APPLICATION AND IMPROVEMENT PERFORMANCE OF UWB PCB DOUBLE LAYER MICROSTRIP ANTENNA FOR PARTIAL DISCHARGE DETECTOR

• Main Author: Muhammad Hamdani, Yuda
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/41724
• Institution: Institut Teknologi Bandung

Partial discharge (PD) diagnosis with ultra high frequency (UHF) method has been developed with various varied geometric shapes to detect electromagnetic waves emitted on high voltage equipment due to PD activities. PD measurement using the UHF method is to measure the waves caused by the partial discharge which will propagate from the source of the PD out of the insulating material. EM wave propagation generated by PD can be detected using sensors, one of them is an antenna. In this research there are five new designs of microstrip antennas. The design of the first microstrip antennas is reference dimensions. The design of the second microstrip antennas is length of arms. The design of the third microstrip antennas is length of arms after transition. The design of the fourth microstrip antennas is feed. The design of the fifth microstrip antennas is length of groundplane. The antenna is designed with FR4 epoxy substrate which has dimensions of length and width of substrate is 160 mm and 54 mm, thickness is 1.6 mm. Antennas are designed in the frequency range of 50 MHz - 4 GHz. 3D-CST STUDIO SUITE software is used to design antennas. The antenna that has been designed is then implemented on printed cicuit board (PCB) material and measured using a vector network analyzer (VNA) to determine the antenna parameter characteristics. Antenna characteristic parameters which include return loss (RL), bandwidth and VSWR show the corresponding results based on the simulation results and measurement results. The three antenna designs have RL values L -10dB and VSWR ? 2. Testing of microstrip antennas for detecting PD in air and isolation using plate-needle electrodes. PD test results show the design of the microstrip antenna with length of arms after transition modification has good sensitivity in detecting PD compared to another microstrip antenna. In addition, the microstrip antenna with length of arms after transition modification has a wide bandwidth value when compared to another microstrip antenna