Conference Paper

EBG identification by the Reflection Phase Method, Design for Application WiFi Antenna

France Telecom R&D, La Turbie
DOI: 10.1109/EUCAP.2006.4584919 Conference: Antennas and Propagation, 2006. EuCAP 2006. First European Conference on
Source: IEEE Xplore

ABSTRACT

In a first part of this article, we present the method based on the reflection phase diagram for the identification of the EBG (electromagnetic band gap) structures. The procedure consists to plot the diagram of phase of the wave reflected by EBG structure excited by an incident wave, in the simplest case, plane and normal upon the structure. The forbidden band corresponds to the frequency band where the phase of the reflected wave is equal to 0plusmn45deg, criterion of Sievenpiper, or to 90plusmn45deg, criterion of Rahmat-Samii. In the filtered frequency band, the structure behaves as a magnetic conductor : a High-impedance surface. The EBG structure studied and designed is a Mushroom-like (D. Sievenpiper et al., 1999). The performances of this structure are modelled using the HFSS code. In the second part, we illustrate the application aimed by the design of this structure.

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    • "Nowadays, the development of the antennas with new performances becomes currently imperatively essential for the new services and network of telecommunication. It's a matter of the technology of EBG structure, a new technology for the improvement of the performances of antenna, applicable on a frequential spectrum extremely wide covered from the acoustic until the optical frequencies [1]. Microstrip antennas (MSAs) are an attractive choice for many modern communication systems due to their light weight, low profile with conformability, easy to be integrated with carriers of missile and satellite [2]. "

    Full-text · Dataset · Dec 2015
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    • "The applications of EBG structures in antenna designs have become a thrilling topic for antenna engineering [3]. It's a matter of the technology of EBG structure, a new technology for the improvement of the performances of antenna, applicable on a frequential spectrum extremely wide covered from the acoustic until the optical frequencies [4]. By employing, EBG structures are capable to enhance the performance of MSA in terms of gain, side lobe level, back lobe level and also mutual coupling. "
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    ABSTRACT: Gain improvement of a sector antenna of base station for mobile phone using microstrip antenna (MSA) array with curved woodpile Electromagnetic Band Gap (EBG) is presented. The advantages of this proposed antenna are easy fabrication and installation, high gain, and light weight. Moreover, it provides a fan-shaped radiation pattern and wider in the horizontal direction, which appropriate for mobile phone base station. The half-power beam widths in the H-plane and E-plane are 40 and 8 degrees, respectively. The paper also presents the design procedures of a 1×8 array antenna using MSAs associated with U-shaped reflector for decreasing their back and side lobes. A Computer Simulation Technology (CST) software has been used to compute the reflection coefficient (S11), radiation patterns, and gain of this antenna. The bandwidth, at S11 (-10 dB), is enough which can be well utilized for 3G base station, with a gain 20 dB.
    Full-text · Conference Paper · Mar 2014
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    • "The applications of EBG structures in antenna designs have become a thrilling topic for antenna engineering [8]. It's a matter of the technology of EBG structure , a new technology for the improvement of the performances of antenna, applicable on a frequential spectrum extremely wide covered from the acoustic until to the optical frequencies [9]. Besides that, EBG structures, also known as photonic crystals [10], are also used to improve the antenna performance [11]-[13]. "
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    ABSTRACT: This paper presents a sector antenna for base station of mobile phone using microstrip antenna (MSA) array with curved woodpile Electromagnetic Band Gap (EBG). The advantages of this proposed antenna are easy fabrication and installation, high gain, and light weight. Moreover, it provides a fan-shaped radiation pattern , a main beam having a narrow beam width in the vertical direction and a wider beamwidth in the horizontal direction, which are appropriate for mobile phone base station. The half-power beamwidths in the H-plane and E-plane are 37.4 and 8.7 degrees , respectively. The paper also presents the design procedures of a 1 × 8 array antenna using MSAs associated with U-shaped reflector for decreasing their back and side lobes. A Computer Simulation Technology (CST) software has been used to compute the reflection coefficient (S11), radiation patterns, and gain of this antenna. The bandwidth, at S11 (−10 dB), is enough, which can be well utilized for 3G base station, with a gain 20.84 dB.
    Full-text · Article · Mar 2014 · Open Journal of Antennas and Propagation
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