Analysis and Experiments Concerning the Performance and Calibration of Compact Antenna-Test Ranges

摘要

The thesis deals with some aspects concerning the performance and calibration of compact antenna-test ranges (CATR's). Chapter 1 provides an introduction on basic antenna measurements concepts and gives a review of several antenna measurement methods. Special attention is paid to the two-reflector CATR system. Chapter 2 describes a method to predict the test zone field distribution of a CATR with serrated reflector edges. In addition, the far-field behavior of uniformly illuminated and serrated aperture distributions is investigated. Subsequently, chapter 3 gives an analysis of a non-ideal measurement situation in terms of plane-wave spectra. These results are applied in the chapters 4 and 5. In chapter 4, a new method to evaluate the test-zone field of a CATR is studied. Finally, in chapter 5, a calibration method for antenna measurements on a CATR is proposed. Simulations and a few one-dimensional measurements show the feasibility of the method.