Title :
A method to measure the aperture field and experimentally determine the near-field phase center of a horn antenna
Author :
Odendaal, Johann W. ; Pistorius, Carl W I
Author_Institution :
Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa
fDate :
2/1/1993 12:00:00 AM
Abstract :
A method whereby the aperture field distribution of a horn antenna can be measured is proposed. The method is based on the measurement of the scattered field of a small conducting sphere in the aperture. The position of the phase center of the aperture field is calculated using the measured phase distribution of the field in the aperture via a simple type of convolution. In principle, the method is suited to determine the field distribution of other types of apertures illuminated by an electromagnetic field
Keywords :
antenna radiation patterns; field strength measurement; horn antennas; microwave measurement; X-band; antenna radiation patterns; aperture field; conducting sphere; electromagnetic field; field distribution; horn antenna; measured phase distribution; near-field phase center; scattered field; vector network analyser; Antenna feeds; Antenna measurements; Aperture antennas; Electromagnetic fields; Electromagnetic measurements; Electromagnetic scattering; Horn antennas; Phase measurement; Statistical analysis; Time measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
