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ANALYSIS AND DESIGN OF WIDEBAND PLANAR YAGI- AND BI-YAGI ARRAYS WITH PHOTONIC BAND GAP

By M. M. Abdel-Razzak

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Abstract:
In this work, the analysis and design of wideband microstrip yagi and bi-yagi antenna arrays with photonic band gap (PBG) is presented. By using the bi-yagi planar array, a high directive gain and a high frontto-back ratio are achieved in comparison with that of the single microstrip yagi structure. The current distribution, the return loss, the radiation pattern, and the input impedance are calculated. For a single yagi, wide bandwidth up to 12.81% at 10.15 GHz is obtained. However, a high directive gain is achieved with the bi-yagi. The PBG structures force the antennas to have stop band at the higher end of the operating band. In addition, it increases the front-to back (F/B) ratio. The finite difference time domain (FDTD) with the perfect matched (PML) and a numerical package based on the method of moment (MOM) are used in the present analysis and design. A closed form based on an approximate equivalent circuit is used to get approximate dimensions of the PBG structures.

Citation:
M. M. Abdel-Razzak, "Analysis and design of wideband planar yagi- and BI-yagi arrays with photonic band gap," Progress In Electromagnetics Research C, Vol. 19, 15-24, 2011.
doi:10.2528/PIERC10102806
http://www.jpier.org/pierc/pier.php?paper=10102806

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