2011 : The 12 th Seminar on Intelligent Technology and Its Applications
In this paper, a 4.2 GHz collinear antenna is designed numerically and characterized experimentally for satellite mobile communication. The proposed antenna is intended to be used in the satellite communication namely small earth station (SBM: Stasiun Bumi Mini) that typically uses a type of antenna with parabolic reflector. Due to the high cost and large dimension of parabolic antenna system, the proposed antenna which can be easy to be installed is expected to be the alternative for the communication usage. The proposed antenna is constructed of 10 radiator stubs and its parameters are investigated numerically to achieve the optimum design including the working frequency, working bandwidth, return loss, VSWR (Voltage Standing Wave Ratio), gain and radiation pattern. After the fabrication process, the characteristics of realized antenna are measured experimentally to be compared with the numerical design results. In general, it should be noted that the parameters of fabricated antenna prototype are coincided qualitatively with the simulated ones in terms of working frequency, working bandwidth, return loss, VSWR, and radiation pattern. The result also shows that the fabricated collinear antenna prototype has measured gain of 5.5 dB compared to the simulated result of 4.2 dB.