A Low-Profile Printed Drop-Shaped Dipole Antenna for Wide-Band Wireless Applications
2011; IEEE Antennas & Propagation Society; Volume: 59; Issue: 10 Linguagem: Inglês
10.1109/tap.2011.2163767
ISSN1558-2221
AutoresGiovanni Cappelletti, Diego Caratelli, Renato Cicchetti, Massimiliano Simeoni,
Tópico(s)Microwave Engineering and Waveguides
ResumoA class of printed antipodal drop-shaped dipole antennas for wideband wireless communication systems is presented. A suitable shaping of the feeding lines and radiating arms is adopted to achieve an operating bandwidth larger than 10 GHz useful to meet the requirements of several wireless communication standards. A thin, low permittivity dielectric substrate is used to reduce the excitation of surface waves which are responsible for a degradation of the radiative characteristics. The proposed antenna structures present a reduced occupation volume which allows an easy integration in mobile terminals, as well as in radio base stations. A locally conformal FDTD numerical procedure has been adopted to analyze the radiating structures. An equivalent circuit, useful to predict the frequency-domain behavior of the scattering parameters of a two-element array formed by the proposed structures, is also presented. The numerical results concerning the antenna parameters are found to be in good agreement with the experimental measurements.
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