Phase-shift unit, phase shifter and antenna

#The present disclosure relates to the technical field of display technology, and particularly, to a phase-shift unit, a phase shifter and an antenna.

#In existing wireless terminals (such as mobile phone, tablet computer and the likes), a display panel and an antenna are two functional modules independently provided, and are required to be designed and manufactured respectively and finally be assembled. The process is relatively complicated. Moreover, almost of the antennas in the terminals are omnidirectional antennas which have high power consumption and thus affect duration performance to a large extent.

#A smart antenna is an antenna array which is capable of determining spatial information of a microwave signal by means of intelligent algorithm to achieve tracing and location of microwave signal source. By means of tracing and filtering of microwave signal, strength of microwave signal can be greatly improved, proportion of microwave signal interruption can be reduced, and energy loss can be reduced.

#FIG. 1 is a structural schematic view showing a smart antenna provided in related art;

#FIG. 2 is a perspective schematic view showing a phase-shift unit according to an embodiment of the present disclosure;

#FIG. 3(a) and FIG. 3(b) are sectional schematic views showing the phase-shift unit of FIG. 2, respectively;

#In order to provide a more clear understanding of objects, technique solutions and advantages of the present disclosure, the present disclosure will be further described hereinafter in detail with reference to the attached drawings. Obviously, the described embodiments are only some of embodiments of the present disclosure, instead of all of the embodiments of the present disclosure. For those skilled in the art, all other embodiments achieved by referring to the embodiments of the present disclosure without involving any inventive steps fall into the scope of the present disclosure.

#Phased-array antenna is a smart antenna which achieves adjustment of beam direction by controlling a feed phase of a microwave signal. Referring to FIG. 1, after a microwave signal enters a phase-shift unit 01 through a feed network, phase shift capability of each phase-shift unit 01 is adjusted so that the microwave signal arriving at each radiation unit 02 can generate a corresponding phase difference, equiphase surface deflects, and also radiation direction varies accordingly. As a result, radiation directional pattern of the microwave signal can be controlled as long as a phase shift amount of the phase-shift unit 01 is adjusted, which achieves real-time tracing of the microwave signal.

#The phase-shift unit, the phase shifter and the antenna provided according to embodiments of the present disclosure use liquid crystals as a transmission medium of an electromagnetic wave signal (taking a microwave signal as an example) and achieves phase control of the microwave signal by deflection of the liquid crystals. Moreover, the phase-shift unit provided according to embodiments of the present disclosure has good compatibility with a display panel.