Antenna performance measurement and measurement of electromagnetic interference Also used as an electromagnetic anechoic chamber

摘要

1. The technical field to which the invention described in the claims belongs;Antenna performance measurement and measurement of electromagnetic interference Also used as an electromagnetic anechoic chamber;2. Technical challenges to be solved by the invention;An object of the present invention is to provide an electromagnetic wave anechoic chamber for measuring an antenna performance and measuring an electromagnetic wave interference and for measuring an antenna performance and an electromagnetic interference .;3. The point of the solution of the invention;The present invention relates to a portable information terminal, comprising: a main body having a closed space for shielding electromagnetic waves, an opening / closing door mounted on one side thereof, a depression formed at a predetermined position on one side of the bottom surface, A first radio wave absorber mounted on ceilings and oblique sides excluding a bottom surface of the main body; A grounding means mounted on a bottom surface of the main body and selectively openable and closable; And an antenna including a second radio wave absorber placed on the grounding means and detachable according to a required measurement environment, and an electromagnetic anechoic chamber for both electromagnetic interference measurement.;4. Important Uses of the Invention;And the requirement for the measurement of the antenna performance and the measurement of the electromagnetic interference can be formed in a single electromagnetic wave reflecting room.