Pattern reconfigurable ESPAR antenna for vehicle‐to‐vehicle communications. Issue 3 (11th January 2018)

• Record Type: Journal Article
• Authors: Marantis, Leonidas; Rongas, Dimitrios; Paraskevopoulos, Anastasios; Oikonomopoulos‐Zachos, Christos; Kanatas, Athanasios
• Is Part Of: IET microwaves, antennas & propagation. Volume 12:Issue 3(2018)
• Page Start: 280
• Page End: 286
• Publication Date: 2018-01-11
• Subjects: microwave antenna arrays -- monopole antenna arrays -- directive antennas -- antenna radiation patterns -- omnidirectional antennas -- impedance matching -- vehicular ad hoc networks -- mobile antennas -- intelligent transportation systems; frequency 5.9 GHz -- pattern reconfigurable ESPAR antenna -- vehicle‐to‐vehicle communications -- electronically switched parasitic array radiator antenna -- intelligent transportation systems standards -- pattern switching capability -- antenna radiation patterns -- quasiomnidirectional antennas -- directive antennas -- mutual coupling -- parasitic elements -- PIN diode switches -- impedance matching -- switching states -- low loss Rogers dielectric -- parasitic monopoles -- active monopoles; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2017.0209
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : This study proposes an electronically switched parasitic array radiator (ESPAR) antenna at 5.9 GHz to meet the intelligent transportation systems standards. This antenna offers pattern switching capability with three distinct radiation patterns, i.e. one quasi‐omni and two directives in opposite directions, by controlling the mutual coupling at the parasitic elements with PIN diode switches. A considerable gain increase of up to 3 dB is achieved in the directive mode, while maintaining a satisfying impedance matching between the switching states. The compact ESPAR antenna is printed on a low loss Rogers dielectric and consists of one active and two parasitic monopoles. S 11 and radiation pattern results are presented, derived from both simulations and measurements, exhibiting a close agreement.