Articles
Small Printed Ultra-Wideband Antenna With Reduced Ground Plane Effect
February 17, 2010
•Application Note: Small Printed Ultra-Wideband Antenna With Reduced Ground Plane Effect
By EM Software & Systems - S.A. (Pty) Ltd.
An UWB patch antenna is modeled in FEKO with FEM modeling of substrate, encasing air substrate and S-parameter extraction from a source in the FEM region. Results are compared with literature.
A small printed UWB microstrip patch antenna is proposed by Chen et.al. in . The ground plane effect is reduced in the design to result in ultra wide-band (UWB) antenna performance. The design is based on Rogers 4003 substrate. A FEKO model was created for the antenna with a FEM region being used to model the substrate. In order to minimize the coupling for the FEM region to the free space MoM region the entire antenna is encased in a FEM dielectric region with the dielectric properties of air. An impressed current source is used to feed the antenna inside the FEM region and to extract S-parameters for the antenna at this feed point. Figure 1 presents the design specification from and the resulting FEKO model.
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