Perturbation analysis of a planar periodic leaky-wave antenna fed by surface waves

Samir F. Mahmoud; Symon Podilchak; Yahia M. M. Antar; Al P. Freundorfer

doi:10.1109/LAWP.2011.2123073

Perturbation analysis of a planar periodic leaky-wave antenna fed by surface waves

Samir F. Mahmoud^*, Symon Podilchak, Yahia M. M. Antar, Al P. Freundorfer

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

We consider a printed leaky-wave antenna composed of a grounded substrate topped by a periodic metallic screen or grating. The antenna is fed by the TM surface-wave mode that is launched by an array of slots in the ground plane. The leaky-wave attenuation and phase constants are derived using a simple but accurate field perturbation approach. The radiation power, directivity, and beam patterns are also deduced. Numerical results show that, depending on the screen period and the substrate height, there is an optimum frequency range for maximum radiative power. In addition, calculated results are also in agreement with simulations and measurements for some recently designed and fabricated structures.

Original language	English
Pages (from-to)	174-178
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	10
DOIs	https://doi.org/10.1109/LAWP.2011.2123073
Publication status	Published - 2011

Keywords

Leaky waves (LWs)
leaky-wave antenna (LWA)
surface waves (SWs)
surface-wave launcher (SWL)
OPTIMIZATION

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10.1109/LAWP.2011.2123073

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title = "Perturbation analysis of a planar periodic leaky-wave antenna fed by surface waves",

abstract = "We consider a printed leaky-wave antenna composed of a grounded substrate topped by a periodic metallic screen or grating. The antenna is fed by the TM surface-wave mode that is launched by an array of slots in the ground plane. The leaky-wave attenuation and phase constants are derived using a simple but accurate field perturbation approach. The radiation power, directivity, and beam patterns are also deduced. Numerical results show that, depending on the screen period and the substrate height, there is an optimum frequency range for maximum radiative power. In addition, calculated results are also in agreement with simulations and measurements for some recently designed and fabricated structures.",

keywords = "Leaky waves (LWs), leaky-wave antenna (LWA), surface waves (SWs), surface-wave launcher (SWL), OPTIMIZATION",

author = "Mahmoud, {Samir F.} and Symon Podilchak and Antar, {Yahia M. M.} and Freundorfer, {Al P.}",

year = "2011",

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language = "English",

volume = "10",

pages = "174--178",

journal = "IEEE Antennas and Wireless Propagation Letters",

issn = "1536-1225",

publisher = "IEEE",

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T1 - Perturbation analysis of a planar periodic leaky-wave antenna fed by surface waves

AU - Mahmoud, Samir F.

AU - Podilchak, Symon

AU - Antar, Yahia M. M.

AU - Freundorfer, Al P.

PY - 2011

Y1 - 2011

N2 - We consider a printed leaky-wave antenna composed of a grounded substrate topped by a periodic metallic screen or grating. The antenna is fed by the TM surface-wave mode that is launched by an array of slots in the ground plane. The leaky-wave attenuation and phase constants are derived using a simple but accurate field perturbation approach. The radiation power, directivity, and beam patterns are also deduced. Numerical results show that, depending on the screen period and the substrate height, there is an optimum frequency range for maximum radiative power. In addition, calculated results are also in agreement with simulations and measurements for some recently designed and fabricated structures.

AB - We consider a printed leaky-wave antenna composed of a grounded substrate topped by a periodic metallic screen or grating. The antenna is fed by the TM surface-wave mode that is launched by an array of slots in the ground plane. The leaky-wave attenuation and phase constants are derived using a simple but accurate field perturbation approach. The radiation power, directivity, and beam patterns are also deduced. Numerical results show that, depending on the screen period and the substrate height, there is an optimum frequency range for maximum radiative power. In addition, calculated results are also in agreement with simulations and measurements for some recently designed and fabricated structures.

KW - Leaky waves (LWs)

KW - leaky-wave antenna (LWA)

KW - surface waves (SWs)

KW - surface-wave launcher (SWL)

KW - OPTIMIZATION

U2 - 10.1109/LAWP.2011.2123073

DO - 10.1109/LAWP.2011.2123073

M3 - Article

SN - 1536-1225

VL - 10

SP - 174

EP - 178

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

ER -

Perturbation analysis of a planar periodic leaky-wave antenna fed by surface waves

Abstract

Keywords

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