Reduction of ground-plane-dependent effects on microstrip-fed printed rectangular monopoles

M. John; J. A. Evans; M. J. Ammann; J. C. Modro; Z. N. Chen

doi:10.1049/iet-map:20070053

Reduction of ground-plane-dependent effects on microstrip-fed printed rectangular monopoles

M. John, J. A. Evans, M. J. Ammann, J. C. Modro, Z. N. Chen

School of Electrical and Electronic Engineering

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

Abstract

Methods to mitigate the strong dependence of impedance bandwidth on the ground-plane size for a rectangular printed planar monopole is described. It is shown that the bandwidth limitation may be overcome by introducing feed-line asymmetry, which alters the purity and the Q of the higher frequency modes and by ground-plane augmentation, which effects the lower frequency modes. A method of extending the ground plane without increasing the overall antenna size is shown to improve both the bandwidth and gain and also to enable the use of significantly smaller ground planes. The effects of these techniques on radiation pattern are discussed.

Original language	English
Pages (from-to)	42-47
Number of pages	6
Journal	IET Microwaves, Antennas and Propagation
Volume	2
Issue number	1
DOIs	https://doi.org/10.1049/iet-map:20070053
Publication status	Published - 2008

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10.1049/iet-map:20070053

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abstract = "Methods to mitigate the strong dependence of impedance bandwidth on the ground-plane size for a rectangular printed planar monopole is described. It is shown that the bandwidth limitation may be overcome by introducing feed-line asymmetry, which alters the purity and the Q of the higher frequency modes and by ground-plane augmentation, which effects the lower frequency modes. A method of extending the ground plane without increasing the overall antenna size is shown to improve both the bandwidth and gain and also to enable the use of significantly smaller ground planes. The effects of these techniques on radiation pattern are discussed.",

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AB - Methods to mitigate the strong dependence of impedance bandwidth on the ground-plane size for a rectangular printed planar monopole is described. It is shown that the bandwidth limitation may be overcome by introducing feed-line asymmetry, which alters the purity and the Q of the higher frequency modes and by ground-plane augmentation, which effects the lower frequency modes. A method of extending the ground plane without increasing the overall antenna size is shown to improve both the bandwidth and gain and also to enable the use of significantly smaller ground planes. The effects of these techniques on radiation pattern are discussed.

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DO - 10.1049/iet-map:20070053

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ER -

Reduction of ground-plane-dependent effects on microstrip-fed printed rectangular monopoles

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