Miniature radiation pattern reconfigurable antenna for 2.4 GHz band

Reconfigurable antennas offer the possibility of changing characteristics over time to maintain a high quality wireless communications link as the propagation environment changes. Radiation pattern reconfigurable antennas are of particular interest because manipulation of the radiation pattern enables avoidance of noise source, improved security by directing signals only toward intended users, avoidance of signal fades, improved beam steering capability of phased array systems, and increased diversity gain [1]. Various designs have been proposed [2] to achieve radiation pattern and frequency reconfiguration.