Patent ID: 9258067
Filing Date: 2016-02-09
CPC Classification: G01R,H04B

Claim Text:
1. An apparatus for measuring the performance of a device under test, comprising: a chamber defining an internal cavity therein, adapted to enclose the device under test, and including walls of an inwardly reflective material, rendering the walls reflective to electromagnetic waves, thereby simulating a multi-path environment; at least one moveable object within the cavity; at least one chamber antenna arranged in the cavity; a measuring instrument connected to the device under test and the chamber antenna, for measuring the transmission between them; and a shield arranged between the device under test and the chamber antenna(s), such that a line of sight between the device under test and the chamber antenna(s) is obscured by the shield, wherein the shield has a width extension between two opposing side walls of the chamber in the range 30-70% of the distance between said opposing side walls, and a height extension between a roof and a floor of the chamber in the range 30-70% of the distance between said floor and roof.