AN EQUIVALENT CIRCUIT MODELING METHOD FOR ULTRA-WIDEBAND ANTENNAS

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.

[1]  A. Weisshaar,et al.  A new circuit augmentation method for modeling of interconnects and passive components , 2006, IEEE Transactions on Advanced Packaging.

[2]  Ali M. Niknejad,et al.  Circuit modeling methodology for UWB omnidirectional small antennas , 2006, IEEE Journal on Selected Areas in Communications.

[3]  Ning Yuan,et al.  Accurate Modeling of Monopole Antennas in Shielded Enclosures with Apertures , 2008 .

[4]  Shubhendu Joardar,et al.  An Innovative Portable Ultra Wide Band Stereophonic Radio Direction Finder , 2008 .

[5]  Xiao Dong Chen,et al.  Printed circular ring monopole antennas , 2005 .

[6]  A. Semlyen,et al.  Rational approximation of frequency domain responses by vector fitting , 1999 .

[7]  L. Akhoondzadeh-Asl,et al.  FREQUENCY AND TIME DOMAIN CHARACTERISTIC OF A NOVEL NOTCH FREQUENCY UWB ANTENNA , 2008 .

[8]  Shubhendu Joardar,et al.  A Novel Method for Testing Ultra Wideband Antenna-Feeds on Radio Telescope Dish Antennas , 2008 .

[9]  A. T. Kalghatgi,et al.  Broadband equivalent circuit of a dipole antenna , 1999 .

[10]  Xiao-wei Shi,et al.  Study on the Impedance-Matching Technique for High-Temperature Superconducting Microstrip Antennas , 2007 .

[11]  Quang M. Tieng,et al.  Equivalent circuit of a dipole antenna using frequency-independent lumped elements , 1993 .

[12]  Gaetano Marrocco,et al.  SIMULTANEOUS TIME-FREQUENCY MODELING OF ULTRA-WIDEBAND ANTENNAS BY TWO-DIMENSIONAL HERMITE PROCESSING , 2007 .

[13]  Ahmed A. Kishk,et al.  ANTENNA MODELING BY INFINITESIMAL DIPOLES USING GENETIC ALGORITHMS , 2005 .

[14]  R M Morey,et al.  Response to FCC 98-208 notice of inquiry in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems , 1998 .

[15]  Shaoqiu Xiao,et al.  PERFORMANCE OF IMPULSE RADIO UWB COMMUNICATIONS BASED ON TIME REVERSAL TECHNIQUE , 2008 .

[16]  Giulio Antonini,et al.  SPICE equivalent circuits of frequency-domain responses , 2003 .

[17]  Weng Cho Chew,et al.  TIME-DOMAIN ULTRA-WIDEBAND MICROWAVE IMAGING RADAR SYSTEM , 2003 .

[18]  P. Werner,et al.  A simple broadband dipole equivalent circuit model , 2000, IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (C.

[19]  Mats Gustafsson,et al.  Bandwidth, Q factor, and resonance models of antennas , 2005 .

[20]  Disala Uduwawala,et al.  Modeling and Investigation of Planar Parabolic Dipoles for GPR Applications: A Comparison with Bow-Tie using FDTD , 2006 .

[21]  Theoretical Modeling of Multi-Sleeve Monopole Antennas , 2001 .

[22]  M. Hamid,et al.  Equivalent circuit of dipole antenna of arbitrary length , 1997 .