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Magnetic quadrupole mode excitation of a cylindrical dielectric resonator antenna using planar feed.

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Title: Magnetic quadrupole mode excitation of a cylindrical dielectric resonator antenna using planar feed.
Authors: Ojha, Anuj K.1 (AUTHOR), Jain, Rutwik1 (AUTHOR), Kumar AV, Praveen1 (AUTHOR) praveen.kumar@pilani.bits-pilani.ac.in
Source: Microwave & Optical Technology Letters. Jan2020, Vol. 62 Issue 1, p484-490. 7p. 4 Diagrams, 5 Charts, 6 Graphs.
Subjects: Dielectric resonators, Dielectric resonator antennas, Planar antennas, Quadrupoles, Animal feeds, Permittivity
Abstract: In this article, excitation of the magnetic quadrupole mode of a cylindrical dielectric resonator antenna, designated as the HEM21δ mode, using planar feeding technique is discussed for the first time. Two types of planar feeds—a dual‐microstrip feed and a dual‐slot feed are numerically investigated. Results show that the dual‐slot feed is more suitable for exciting the HEM21δ mode as it gives better symmetry of the radiation pattern and lower cross‐polarization level. A DRA prototype (dielectric constant, εr = 24, loss tangent, tanδ = 0.002, diameter, 2a = 19.43 mm and height, h = 7.3 mm) using dual‐slot feed is fabricated and characterized. Measurements demonstrate a resonant frequency of ~ 4.96 GHz, bandwidth of ~4.4%, peak gain of ~3.45 dBi and peak cross‐polar level of ~ − 11 dB for the HEM21δ mode, which are in decent agreement with numerical predictions. [ABSTRACT FROM AUTHOR]
Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Magnetic quadrupole mode excitation of a cylindrical dielectric resonator antenna using planar feed.
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  Data: <searchLink fieldCode="AR" term="%22Ojha%2C+Anuj+K%2E%22">Ojha, Anuj K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jain%2C+Rutwik%22">Jain, Rutwik</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kumar+AV%2C+Praveen%22">Kumar AV, Praveen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> praveen.kumar@pilani.bits-pilani.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Microwave+%26+Optical+Technology+Letters%22">Microwave & Optical Technology Letters</searchLink>. Jan2020, Vol. 62 Issue 1, p484-490. 7p. 4 Diagrams, 5 Charts, 6 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Dielectric+resonators%22">Dielectric resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+resonator+antennas%22">Dielectric resonator antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Planar+antennas%22">Planar antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Quadrupoles%22">Quadrupoles</searchLink><br /><searchLink fieldCode="DE" term="%22Animal+feeds%22">Animal feeds</searchLink><br /><searchLink fieldCode="DE" term="%22Permittivity%22">Permittivity</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: In this article, excitation of the magnetic quadrupole mode of a cylindrical dielectric resonator antenna, designated as the HEM21δ mode, using planar feeding technique is discussed for the first time. Two types of planar feeds—a dual‐microstrip feed and a dual‐slot feed are numerically investigated. Results show that the dual‐slot feed is more suitable for exciting the HEM21δ mode as it gives better symmetry of the radiation pattern and lower cross‐polarization level. A DRA prototype (dielectric constant, εr = 24, loss tangent, tanδ = 0.002, diameter, 2a = 19.43 mm and height, h = 7.3 mm) using dual‐slot feed is fabricated and characterized. Measurements demonstrate a resonant frequency of ~ 4.96 GHz, bandwidth of ~4.4%, peak gain of ~3.45 dBi and peak cross‐polar level of ~ − 11 dB for the HEM21δ mode, which are in decent agreement with numerical predictions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/mop.32042
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 484
    Subjects:
      – SubjectFull: Dielectric resonators
        Type: general
      – SubjectFull: Dielectric resonator antennas
        Type: general
      – SubjectFull: Planar antennas
        Type: general
      – SubjectFull: Quadrupoles
        Type: general
      – SubjectFull: Animal feeds
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      – SubjectFull: Permittivity
        Type: general
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      – TitleFull: Magnetic quadrupole mode excitation of a cylindrical dielectric resonator antenna using planar feed.
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            NameFull: Kumar AV, Praveen
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            – D: 01
              M: 01
              Text: Jan2020
              Type: published
              Y: 2020
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