A New Observation in Spiral and Curl Antenna Configurations above the Ground Plane

Kazuhide Hirose; Masayuki Hirukawa; Hisamatsu Nakano

doi:10.3390/app12094272

A New Observation in Spiral and Curl Antenna Configurations above the Ground Plane

Kazuhide Hirose, Masayuki Hirukawa, Hisamatsu Nakano

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

Abstract

We report here that spiral and curl antennas are essentially the same when using the moment method. This aids in the understanding and design of the two antennas, and serves as the groundwork for new ideas regarding antennas. First, the spiral antenna height above the ground plane was gradually reduced, and at each height, the spiral configuration parameters were optimized for an axial ratio of less than 0.1 dB. It was found that the spiral antenna had configuration parameters almost the same as those for a curl antenna at a height of 0.15 wavelengths. Next, the curl antenna was analyzed with a reduced height. The antenna, at a height of 0.10 wavelengths, showed a 3 dB axial ratio bandwidth of 3%, with a VSWR of less than two. The analysis results are verified with experimental results.

Original language	English
Article number	4272
Journal	Applied Sciences (Switzerland)
Volume	12
Issue number	9
DOIs	https://doi.org/10.3390/app12094272
Publication status	Published - 2022 May 1

Keywords

circularly polarized antenna
curl antenna
low-profile antenna
spiral antenna

ASJC Scopus subject areas

Materials Science(all)
Instrumentation
Engineering(all)
Process Chemistry and Technology
Computer Science Applications
Fluid Flow and Transfer Processes

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10.3390/app12094272

Cite this

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title = "A New Observation in Spiral and Curl Antenna Configurations above the Ground Plane",

abstract = "We report here that spiral and curl antennas are essentially the same when using the moment method. This aids in the understanding and design of the two antennas, and serves as the groundwork for new ideas regarding antennas. First, the spiral antenna height above the ground plane was gradually reduced, and at each height, the spiral configuration parameters were optimized for an axial ratio of less than 0.1 dB. It was found that the spiral antenna had configuration parameters almost the same as those for a curl antenna at a height of 0.15 wavelengths. Next, the curl antenna was analyzed with a reduced height. The antenna, at a height of 0.10 wavelengths, showed a 3 dB axial ratio bandwidth of 3%, with a VSWR of less than two. The analysis results are verified with experimental results.",

keywords = "circularly polarized antenna, curl antenna, low-profile antenna, spiral antenna",

author = "Kazuhide Hirose and Masayuki Hirukawa and Hisamatsu Nakano",

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journal = "Applied Sciences (Switzerland)",

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AU - Hirose, Kazuhide

AU - Hirukawa, Masayuki

AU - Nakano, Hisamatsu

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Y1 - 2022/5/1

N2 - We report here that spiral and curl antennas are essentially the same when using the moment method. This aids in the understanding and design of the two antennas, and serves as the groundwork for new ideas regarding antennas. First, the spiral antenna height above the ground plane was gradually reduced, and at each height, the spiral configuration parameters were optimized for an axial ratio of less than 0.1 dB. It was found that the spiral antenna had configuration parameters almost the same as those for a curl antenna at a height of 0.15 wavelengths. Next, the curl antenna was analyzed with a reduced height. The antenna, at a height of 0.10 wavelengths, showed a 3 dB axial ratio bandwidth of 3%, with a VSWR of less than two. The analysis results are verified with experimental results.

AB - We report here that spiral and curl antennas are essentially the same when using the moment method. This aids in the understanding and design of the two antennas, and serves as the groundwork for new ideas regarding antennas. First, the spiral antenna height above the ground plane was gradually reduced, and at each height, the spiral configuration parameters were optimized for an axial ratio of less than 0.1 dB. It was found that the spiral antenna had configuration parameters almost the same as those for a curl antenna at a height of 0.15 wavelengths. Next, the curl antenna was analyzed with a reduced height. The antenna, at a height of 0.10 wavelengths, showed a 3 dB axial ratio bandwidth of 3%, with a VSWR of less than two. The analysis results are verified with experimental results.

KW - circularly polarized antenna

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KW - low-profile antenna

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A New Observation in Spiral and Curl Antenna Configurations above the Ground Plane

Abstract

Keywords

ASJC Scopus subject areas

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