Mutual Coupling Effects in Space-Filling-Curve Antennas.

In this talk, we address another problem related to the space-filling-curve antennas, namely, the problem of mutual coupling between two such antennas. We take two identical Hilbert antennas that are located near each other in one of the three configurations of (a) collinear, (b) side-by-side, and (c) stacked (Fig. l), and using a method-of-moment based numerical simulation code, we analyze the maximum coupling [lo] between these two antennas. We repeat our analysis for the two adjacent Peano antennas (See Fig. 2). We then compare the results of our analysis for these two classes of antennas with that of the mutual coupling for simple linear resonant ( /2 ) dipoles in collinear, side-by-side, and stacked configurations. Our pre6minw results show that for these antennas the mutual coupling, in the collinear configuration is higher than thal: of the simple resonant dipoles the same configuration. For the side-by-side and stacked configurations, mutual coupling for these space-filling curve antennas is somewhat similar to the case of resonant dipoles. However, these antennas occupy much smaller footprints, and thus they can be packed more densely in the collinear, 2-D planar or specialized aperiodic array configurations. The effect of proximity of these antennas on matching of these antennas is also being analyzed. Various results of our numerical study on the mutual coupling between these antennas will be given in the presentation, and salient features and physical insights into the results will be discussed.

Main Author: Zhu, Jinhui.
Other Authors: Hoorfar, Ahmad., Engheta, Nader.
Language: English
Published: 2003
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