The Single-Plane Collimating Range

An Artist's Rendering of the EMAC Anechoic Chamber.

The March Microwave-designed Single-Plane Collimating Range (SPCR) is a curved, highly polished metal reflector that reshapes the spherical phasefronts produced by the system's feed into high-quality cylindrical wavefronts in the test region. Cylindrical wave measurements are then transformed into the desired plane wave results via computer software. The primary advantage of the SPCR over conventional, fully collimating CATRs is a much larger quiet zone in the horizontal plane. ASU has the distinction of being the first to implement this cylindrical wave range configuration.

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