Design and Manufacture of a Broadband CATR Reflector System for MM-Wave Bands

Serrated reflector systems are widely used in compact range antenna measurement (CATR) setups. Besides maximizing the size of the reflector, serrations offer a solution for improving the size and quality of quiet zones. In contrast to rolled edge reflector, serrations offer a low radiation percentage redirected to the walls which can be critical for small size chambers with suboptimal size absorbent material. Simulation of the quiet zone's behaviour has been done with PO and PTD. An iterative manufacturing procedure for reducing surface errors on the reflector is shown. Measured fabrication imperfections and constrains have been introduced into the simulation model to illustrate their effect and ensure the correct behaviour of the system.