Research papers

The design of a sector-beam antenna is described. The azimuth and elevation patterns are subject to stringent requirements on gain and isolation. A PO based synthesis method is applied to generate a shaped reflector surface that radiates the desired pattern…

A comparison of the Fast Fourier Transform (FFT) and direct numerical integration to solve the PO integral is presented, with special emphasis on the achieved accuracy and the CPU time consumption. The concept of second order FFT is introduced. It…

Compact ranges based on reflector technology may be based on different designs: single offset reflec- tor, dual offset reflector compensated for cross polarisation or an offset dual reflector system consist- ing of two orthogonal parabolic cylinders. In all cases it…

Microwave antenna measurements seek to determine the response of an Antenna Under Test (AUT), when it is illuminated by a uniform Plane Wave. The requirement of a uniform Plane Wave illumination can be achieved by utilising a CATR. The potentially…

Modelling of the field in the quiet zone (QZ) of a compact range is a difficult task since the edges of the range reflectors are designed not to radiate into the quiet zone. As a consequence the edges of the…