Abstract
The liquid crystal holographic antenna is a high-gain antenna that can obtain good directivity. Moreover, the dielectric constant of the liquid crystal can be changed by adjusting the bias voltage of the liquid crystal material to realize the beam scanning characteristics of the liquid crystal holographic antenna. However, because there are too many antenna elements in a holographic antenna, it is very difficult to apply a bias voltage to each element individually. This paper adopts a new unit structure [1], under the premise of not affecting the performance of the antenna, the metal patch of all the units can be connected together, the entire antenna only needs one bias voltage to realize the beam of the liquid crystal holographic antenna scanning. Based on this antenna unit structure, this paper designs an antenna that works at 27GHz. The main beam can be scanned from Phi=0°, Theta=40° to Phi=25°, Theta=32°, and the gain is 16dBi.
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