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Muvianto, Cahyo Mustiko Okta
Universitas Mataram
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Journal : Jurnal Rekayasa elektrika

 1 
Perancangan Antena Yagi Gain Tinggi Pada Ground Control Station Wahana Udara Nirawak Melvi Melvi; Nur Fadillah; Yetti Yuniati; Aryanto Aryanto; Nora Aditiyan; Cahyo Mustiko Okta Muvianto; Ardian Ulvan
Jurnal Rekayasa Elektrika Vol 16, No 3 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1062.68 KB) | DOI: 10.17529/jre.v16i3.18682

Abstract

The uncrewed Aerial Vehicle (UAV) operation is currently dominated by autonomous technology (autopilot) rather than manual control via remote control. During flying the mission autonomously, communication between the UAV and the Ground Control Station (GCS) must be in good and stable conditions. The GCS can well receive the telemetry data and payload sensor data carried by the vehicle. Conversely, any inconsistency parameters can be corrected by the GCS before transmitted to the UAV. Therefore, the role of the antenna is crucial to avoid signal loss during the communication process. This study focuses on GCS’s antenna. By designing the Yagi type antenna with the optimization of the distance, the number of directors, material, and shape of the reflector through CST simulation. The best option chosen is the Yagi antenna with the same distance between directors, seven directors, copper material, and flat reflectors with a VSWR of 1.1134, return loss -25.411 dB and 10.7 dB of gain. The measurement result after fabrication is the VSWR of 2.165 and the return loss of -8.677 dB. The antenna test results, when the UAV was flown as far as 2.5 km, found that the signal strength received by the GCS is -70.68 dBm with RSSI 107, and the signal strength in percent is 96%. 
Mangosteen Flesh Condition Detector Based on Microwave Non-destructive Technique Using Spiral Resonator Sensor’s Cahyo Mustiko Okta Muvianto; Muhammad Afrizal G. Rasyda; Suthami Ariessaputra; Kurniawan Yuniarto; Sudi Mariyanto Al Sasongko; Budi Darmawan; Syafaruddin Ch
Jurnal Rekayasa Elektrika Vol 18, No 1 (2022)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (822.664 KB) | DOI: 10.17529/jre.v18i1.23761

Abstract

The mangosteen fruit has a characteristic thick skin, so it is difficult to know the condition of the flesh. Farmer can only know damage to the fruit flesh after the fruit skin had opened. Detection of the quality of the mangosteen flesh can be detected using a sensor capable of penetrating the thickness of the mangosteen rind. Flesh quality detection is carried out based on the S21 value (attenuation of mangosteen flesh value) using a portable device equipped with a sensor and capable of emitting microwaves. The S21 value of the fruit's flesh was measured using a spiral resonator that functioned as a sensor. The prototype device consists of an oscillator circuit, a power splitter, and a phase detector with 2507 MHz. Fruit flesh had divided into two conditions: damaged for fruit flesh with yellow sap or Translucent Flesh Disorder, and suitable condition for clean fruit flesh. The results showed that the fruit flesh had an average S21 value of 7.041 dB for damaged flesh and 6.007 dB for good flesh condition. The difference in the value of S21 had used as a reference for detecting the shape of the fruit flesh, with the detection threshold calculated by the Support Vector Machine, resulting in a threshold value of 6.712 dB.
Perancangan Antena Yagi Gain Tinggi Pada Ground Control Station Wahana Udara Nirawak Melvi Melvi; Nur Fadillah; Yetti Yuniati; Aryanto Aryanto; Nora Aditiyan; Cahyo Mustiko Okta Muvianto; Ardian Ulvan
Jurnal Rekayasa Elektrika Vol 16, No 3 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v16i3.18682

