ANTENA DEVELOPMENT FOR AUTOMOTIVE RADAR SYSTEMS FOR ASSISTED DRIVING APPLICATIONS

• Main Author: Fairuz Azfa Elsubeza, M.
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/82203
• Institution: Institut Teknologi Bandung

The increasing number of motor vehicles in Indonesia has led to a significant rise in traffic accidents. One contributing factor is the lack of advanced safety systems in many vehicles, particularly entry-level models. To address this issue, this research focuses on developing an affordable and easily integrable Radio Frequency (RF)-based forward sensing system for entry-level vehicles. The system utilizes FMCW (Frequency Modulated Continuous Wave) radar technology operating at 6 GHz. This frequency was chosen due to component availability, adequate spectrum allocation in Indonesia, and its ability to provide good detection resolution with minimal interference from the surrounding environment. The main components of the system are a microstrip patch antenna and a transceiver. The microstrip patch antenna was selected for its simple structure, low fabrication cost, low profile, and ease of integration with vehicles. The antenna design was optimized to operate at 6 GHz using CST software. Various antenna configurations, including 1-array, 2-array, and 4-array, were simulated and analyzed to achieve the best performance in terms of return loss, VSWR (Voltage Standing Wave Ratio), and gain. Test results showed good agreement between simulation and measurement results, validating the antenna design. In addition to the antenna, a transceiver was also designed and built using SDR software, based on an FMCW block diagram. The SDR was designed to operate at the desired frequency of 6 GHz and has a bandwidth of 50 MHz, allowing it to work well with a range resolution of 3 meters. The integrated system, consisting of the antenna and SDR transceiver circuit, has been tested through a series of indoor and outdoor tests, meeting the objectives required for developing an automotive radar suitable for assisted driving applications