Design and experimental validation of a windscreen patch array for C2C communications

Abstract

In this paper the design and experimental validation of a 2x1 linearly polarized patch array for Car-to-Car communications is presented. The antenna operates in the 5.850-5.950 GHz frequency band and has been designed to be integrated in a car windscreen. Thanks to the presence of the glass superstrate, a valuable miniaturization effect has been obtained. On the other hand, surface waves excited into the glass superstrate reduce antenna gain, and surface wave diffraction injures radiation pattern too. In order to limit above phenomena, a square copper ring film has been printed on the same plane of the radiating elements. To compensate for the windscreen inclination respect to the ground, a proper phase shift between the currents of the two radiating elements has been considered.

Bandwidth Enhancement of a Monopolar Patch Antenna With V-Shaped Slot for Car-to-Car and WLAN Communications

“…16, which is still suitable for C2C and WLAN communications. 11 can be produced if the V-shaped slot is added to the patch antenna. The V-shaped slot is simply equivalent to a capacitance loading to reduce the resistance and the reactance of the antenna which contributes a wider impedance bandwidth.…”

“…The V-shaped slot develops a new resonant mode of TM 11 . A parametric study for the change in input impedance, parameters of V-shaped slot, and a current distribution are going to carry out and discuss as follows.…”

“…It changes the current path and develops a new resonant mode of TM 11 . The location and length of V-shaped slot, d 1 , d 2 , and d 3 , are related to both of the impedance match and the resonant frequency at low frequency band, while the slot width, W s mainly affects the impedance matching.…”

“…Recently, wireless access in vehicular environments (WAVE) referring to the standard of IEEE 802.11p is proposed. A number of low-profile antennas operating at 2.4 GHz and 5.8 GHz [8]- [11], [20] have been demonstrated; nonetheless, their operating bandwidths are narrow and the fabrication costs may be high.…”

Printed Wideband Antenna for LTE-Band Automotive Applications

“…Thus, the antenna design and arrangement must be carefully optimized to limit the mutual coupling between radiating structures, as discussed in [3], where four possible Dedicated Short Range Communications (DSRC, 5850-5925 MHz) antennas are studied to determine their position in a compact shark-fin module which guarantees optimum performance even in presence of other antennas for different services. It is worth noting that achieving antenna requirements could be relatively easy for high-frequency applications (beyond 1GHz) [4], since the physical size of resonant radiating elements is compatible with the available space inside the device housing. On the other hand, miniaturization techniques are required to integrate antennas for low-frequency applications (below 1GHz) [5].…”