A Wideband Dual-Polarized Magneto-Electric Dipole Transmitarray With Independent Control of Polarizations

This communication presents a dual-polarized transmitarray antenna with wide bandwidth and independent beam control for each polarization. A new low-insertion-loss transmitarray element allowing wideband dual-polarized operation is proposed by using magnetoelectric (ME) dipole with shared radiating structure and interleaved orthogonal feeding probes; 1 bit phase adjustment can be realized individually for each polarization with additional freedom in manipulating the cross-polarization over a fractional bandwidth of 23%. Three transmitarrays that achieve possibly different collimated beams and/or cross-polarization manipulation are designed and carried out at millimeter-wave frequencies covering from 23.5 to 32.5 GHz. Measurement results of the prototypes agree reasonably well with simulations, which validates the wideband operation and independent beam controls.

Automated summary

This communication introduces a novel dual-polarized transmitarray antenna that offers wide bandwidth and independent beam control. A new low-insertion-loss transmitarray element is proposed, which utilizes magnetoelectric dipole and orthogonal feeding probes to achieve wideband dual-polarized operation. Three different transmitarrays are designed and tested at millimeter-wave frequencies, demonstrating their ability to produce different collimated beams and manipulate cross-polarization. Measurement results match well with simulations, confirming the wideband operation and independent beam controls.