Abstract:
Various examples of the present invention relate to a device and a method for improving wireless communication performance in an electronic device. The electronic device comprises multiple antennas, a communication circuit connected to the multiple antennas, a connector, and at least one processor, wherein the processor checks whether a wired cable is connected through the connector and, if the wired cable is connected through the connector, can perform control such that communication using the multiple antennas corresponding to the connection of the wired cable is performed. Other examples can be possible.
Abstract:
An optical module for surface inspection includes a first light source unit that illuminates a substrate with first light produced by a first light source and a first beam splitter that changes the path of the first light, a second light source unit that illuminates the substrate with second light polarized in a first direction, a direction of polarization changing unit that illuminates the substrate with the third light polarized in a second direction perpendicular to the first direction, and a detection unit that detects fourth light which is a product of the first light reflecting from the substrate, fifth light which is a product of the second light scattered from the substrate, and sixth light which is a product of the third light scattered from the substrate. The third light is produced by changing the direction of polarization of the second light reflected from the inspected substrate.