On Design Aspects of Compact Antenna Test Ranges for Operation Below 1 GHz

摘要

Compact Antenna Test Ranges are eminently suitable for obtaining the far-field patterns of various types of antennas provided that the frequency is not too low. Typically, a low frequency limit of 1 or 2 GHz is realizable. There are, however a number of important applications between 500 and 1000 MHz for antenna diameters between 1 and 3 meters. The far field distance R = 2D~2/#lambda# is just too large for an indoor far-field range. It is generally accepted at present that a good solution for an indoor range for these kind of measurements is very difficult to realize.