UWB Electric and Magnetic Monopole Antennas

Xiaodong Chen, Jianxin Liang, Pengcheng Li, Choo C. Chiau

Abstract

This paper summarizes our recent advances in
antenna designs for ultra wideband (UWB) applications. Two
types of monopoles are studied and developed in our research
group. The first type belongs to the electric monopole with a
circular disc fed by three different feeding structures. The second
type is the magnetic monopole with an elliptical slot. The
performances of these two types of antennas are evaluated in both
frequency and time domains. The important design parameters
for achieving optimal operations are also analyzed. It is shown
that both electric and magnetic monopoles can provide ultra wide
bandwidth with nearly omni-directional radiation patterns over
the entire frequency band. In addition, the impulse responses of
the selected antennas are shown to correspond well to the
frequency domain characteristics.

Keywords

Ultra-wide-band (UWB), electric monopole, magnetic monopole, circular disc monopole, printed antenna, slot antenna, coplanar waveguide

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