Beamforming device, calibration method and calibration system for the same

#The present disclosure relates to a beam forming device, a calibration method and a calibration system for the same, and more particularly to a beam forming device, a calibration method and a calibration system for the same capable of calibrating phase differences between antenna modules.

#In the field of millimeter wave communications, path loss associated with an antenna module of a beamforming device is much greater than similar devices with lower operating frequencies. Beamforming technology is commonly used to increase the communication range. The most common architecture utilizes one baseband module to control a plurality of antenna modules. In high-frequency applications, due to the small wavelength, it is difficult to meet equipment requirements during manufacturing. For example, a wavelength is only about 5 mm at an operating frequency of 60 GHz. This means that whenever a path change of 0.1 mm occurs, a phase difference of 36 degrees will be caused between the antenna modules.

#When there is a phase difference between the antenna modules, the phase difference will result in a lower equivalent isotropically radiated power (EIRP) during beamforming, and even lead to poor side-lobe levels (SLL), thereby causing an actual beamforming pattern to differ from an ideal beamforming pattern by a deviation.

#The present disclosure will become more fully understood from the following detailed description and accompanying drawings.

#FIG. 1 is a block diagram of a calibration system for a beamforming device according to an embodiment of the present disclosure.

#FIG. 2 is a schematic diagram of architecture of a beamforming device according to an embodiment of the present disclosure.

#The present disclosure is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Like numbers in the drawings indicate like components throughout the views. As used in the description herein and throughout the claims that follow, unless the context clearly dictates otherwise, the meaning of “a”, “an”, and “the” includes plural reference, and the meaning of “in” includes “in” and “on”. Titles or subtitles can be used herein for the convenience of a reader, which shall have no influence on the scope of the present disclosure.

#The terms used herein generally have their ordinary meanings in the art. In the case of conflict, the present document, including any definitions given herein, will prevail. The same thing can be expressed in more than one way. Alternative language and synonyms can be used for any term(s) discussed herein, and no special significance is to be placed upon whether a term is elaborated or discussed herein. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms is illustrative only, and in no way limits the scope and meaning of the present disclosure or of any exemplified term. Likewise, the present disclosure is not limited to various embodiments given herein. Numbering terms such as “first”, “second” or “third” can be used to describe various components, signals or the like, which are for distinguishing one component/signal from another one only, and are not intended to, nor should be construed to impose any substantive limitations on the components, signals or the like.

#FIG. 1 is a block diagram of a calibration system for a beamforming device according to an embodiment of the present disclosure. Reference is made to FIG. 1, a first embodiment of the present disclosure provides a calibration system 1, which includes a beamforming device 10, a computing device 12 and a receiver 14.