Basari, Sumantyo, J.T.S. 2015. Circular-polarized Proximity-fed Tip-truncated Triangular Switchable Array for Land Vehicle Mobile System. International Journal of Technology. Volume 6(2), pp. 160-168
|Basari||Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok 16424, Indonesia|
|Josaphat Tetuko Sri Sumantyo||Center for Environmental Remote Sensing (CEReS), Chiba University 1-33, Yayoi, Inage, Chiba 263-8522 Japan|
This paper proposes a compact circularly polarized (CP) tip-truncated triangular patch array that is developed for land vehicle mobile system aiming at mobile satellite communications. The array is constructed by three patches, which its beam pattern can be switched in three 120°-coverage beam in azimuth plane with minimum gain requirement at fixed point of the elevation angle, in order for data communications with the large geostationary satellite can be achieved. The targeted gain is set to be 5 dBic at 48° of the looking angle from the satellite in Kanto area. The patches are fed with proximity feed technique owing to its simplicity and easier installation on the vehicle. The array performance is numerically analyzed with the method of moment (MoM) to clarify the array characteristics. Measurement results are provided to validate the simulated results. The results show that the array meets the specifications at targeted looking angle 48° with the gain is more than 5-dBic for each three-selectable beam in the azimuth plane.
Circularly Polarized Triangular Patch Array, Land Vehicle Mobile System, Proximity Feeding, Switchable Beam
Delgado, H.J., Williams, J.T., Long, S.A., (1989), Substraction of edge-diffracted fields in antenna radiation pattern for simulation of infinite ground plane, Electronics Letters, Vol. 25, pp. 694-696.
Garg, R., Bhartia, P., Bahl, I., Ittipiboon, A., (2001), Microstrip Antenna Design Handbook, Artech House, Boston, USA.
Ishihara, H., Yamamoto, A., Ogawa, K., (2002), A simple model for calculating the radiation patterns of antennas mounted on a vehicle roof, in Proc. Interim Int. Symp. on Antenna and Propagat., pp. 548-551.
Iyer, S.M.V., Karekar, R.N., (1991), Edge effects for resonance frequency of covered rectangular microstrip patch antenna, Electronics Letters, Vol. 27, pp. 1509-1511.
James, J.R., Hall, P.S., (1989), Handbook of Microstrip Antennas, Peter Peregrinus, London, UK.
Jang, J. H., Tanaka, M., Hamamoto, N., (2002), Portable and deployable antenna for ETS-VIII, in Proc. Interim Int. Symp. on Antenna and Propagation, pp. 49-52.
Kumar, G., Ray, K.P., (2003), Broadband Microstrip Antennas, Artech House, Boston, USA.
Lier, E., Jacobsen, K., (1983), Rectangular microstrip patch antennas with infinite and finite ground plane dimensions, IEEE Trans. on Antennas and Propagat., Vol. 31, pp. 978-984.
Lu, J.H., Wong, K.L., (2002), Singly-fed circularly polarised equilateral-triangular microstrip antenna with a tuning stub, IEEE Trans. Antennas and Propagat., Vol. 48, pp. 1869-1872.
Maci, S., Borselli, L., (1996), Diffraction at the edge of a truncated grounded dielectric slab, IEEE Trans. on Antennas and Propagat., vol. 44, pp. 863-873.
Maci, S., Borselli, L., Cucurachi, A., (2000), Diffraction from a truncated grounded dielectric slab: A comparative full-wave / physical-optics analysis, IEEE Trans. on Antennas and Propagat., Vol. 48, pp. 48-57.
Otero, M.F., Rojas, R.G., (1995), Analysis and treatment of edge effects on the radiation pattern of a microstrip patch antenna, Proc. IEEE AP-S Int. Symp., pp. 1050-1053.
Sri Sumantyo, J.T., Ito, K., (2004a), Simple satellite-tracking triangular-patch array antenna for ETS-III applications, IEICE Technical Report, AP2003-236, pp. 39-44.
Sri Sumantyo, J.T., Ito, K., Delaune, D., Tanaka, T., Yoshimura, H., (2004b), Simple satellite-tracking dual-band triangular-patch array antenna for ETS-VIII applications,” in Proc. IEEE Int. Symp. on Antenna and Propagat., pp. 2500-2503.
Sri Sumantyo, J.T., Ito, K., Takahashi, M., (2005a), Dual band circularly polarized equilateral triangular patch array antenna for mobile satellite communications, IEEE Trans. Antennas and Propagat., Vol. 53, No. 11, pp. 3477-3485.
Sri Sumantyo, J.T., Ito, K., Delaune, D., Tanaka, T., Onishi, T., Yoshimura, H., (2005b), Numerical analysis of ground plane size effects on patch array antenna characteristics for mobile satellite communications, Int. Journal of Numerical Modelling, Vol.18, pp. 95-106.
Sri Sumantyo J.T., Ito, K. (2006), Circularly polarised equilateral triangular patch array antenna for mobile satellite communications, IEE Proceedings - Microwaves, Antennas and Propagation, Vol. 153, pp. 544-550.
Suzuki, Y., Miyano, N., Chiba, T., (1987), Circularly polarised radiation from singly-fed equilateral-triangular microstrip antenna, Proceedings IEE, Vol. 134 (Pt.H) pp. 194-198.