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Evaluation of a simplified Random-LOS measurement setup for characterizing antennas on cars

Madeleine Schilliger Kildal (Institutionen för signaler och system, Antennsystem) ; Andres Alayon Glazunov (Institutionen för signaler och system, Antennsystem) ; J. Carlsson ; A. Majidzadeh
2017 11th European Conference on Antennas and Propagation, EUCAP 2017 p. 3007-3011. (2017)
[Konferensbidrag, refereegranskat]

The automotive industry is in need of reliable, accurate yet cost-effective over-the-air (OTA) characterization methods of the communications systems installed on cars. This paper analyses the scattering contributions to spurious variations of receive signals in a Random Line-of-Sight (Random-LOS) measurement setup in a semi-anechoic chamber. Figures of merit are the delay spread and the dynamic variations of the receive signals. Transmission measurements were performed on a two-element LTE shark-fin antenna mounted on the roof of a Volvo XC90. We show that by using a vertically oriented uniform linear array, with vertically polarized bowtie antenna elements, we can efficiently remove the unwanted ground reflection present when a single bowtie antenna is used. We also show that the improvement depends on the position of the antennas mounted on the car as well as on the azimuthal angle.

Nyckelord: anechoic chamber , antenna , measurements , Random Line-Of-Sight , RLOS , vehicular



Denna post skapades 2017-06-30. Senast ändrad 2017-08-11.
CPL Pubid: 250293

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Antennsystem (2014-2017)

Ämnesområden

Kommunikationssystem

Chalmers infrastruktur