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Progress In Electromagnetics Research
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AN EQUIVALENT CIRCUIT MODELING METHOD FOR ULTRA-WIDEBAND ANTENNAS

By Y. Wang, J. Li, and L.-X. Ran

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Abstract:
This paper presents an effective modeling methodology for Ultra-wideband (UWB) antennas. The methodology is based on augmenting an existing narrow-band model with a macro-model while simultaneously perturbing component values of the narrow-band model. The narrow-band model is an empirical-based circuit and the macro-model described by rational functions is determined using data fitting approaches. The perturbation of component values of the narrow-band model is achieved by adjustments in SPICE. This method is demonstrated on the example of a 2.5 cm dipole antenna and a circular disc monopole antenna for UWB systems. Simulation results show that this methodology is effective over a wide bandwidth and suitable for modeling most UWB antennas.

Citation:
Y. Wang, J. Li, and L.-X. Ran, "An Equivalent Circuit Modeling Method for Ultra-Wideband Antennas," Progress In Electromagnetics Research, Vol. 82, 433-445, 2008.
doi:10.2528/PIER08032303
http://www.jpier.org/PIER/pier.php?paper=08032303

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