Resonators. JOURNAL OF APPLIED ELECTROMAGNETIC[Internet]. 2022;9(2 (23) ):71-80. Available from: https://sid.ir/paper/960135/en

IEEE: Copy

Reza Zaker, “Mutual Coupling and Cross Polarization Reduction of a Compact Microstrip Array Antenna Using a Pair of Parasitic Resonators,” JOURNAL OF APPLIED ELECTROMAGNETIC, vol. 9, no. 2 (23) , pp. 71–80, 2022, [Online]. Available: https://sid.ir/paper/960135/en

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