A Polarization-Reconfigurable Dipole Antenna Using Polarization Rotation AMC Structure
PROJECT TITLE :
A completely unique polarization-reconfigurable mechanism primarily based on a polarization-rotation artificial magnetic conductor (PRAMC) structure is proposed. A new polarization-reconfigurable antenna is meant by combining a PRAMC-based mostly multipolarized dipole antenna with a RFIC switch-primarily based network, in which three polarization states of right-handed, left-handed circular polarization (RHCP, LHCP) and $+forty five^circ$ linear polarization (LP) will be realized by controlling the dc bias of the switches accordingly. The multipolarization antenna is well designed for providing three polarization states. A massive three-dB axial ratio (AR) bandwidth of fifteen.5%, a good three-dB AR beamwidth for CP states and a large cross-polarization isolation of additional than 50 dB for LP state along with a broad impedance bandwidth of twenty.5% are obtained. A switch network is used to get 3 feeding modes, and therefore the performance of the RF-integrated circuit (RFIC) switches is experimentally verified. A prototype of the proposed polarization-reconfigurable antenna is fabricated and tested. Sensible agreements between the measured and simulated results are observed, which indicates sensible performances of the proposed antenna.
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