Antenna Measurement and Design
Ulf Persson, Pierre Keller
Master Thesis, Uppsala University, September 1998
- An anechoic chamber, a turntable and two different reference horn antennas
for 1.8 and 5.2 GHz have been designed and the designing process is described.
An xy-table has been used for both reactive and radiating nearfield measurements.
Software for controlling the turntable and xy-table has been written. A
nearfield to farfield transformation program made in MATLAB has been written.
This program is useful for antenna pattern measurement, when the anechoic
chamber dimensions are insufficient. Antenna characteristics have been
measured in reactive nearfield, radiating nearfield and in the farfield.
Comparison between antenna pattern after nearfield to farfield transformation
and antenna pattern measured in the farfield shows good correlation.