Open AccessPattern reconfigurable ESPAR antenna for vehicle‐to‐vehicle communications
Author(s) -
Marantis Leonidas,
Rongas Dimitrios,
Paraskevopoulos Anastasios,
OikonomopoulosZachos Christos,
Kanatas Athanasios
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.0209
Subject(s) - antenna (radio) , radiation pattern , radiator (engine cooling) , electronic engineering , electrical engineering , passive radiator , dipole antenna , impedance matching , engineering , electrical impedance , computer science , telecommunications , antenna efficiency , aerospace engineering
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.