Comparison Design of The Feeding Method of A 4x4 Microstrip Array Antenna

Kurniawan, Farohaji and Sumantyo, Josaphat Tetuko Sri and Santoso, Cahya Edi and Sitompul, Peberlin Parulian and Razi, Pakhrur and Prabowo, Gunawan Setya and Utama, Agus Bayu (2019) Comparison Design of The Feeding Method of A 4x4 Microstrip Array Antenna. In: Effect of Earthquake Intensity to Land Deformation Observed from Space. In: 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring), 17-20 Juni 2019, Italy.

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Abstract

-The antenna design intended to develop at working frequencies 8.0 to 8.4 GHz. The array antenna designed in 4x4 array antenna with sequential phased feeding network. In this research, two feeding methods had been investigated and compared. That is microstrip feeding line and pin feeding line — this procedure aimed to find the most effective and its capability of feeding method. The circular shape is the main form of the patch design, then truncated by triangular shaped. And elliptical ring slot laid in the center of the patch antenna. The total size of the proposed antenna is 128 x 128 mm and printed o n NPC-H220A which has a thickness of 1.6mm, dielectric constant 2.17 and losses tangen 0.005. The performances of the antenna design are satisfied. The maximum gain reached about 12 dBic for microstrip feeding line method then pin feeding method could be obtained up to 14dBic. Moreover, reflection coefficient, S11 of the pin feeding method attained of 9.7% (7.6 – 8.6 GHz), and at its center frequency obtained of -20 dB reflection coefficient. While microstrip feeding line could achieve dual band at 7.4-8.39 GHz and 8.69-9.47 GHz or 23. 3%. The main lobe direction of the array is at 0 degrees. The array design delivered excellent performance for satellite communication applications.

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