Metasurface-Covered Planar Endfire Antenna With Vertical Polarization

A trapped wave-based solution to design compact planar vertically polarized (VP) endfire antennas is proposed in this communication. By placing a four-element series-fed magnetic dipole array with an interspacing of half wavelength within a dual-layer metasurface and loading shorting pin arrays at two edges of the metasurface, the VP radiation is realized in a wide impedance band. In addition, the antenna profile can be further reduced by half according to the electric field distribution within the metasurface. Finally, a VP endfire antenna with a reflection bandwidth of 4.3-5.4 GHz, a peak gain of 9.8 dBi, and a low total profile of 0.065 lambda(0) (lambda(0) is the free-space wavelength at the center operation frequency) is designed for the validation. The proposed antenna can be used for some wireless communication systems on or near the ground plane, such as the car roof-mounted terminal for vehicle-to-road side unit/base station communication.

Automated summary

A trapped wave-based solution is proposed to design compact planar vertically polarized (VP) endfire antennas. By using a four-element series-fed magnetic dipole array with half wavelength interspacing in a dual-layer metasurface and loading shorting pin arrays at the metasurface edges, the VP radiation is achieved in a wide impedance band. Furthermore, the antenna profile can be further reduced by half based on the electric field distribution within the metasurface. A VP endfire antenna is designed and validated with a reflection bandwidth of 4.3-5.4 GHz, a peak gain of 9.8 dBi, and a low total profile of 0.065 lambda(0) (lambda(0) is the free-space wavelength at the center operation frequency). This antenna can be applied in wireless communication systems on or near the ground plane, such as car roof-mounted terminals for vehicle-to-road side unit/base station communication.