Abstract

The uncrewed Aerial Vehicle (UAV) operation is currently dominated by autonomous technology (autopilot) rather than manual control via remote control. During flying the mission autonomously, communication between the UAV and the Ground Control Station (GCS) must be in good and stable conditions. The GCS can well receive the telemetry data and payload sensor data carried by the vehicle. Conversely, any inconsistency parameters can be corrected by the GCS before transmitted to the UAV. Therefore, the role of the antenna is crucial to avoid signal loss during the communication process. This study focuses on GCS’s antenna. By designing the Yagi type antenna with the optimization of the distance, the number of directors, material, and shape of the reflector through CST simulation. The best option chosen is the Yagi antenna with the same distance between directors, seven directors, copper material, and flat reflectors with a VSWR of 1.1134, return loss -25.411 dB and 10.7 dB of gain. The measurement result after fabrication is the VSWR of 2.165 and the return loss of -8.677 dB. The antenna test results, when the UAV was flown as far as 2.5 km, found that the signal strength received by the GCS is -70.68 dBm with RSSI 107, and the signal strength in percent is 96%. 
Mangosteen Flesh Condition Detector Based on Microwave Non-destructive Technique Using Spiral Resonator Sensors Muvianto, Cahyo Mustiko Okta; Rasyda, Muhammad Afrizal G.; Ariessaputra, Suthami; Yuniarto, Kurniawan; Sasongko, Sudi Mariyanto Al; Darmawan, Budi; Ch, Syafaruddin
Jurnal Rekayasa Elektrika Vol 18, No 1 (2022)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v18i1.23761

Abstract

The mangosteen fruit has a characteristic thick skin, so it is difficult to know the condition of the flesh. Farmer can only know damage to the fruit flesh after the fruit skin had opened. Detection of the quality of the mangosteen flesh can be detected using a sensor capable of penetrating the thickness of the mangosteen rind. Flesh quality detection is carried out based on the S21 value (attenuation of mangosteen flesh value) using a portable device equipped with a sensor and capable of emitting microwaves. The S21 value of the fruit's flesh was measured using a spiral resonator that functioned as a sensor. The prototype device consists of an oscillator circuit, a power splitter, and a phase detector with 2507 MHz. Fruit flesh had divided into two conditions: damaged for fruit flesh with yellow sap or Translucent Flesh Disorder, and suitable condition for clean fruit flesh. The results showed that the fruit flesh had an average S21 value of 7.041 dB for damaged flesh and 6.007 dB for good flesh condition. The difference in the value of S21 had used as a reference for detecting the shape of the fruit flesh, with the detection threshold calculated by the Support Vector Machine, resulting in a threshold value of 6.712 dB.
Co-Authors Abdullah Zainuddin Abdullah Zainuddin Ahmad Zafrullah Aksan Mujahalyt Anang Lastriyanto Anugrah Fajar Dirgantara Akbar Ardian Ulvan Ariessaputra, Suthami Ario Yudo Husodo Aryanto Aryanto Budi Darmawan Budi Darmawan Budi Darmawan Budi Irmawati Cipta Rahmadani Danang Januar Dani Galuh Karin Puspita Sari I Gede Putu Laba Sepriyadi Sudhiarsana I Nyoman Wahyu Satiawan I Wayan Suwika Adnyana Ida Bagus Fery Citarsa Indra Jaya Joko Sumarsono Kurniawan Yuniarto Kurniawan Yuniarto Lalu Arioki Setiadi M Junaidi M. Naironul Haq Made Sutha Yadnya Melvi . Muhamad Ihsan Febriyanto Mbele Muhammad Afrizal G. Rasyda Muhammad Fajri Nora Aditiyan Nur Fadillah Nurtiti Nurtiti Pahrurrozi Pahrurrozi Paniran Paniran Paniran Ramaditia Dwiyansaputra Rasyda, Muhammad Afrizal G. Sandhi Wahdania Sasongko, Sudi Mariyanto Al Sudi Mariyanto Al Sasongko Syafaruddin Ch Syafaruddin Syafaruddin Teti Zubaidah Thauty, Achmad Gildas Warindi D Wirararama Wedashwara Yetti Yuniati