Departmental Papers (ESE)


In this work, we have applied a moment-method-based simulation code to perform a detailed parametric study of the bandwidth, cross-polarization level, and the feed location characteristics of the matched Hilbert antenna. It is shown that a properly chosen off-center near-the-end feed point may provide an approximate 50-Ω real input impedance at the fundamental resonant frequency. The role of different iteration order for Hilbert antennas, approximately matched to 50-Ω line, on the bandwidth and cross-polarization level of such antennas are investigated numerically. As was shown by Vinoy et al. the radiation patterns resemble those of a linear dipole and for a fixed-area-matched Hilbert antenna, the resonant frequency can be lowered by increasing the iteration order n. However, for such matched antennas, the bandwidth for VSWR < 2 will be decreased and the cross-polarization level may be different for the higher iteration-order antennas.

Document Type

Journal Article

Date of this Version



Copyright Year IEEE. Reprinted from IEEE Antennas and Wireless Propagation Letters, Volume 2, Issue 1, January 2003, pages 2-5.
Publisher URL:

This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


Bandwidth, Hilbert antenna, input impedance, matched antenna, miniaturized antenna, small antenna



Date Posted: 05 November 2004

This document has been peer reviewed.