Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning

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Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning. / Javier Herraiz-Martinez, F; Hall, Peter; Liu, Q; Segovia-Vargas, D.

In: IEEE Transactions on Antennas and Propagation, Vol. 59, No. 5, 01.05.2011, p. 1460-1471.

Research output: Contribution to journalArticle

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Author

Javier Herraiz-Martinez, F ; Hall, Peter ; Liu, Q ; Segovia-Vargas, D. / Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning. In: IEEE Transactions on Antennas and Propagation. 2011 ; Vol. 59, No. 5. pp. 1460-1471.

Bibtex

@article{fe8e7a5d5a6a4208a1f46cc8c2c91e6f,
title = "Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning",
abstract = "Tunable left-handed (LH) wire antennas over a ground plane are presented in this paper. These antennas are small and have a wide tuning bandwidth and are matched to 50 Omega within the operation range. Two kinds of antennas have been developed: the monopole antenna and the half-loop antenna over ground plane. In both cases, the antennas are designed, manufactured and measured at fixed frequencies as a first step. After that, a study to replace some LH components with variable capacitors has been carried out for each antenna. Tunability over a wide bandwidth has been achieved. Finally, some prototypes of both antennas have been manufactured and measured. The tunable LH monopole antenna has been measured showing a monopolar radiation pattern with a 28% tuning bandwidth (695-924 MHz). Its radiation efficiency takes values between 50% and 70% within all the tuning bandwidth and the maximum dimension varies only between 0.11 lambda(0) at 695 MHz and 0.15 lambda(0) at 924 MHz. The tunable LH half-loop antenna over a ground plane has a radiation pattern with maximum radiation orthogonal to the ground plane. It has a 1.64:1 measured tuning bandwidth properly matched to 50 Omega (considering vertical bar s(11)vertical bar <-10 dB). Its measured radiation efficiency is always above 54% within the working bandwidth.",
keywords = "reconfigurable antennas, monopole antenna, loop antenna, tunable antennas, Left-handed materials",
author = "{Javier Herraiz-Martinez}, F and Peter Hall and Q Liu and D Segovia-Vargas",
year = "2011",
month = may,
day = "1",
doi = "10.1109/TAP.2011.2128851",
language = "English",
volume = "59",
pages = "1460--1471",
journal = "IEEE Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "IEEE Xplore",
number = "5",

}

RIS

TY - JOUR

T1 - Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning

AU - Javier Herraiz-Martinez, F

AU - Hall, Peter

AU - Liu, Q

AU - Segovia-Vargas, D

PY - 2011/5/1

Y1 - 2011/5/1

N2 - Tunable left-handed (LH) wire antennas over a ground plane are presented in this paper. These antennas are small and have a wide tuning bandwidth and are matched to 50 Omega within the operation range. Two kinds of antennas have been developed: the monopole antenna and the half-loop antenna over ground plane. In both cases, the antennas are designed, manufactured and measured at fixed frequencies as a first step. After that, a study to replace some LH components with variable capacitors has been carried out for each antenna. Tunability over a wide bandwidth has been achieved. Finally, some prototypes of both antennas have been manufactured and measured. The tunable LH monopole antenna has been measured showing a monopolar radiation pattern with a 28% tuning bandwidth (695-924 MHz). Its radiation efficiency takes values between 50% and 70% within all the tuning bandwidth and the maximum dimension varies only between 0.11 lambda(0) at 695 MHz and 0.15 lambda(0) at 924 MHz. The tunable LH half-loop antenna over a ground plane has a radiation pattern with maximum radiation orthogonal to the ground plane. It has a 1.64:1 measured tuning bandwidth properly matched to 50 Omega (considering vertical bar s(11)vertical bar <-10 dB). Its measured radiation efficiency is always above 54% within the working bandwidth.

AB - Tunable left-handed (LH) wire antennas over a ground plane are presented in this paper. These antennas are small and have a wide tuning bandwidth and are matched to 50 Omega within the operation range. Two kinds of antennas have been developed: the monopole antenna and the half-loop antenna over ground plane. In both cases, the antennas are designed, manufactured and measured at fixed frequencies as a first step. After that, a study to replace some LH components with variable capacitors has been carried out for each antenna. Tunability over a wide bandwidth has been achieved. Finally, some prototypes of both antennas have been manufactured and measured. The tunable LH monopole antenna has been measured showing a monopolar radiation pattern with a 28% tuning bandwidth (695-924 MHz). Its radiation efficiency takes values between 50% and 70% within all the tuning bandwidth and the maximum dimension varies only between 0.11 lambda(0) at 695 MHz and 0.15 lambda(0) at 924 MHz. The tunable LH half-loop antenna over a ground plane has a radiation pattern with maximum radiation orthogonal to the ground plane. It has a 1.64:1 measured tuning bandwidth properly matched to 50 Omega (considering vertical bar s(11)vertical bar <-10 dB). Its measured radiation efficiency is always above 54% within the working bandwidth.

KW - reconfigurable antennas

KW - monopole antenna

KW - loop antenna

KW - tunable antennas

KW - Left-handed materials

U2 - 10.1109/TAP.2011.2128851

DO - 10.1109/TAP.2011.2128851

M3 - Article

VL - 59

SP - 1460

EP - 1471

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

SN - 0018-926X

IS - 5

ER -