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Design and Performance Analysis of Linear Array Microstrip Antennas with Mitered-Bends Feeding Network for X-Band Radar Applications

  Bidadariana Yunia Utami Putri (1*), Eka Setia Nugraha (2), Anantia Prakasa (3), Subroto Fajar Siddiq (4)

(1) Institut Teknologi Telkom Purwokerto - Indonesia
(2) Institut Teknologi Telkom Purwokerto - Indonesia
(3) Institut Teknologi Telkom Purwokerto - Indonesia
(4) PT Len Industri (Persero) - Indonesia
(*) Corresponding Author

Received: November 29, 2019; Revised: February 17, 2020
Accepted: March 12, 2020; Published: August 31, 2020


How to cite (IEEE): B. Y. Putri, E. S. Nugraha, A. Prakasa,  and S. F. Siddiq, "Design and Performance Analysis of Linear Array Microstrip Antennas with Mitered-Bends Feeding Network for X-Band Radar Applications," Jurnal Elektronika dan Telekomunikasi, vol. 20, no. 1, pp. 9-15, Aug. 2020. doi: 10.14203/jet.v20.9-15

Abstract

To accurately detect objects, the radar antenna must have a high gain for the desired range. The antenna uses an array method to increase the gain. It has a unidirectional radiation pattern to meet the X-band radar implementation as a ship navigation tool. The X-band radar works at high frequencies. Thus, it will be more sensitive in detecting small particles, including rain particles. The use of a mitered-bends feeding network method by cutting the 90-degree curve is to maximize the power transmitted to reduce losses. This method spreads the bandwidth of the antenna. The antenna is designed and fabricated into a linear array of 8 elements, using the R04003C Rogers substrate with a microstrip line supply. This study limits up to 8 elements of radiation, followed by the addition of a method to expand the bandwidth of antennas. Considering material limitation and duration of antenna design. The final antenna dimensions are 142.40 mm × 42.8 mm. The measuring results show fc = 9.496 GHz, S11 = -32.64 dB, VSWR 1.05, bandwidth = 41.9 MHz (9.5159 GHz - 9.4740 GHz), and gain 8.8 dB as well as a linear polarized antenna with unidirectional pattern direction. The radar antenna tends to have a narrow beamwidth and high gain.


  http://dx.doi.org/10.14203/jet.v20.9-15

Keywords


X-band radar; microstrip antennas; linear array; mitered-bends; gain; unidirectional

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