Journal
IET MICROWAVES ANTENNAS & PROPAGATION
Volume 12, Issue 3, Pages 390-394Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-map.2017.0319
Keywords
microstrip antennas; resonators; metamaterial antennas; antenna radiation patterns; microswitches; current density; pattern controlled frequency tunable metamaterial microstrip antenna; multiple split ring resonator; metamaterial-inspired microstrip patch antenna; frequency spectrum tuning; beam radiation tuning; three-ring square split ring resonator; radiofrequency microelectromechanical-system switch; reconfigurable antenna; SRR RF MEMS switch; reconfigurable reflection coefficient; current density performance; C-band long-distance radio telecommunication
Funding
- Office of Research and Economic Development at the University of Nebraska-Lincoln
- Marwadi Education Foundation Group of Institutions
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We propose a reconfigurable design of a metamaterial-inspired microstrip patch antenna, capable of tuning the frequency spectrum and beam radiation. The metamaterial component is composed of a three-ring square split ring resonator (SRR) loaded in the antenna's substrate. Radiofrequency (RF) micro-electro-mechanical-system (MEMS) switches are added in the gap of the proposed SRR to achieve frequency and radiation tuning in the performance of the microstrip patch antenna. The proposed reconfigurable antenna can be tuned to different frequencies depending on the operation states (no switching, one switch on, two switches on, and three switches on) of the SRR RF MEMS switches. The beam radiation can also be changed by setting in the on' state the SRR switches. Beam width and beam angle can be independently tuned depending on the four different switching states. The proposed pattern controlled and frequency tunable metamaterial antenna demonstrates efficient reconfigurable reflection coefficient, radiation pattern, and current density performance. The designed antenna will be applicable to C-band long-distance radio telecommunications.
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