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All Journal Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika
Saharani, Aulia
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Computer Science & IT Electrical & Electronics Engineering Engineering

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Desain Antena Radar Otomotif untuk Deteksi Target Jarak Jauh SAHARANI, AULIA; HENDRANTORO, GAMANTYO; KUSWIDIASTUTI, DEVY
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.1074

Abstract

ABSTRAKSeiring meningkatnya kebutuhan keselamatan berkendara, teknologi radar otomotif harus terus berkembang untuk memberikan kinerja yang lebih akurat dalam mendeteksi potensi bahaya di jalan. Salah satu aspek penting dalam meningkatkan keakuratan radar adalah resolusi sudut yang lebih tinggi, sehingga memungkinkan radar mendeteksi objek lebih jelas dan presisi. Dalam makalah ini, kami mengusulkan desain antena array linier menggunakan 128 elemen antena Franklin yang dioptimalkan melalui teknik pemangkasan elemen. Teknik ini efektif mengurangi jumlah elemen sebesar 35.7% dari jumlah awal tanpa mengorbankan performa antena. Hasil simulasi menunjukkan desain antena ini menghasilkan lebar beam sempit hingga 1°, tingkat sidelobe di bawah -20 dB, dan direktivitas tinggi di atas 10 dB. Selain itu, desain ini mampu mendeteksi objek dalam jangkauan hingga 300 meter dengan akurasi tinggi, menjadikannya efektif untuk aplikasi radar otomotif. Pendekatan ini efisien dari segi biaya dan material, serta meningkatkan deteksi radar dalam kondisi visibilitas rendah.Kata kunci: antena array, radar kendaraan, antena Franklin, lebar beam sempit, tingkat sidelobe rendah ABSTRACTWith the increasing demand for safety driving, automotive radar technology must continuously evolve to provide more accurate performance in detecting potential road hazards. One crucial aspect of improving radar accuracy is higher angular resolution, enabling the radar to detect objects more clearly and precisely. In this paper, we propose a linear array antenna design using 128 Franklin antenna elements optimized through thinning techniques. This technique effectively reduces the number of elements by 35.7% from the initial number without sacrificing antenna performance. Simulation results demonstrate that this antenna design produces a narrow beamwidth of up to 1°, sidelobe levels below -20 dB, and high directivity above 10 dB. Additionally, this design is capable of detecting objects within a range of up to 300 meters with high accuracy, making it effective for automotive radar applications. This approach is cost-effective and materialefficient, enhancing radar detection in low-visibility conditions.Keywords: array antenna, automotive radar, Franklin antenna, narrow beamwidth, low sidelobe level
Dual Mode MIMO-Beamforming Four Elements Array Antenna for Mobile Robot Communications at 5.6 GHz Muhsin, Muhsin; Saharani, Aulia; Nurlaili, Afina Lina
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 10 No. 2 (2024): June
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v10i2.28797

Abstract

Mobile robot communications are essential for robot teamwork. To enable communication between robots, reliable wireless communications must be deployed. Higher performance and capacity of communication are required. Multiple-input multiple-output (MIMO) and beamforming are important wireless communication technologies that use multiple antennas to improve communications performance and capacity. However, these two technologies have different requirements. MIMO requires the antenna element to be independent. While beamforming needs antennas to be coupled and fed by the same source. This paper proposes a dual-mode antenna for mobile robot communications at 5.6 GHz that supports both beamforming and MIMO. A single antenna consists of a planar dipole antenna arranged in a circular configuration. This antenna is then expanded to a four-element array antenna. Both MIMO and beamforming evaluations are performed. In MIMO mode, the BER performance is very similar to a non-correlated MIMO antenna. It is supported by the very low correlation between antennas below 0.01. Low coupling is also achieved below -16.5 dB. In beamforming mode, the proposed antenna achieves more than 8.6 dBi gain and good beam steering capability. It is supported by beam suppression with a 90° phase difference between the front and back direction. The proposed antenna performs well in both the MIMO and beamforming modes.
Co-Authors Devy Kuswidiastuti Gamantyo Hendrantoro Muhsin Muhsin Nurlaili, Afina Lina