Title :
Measuring the impedance of balanced antennas by an S-parameter method
Author :
Meys, Rene ; Janssens, Frederic
Author_Institution :
ULB CP165, Brussels, Belgium
fDate :
12/1/1998 12:00:00 AM
Abstract :
The input impedance of a balanced antenna is conventionally measured by using a balun that forces opposite currents in each part of the radiator. In this paper, balanced antennas are viewed as two-ports, the S-parameters of which are determined by standard network-analyzer techniques. Simple formulas then lead to the differential input impedance. The method is illustrated by measurements on a dipole antenna, which are compared to the results for monopoles over a ground plane
Keywords :
S-parameters; antenna testing; baluns; dipole antennas; electric immittance measurement; monopole antennas; S-parameter method; balanced antennas; balun; differential input impedance; dipole antenna; formulas; ground plane; input impedance measurement; monopoles; network-analyzer techniques; radiator; Antenna measurements; Antennas and propagation; Book reviews; Calibration; Current measurement; Differential equations; Dipole antennas; Impedance matching; Impedance measurement; Scattering parameters;
Journal_Title :
Antennas and Propagation Magazine, IEEE
