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Electrical and Computer Engineering

Selected Works

2008

Bandwidth

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Bandwidth, Cross-Polarization, And Feed-Point Characteristics Of Matched Hilbert Antennas, Jinhui Zhu, Ahmad Hoorfar, Nader Engheta Jan 2008

Bandwidth, Cross-Polarization, And Feed-Point Characteristics Of Matched Hilbert Antennas, Jinhui Zhu, Ahmad Hoorfar, Nader Engheta

Nader Engheta

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 …


Dual Band Dual Polarized Antenna With High Efficiency For Base Transceiver Stations, F. H. Kashani, M. Shahpari, Hossein Ameri Mahabadi Jan 2008

Dual Band Dual Polarized Antenna With High Efficiency For Base Transceiver Stations, F. H. Kashani, M. Shahpari, Hossein Ameri Mahabadi

Hossein Ameri Mahabadi

In this paper new array element for use in dual band dual polarized antenna will be introduced that has high efficiency (more than 95%) and has high isolation in both 900MHz and 1800MHz bands. Also radiation pattern of this antenna is according to IEC recommendation.