Single-Layer Large Frequency-Ratio Dual-Band Vivaldi-Leaky-Wave Embedded Antenna for Coverage Enhancement
In this letter, a single-layer shared-aperture Vivaldi-leaky-wave embedded antenna (V-LWEA) for coverage enhancement is presented. To mitigate the open-stopband effect and increase leakage rate in high-band (HB), periodic elliptical-slot unit cells are introduced, which facilitate single-port excitation without bulky a...