High-gain patch antennas loaded with high characteristic impedance superstrates

Hussein Attia; Leila Yousefi; Omar Ramahi

doi:10.1109/LAWP.2011.2165196

High-gain patch antennas loaded with high characteristic impedance superstrates

Hussein Attia^*
, Leila Yousefi
, Omar Ramahi

^*Corresponding author for this work

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

32 Scopus citations

Abstract

It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate are determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50% when compared to previous trends.

Original language	English
Article number	5986678
Pages (from-to)	858-861
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	10
DOIs	https://doi.org/10.1109/LAWP.2011.2165196
State	Published - 2011
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received June 19, 2011; revised July 21, 2011; accepted August 09, 2011. Date of publication August 18, 2011; date of current version September 01, 2011. This work was supported by the Ministry of Higher Education, Egypt, Research in Motion (RIM), Inc., and the Natural Sciences and Engineering Research Council (NSERC) of Canada under the NSERC/RIM Industrial Research Associate Chair and Discovery Programs.

Keywords

Anisotropy
artificial magnetic structures (AMS)
cavity model
patch antennas
transmission line (TL)

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/LAWP.2011.2165196

Cite this

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title = "High-gain patch antennas loaded with high characteristic impedance superstrates",

abstract = "It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate are determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50\% when compared to previous trends.",

keywords = "Anisotropy, artificial magnetic structures (AMS), cavity model, patch antennas, transmission line (TL)",

author = "Hussein Attia and Leila Yousefi and Omar Ramahi",

note = "Funding Information: Manuscript received June 19, 2011; revised July 21, 2011; accepted August 09, 2011. Date of publication August 18, 2011; date of current version September 01, 2011. This work was supported by the Ministry of Higher Education, Egypt, Research in Motion (RIM), Inc., and the Natural Sciences and Engineering Research Council (NSERC) of Canada under the NSERC/RIM Industrial Research Associate Chair and Discovery Programs.",

year = "2011",

doi = "10.1109/LAWP.2011.2165196",

language = "English",

volume = "10",

pages = "858--861",

journal = "IEEE Antennas and Wireless Propagation Letters",

issn = "1536-1225",

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T1 - High-gain patch antennas loaded with high characteristic impedance superstrates

AU - Attia, Hussein

AU - Yousefi, Leila

AU - Ramahi, Omar

N1 - Funding Information: Manuscript received June 19, 2011; revised July 21, 2011; accepted August 09, 2011. Date of publication August 18, 2011; date of current version September 01, 2011. This work was supported by the Ministry of Higher Education, Egypt, Research in Motion (RIM), Inc., and the Natural Sciences and Engineering Research Council (NSERC) of Canada under the NSERC/RIM Industrial Research Associate Chair and Discovery Programs.

PY - 2011

Y1 - 2011

N2 - It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate are determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50% when compared to previous trends.

AB - It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate are determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50% when compared to previous trends.

KW - Anisotropy

KW - artificial magnetic structures (AMS)

KW - cavity model

KW - patch antennas

KW - transmission line (TL)

UR - https://www.scopus.com/pages/publications/80052561130

U2 - 10.1109/LAWP.2011.2165196

DO - 10.1109/LAWP.2011.2165196

M3 - Article

AN - SCOPUS:80052561130

SN - 1536-1225

VL - 10

SP - 858

EP - 861

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

M1 - 5986678

ER -

High-gain patch antennas loaded with high characteristic impedance superstrates

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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