Abstract
Leaky-wave antennas (LWAs), which exploit traveling waves with phase velocity greater than the speed of light, have attracted much attention for their miniaturizability and easy fabrication. However, the polarization states of leaky-wave radiation are generally hard to design at will. This study presents a spoof-surface-plasmon waveguide with bilateral tilted grooves to tailor the polarization of its emission. The design is simple and feasible for realizing arbitrary polarization of leaky waves, just by changing the relative displacement of grooves on either side of the waveguide, and is expected to impact advanced microwave circuits and antennas.
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