Phase shifting apparatus and antenna

Abstract

A phase shifting apparatus includes N phase shifters; where N≥2 and N is an integer. Each phase shifter includes a first dielectric substrate, a second dielectric substrate, a tunable dielectric layer, a first electrode layer, and a second electrode layer. The first dielectric substrate and the second dielectric substrate are opposite to each other, the tunable dielectric layer is between the first dielectric substrate and the second dielectric substrate, the first electrode layer is on a side of the first dielectric substrate close to the tunable dielectric layer, and the second electrode layer is on a side of the second dielectric substrate close to the tunable dielectric layer. The N phase shifters are sequentially stacked, and orthographic projections of regions defined by first electrode layers and second electrode layers of at least two of the N phase shifters on a plane where the first dielectric substrate is located are overlapped.

Dependencies are inferred from the claim text.