Impedance matching of rectangular microstrip antennas partially loaded with DNG metamaterials

K. S. Zheng; Wai Yip Tam; D. B. Ge

doi:10.1109/EUMC.2008.4751543

Impedance matching of rectangular microstrip antennas partially loaded with DNG metamaterials

K. S. Zheng, Wai Yip Tam, D. B. Ge

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

7 Citations (Scopus)

Abstract

A new structure for improving the bandwidth and impedance matching of subwavelength resonant rectangular microstrip antennas filled with double-positive material and double-negative metamaterials is presented. Due to the phase compensation properties of double-negative metamaterials, arbitrarily low resonant frequency can be obtained for a fixed dimension. However, the antenna does not radiate efficiently because of the radiation from the two radiating edges cancels each other. An extra double-positive material slab is inserted between the radiator and substrate to reverse the axial electric fields at the radiating edges and hence to improve the input impedance characteristics. The input impedance of the proposed structure is studied using finite-difference time-domain method.

Original language	English
Title of host publication	Proceedings of the 38th European Microwave Conference, EuMC 2008
Pages	678-681
Number of pages	4
DOIs	https://doi.org/10.1109/EUMC.2008.4751543
Publication status	Published - 1 Dec 2008
Event	38th European Microwave Conference, EuMC 2008 - Amsterdam, Netherlands Duration: 27 Oct 2008 → 31 Oct 2008

Conference

Conference	38th European Microwave Conference, EuMC 2008
Country/Territory	Netherlands
City	Amsterdam
Period	27/10/08 → 31/10/08

ASJC Scopus subject areas

Electrical and Electronic Engineering

More information

10.1109/EUMC.2008.4751543

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abstract = "A new structure for improving the bandwidth and impedance matching of subwavelength resonant rectangular microstrip antennas filled with double-positive material and double-negative metamaterials is presented. Due to the phase compensation properties of double-negative metamaterials, arbitrarily low resonant frequency can be obtained for a fixed dimension. However, the antenna does not radiate efficiently because of the radiation from the two radiating edges cancels each other. An extra double-positive material slab is inserted between the radiator and substrate to reverse the axial electric fields at the radiating edges and hence to improve the input impedance characteristics. The input impedance of the proposed structure is studied using finite-difference time-domain method.",

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Impedance matching of rectangular microstrip antennas partially loaded with DNG metamaterials. / Zheng, K. S.; Tam, Wai Yip; Ge, D. B.
Proceedings of the 38th European Microwave Conference, EuMC 2008. 2008. p. 678-681 4751543.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AB - A new structure for improving the bandwidth and impedance matching of subwavelength resonant rectangular microstrip antennas filled with double-positive material and double-negative metamaterials is presented. Due to the phase compensation properties of double-negative metamaterials, arbitrarily low resonant frequency can be obtained for a fixed dimension. However, the antenna does not radiate efficiently because of the radiation from the two radiating edges cancels each other. An extra double-positive material slab is inserted between the radiator and substrate to reverse the axial electric fields at the radiating edges and hence to improve the input impedance characteristics. The input impedance of the proposed structure is studied using finite-difference time-domain method.

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Impedance matching of rectangular microstrip antennas partially loaded with DNG metamaterials

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