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Triangular Microstrip Antenna Array with Dolph Chebyshev Current Distribution Feeding Network

Effrina Yanti Hamid and Hepi Ludiyati

School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung, Indonesia

 (Tel : +62-22-2501661; E-mail: hepi_ludiyati@yahoo.com)

Abstract- Microstrip antenna is one of the planar antenna  types that have eminency are light weight, low profile, conformal or easily mounted, easy in fabrication, portable and easy to integrate with other devices. One way to increase the gain of microstrip antenna is arrayed. In this research, we have performed the calculation, simulation, implementation and measurement of triangular microstrip antenna at a frequency of 1805 - 1880 MHz. This antenna is composed of four triangular patch elements to meet the needs of the gain 6 dB greater than the gain of one element and feeds using microstrip transmission line with the Dolph Chebyshev current distribution. Air slot between two a substrate is used to satisfy bandwidth requirements.  Dimensional simulation results using CST Microwave Studio Version 2010 are implemented and printed above on Epoxy FR-4 substrate. From the simulation results obtained antenna bandwidth is 176 MHz for a maximum of SWR 1.5, the gain is 10.8 dB and side lobe level of -13 dB, while the measurement results obtained bandwidth of 182.2 MHz for a maximum of SWR is 1.5, the gain is 8.1 dB and side lobe level of -13 dB.

Keyword: gain, bandwidth, SWR (standing wave ratio), side lobe level, Dolph Chebyshev.