Frequency reconfigurable multiband planar antenna with wide tuning frequency range
Résumé
In this paper, a frequency reconfigurable triband antenna was designed for multi-standards wireless applications. The reference antenna was optimized to radiate at F1=2.45 GHz. Then, we integrated a lumped capacitor and a varactor diode in two opposite corners of the square patch. Depending on the reverse bias voltage V applied to the varactor diode, both generated resonant frequencies F2 and F3 were electrically controlled. When changing V from 0 to 8v, F2 shifts from 0.64 to 1.42GHz and F3 still changeless. Then, beyond V=8v, F2 disappears and F3 becomes easily reconfigurable, thus enhancing the frequency agility capabilities of the proposed antenna. A wide tuning frequency range from 0.64 to 2.1 GHz was obtained while the operating frequency of the reference antenna F1=2.45 GHz still maintained. A prototype was manufactured and characterized. Related results were presented and discussed. © 2016 European Association of Antennas and Propagation.
Mots clés
Antennas
Capacitance
Diodes
Frequency agility
Natural frequencies
Reconfigurable hardware
Tuning
Varactors
Wireless telecommunication systems
Frequency reconfigurable antenna
Multiband antennas
Multiband planar antennas
Operating frequency
Reverse bias voltage
Varactor diodes
Wide tuning
Wireless application
Microwave antennas