Ultra-wideband (UWB) communications technology
increasingly plays an important role in modern communications
systems. The complex antenna transfer function (CATF) of an
UWB antenna provides valuable information that can be used for
better UWB channel and communication system designs.
Currently only the two-antenna and three-antenna measurement
techniques are used to measure the transfer function and impulse
response of UWB antennas. In this paper a modified version of
the gain-transfer method is presented to enable the
characterization of UWB antennas using a compact antenna test
range facility (CATR). A double-ridged guide horn (DRGH)
antenna is used as UWB transfer-standard and the CATF of the
transfer-standard is determined a priori using full-wave
simulations. The gain-transfer method to measure the CATF of
UWB antennas in a CATR is illustrated with two test cases. In
the first test case the measured CATF of an ETS-LINDGREN
DRGH antenna was verified with numerical data from a FEKO
model of the antenna. The second case compares the CATF of an
UWB circular disc monopole antenna measured in a CATR to
measured data using
Ultra wideband (UWB) technology plays a significant role in wireless communication. The
complex antenna transfer function (CATF) of an UWB antenna provides important
information required for better channel designs and ...
Mayhew-Ridgers, Gordon(University of Pretoria, 2005-09-21)
The principal contributions of this study include the development of a new capacitive feeding mechanism for wideband probe-fed microstrip patch antennas as well as the implementation of a spectral-domain moment-method ...
Jacobs, Ockert Botha; Odendaal, J.W. (Johann Wilhelm); Joubert, Johan(Institute of Electrical and Electronics Engineers, 2013)
We present a quad-ridge horn antenna as a feed for
a reflector antenna for use in radio astronomy applications. The
antenna uses elliptically shaped sidewalls to limit the variation of
beamwidth over a wide frequency ...