A Size-Reduced, Circularly Polarized, Log-Periodic Dipole Array

Kevin A. Leon; Joshua Haney; Sungkyun Lim

doi:10.1109/LAWP.2021.3131974

A Size-Reduced, Circularly Polarized, Log-Periodic Dipole Array

Kevin A. Leon, Joshua Haney, Sungkyun Lim

Electrical & Computer Engineering

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

2 Scopus citations

Abstract

A single-feed, circularly polarized, log-periodic dipole array (CPLPDA) with size-reduced cross-dipole elements is proposed. Size reduction in elements is achieved with curved, T-shaped top loading. Compared with the full-sized CPLPDA elements, the achieved element-length reduction is 50%. With six elements, the antenna shows a -10 dB impedance bandwidth (IBW) of 87.0% and a 3 dB axial ratio bandwidth (ARBW) of 50.0% in measurement. The common bandwidth (CBW) between the -10 dB IBW and 3 dB ARBW of the CPLPDA is 50.0%. The peak realized gain in the direction of the shortest element is 6.60 dBi over the CBW.

Original language	English
Pages (from-to)	371-375
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	21
Issue number	2
DOIs	https://doi.org/10.1109/LAWP.2021.3131974
State	Published - Feb 1 2022

Keywords

Antenna arrays
circular polarization
log-periodic antennas

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10.1109/LAWP.2021.3131974

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title = "A Size-Reduced, Circularly Polarized, Log-Periodic Dipole Array",

abstract = "A single-feed, circularly polarized, log-periodic dipole array (CPLPDA) with size-reduced cross-dipole elements is proposed. Size reduction in elements is achieved with curved, T-shaped top loading. Compared with the full-sized CPLPDA elements, the achieved element-length reduction is 50%. With six elements, the antenna shows a -10 dB impedance bandwidth (IBW) of 87.0% and a 3 dB axial ratio bandwidth (ARBW) of 50.0% in measurement. The common bandwidth (CBW) between the -10 dB IBW and 3 dB ARBW of the CPLPDA is 50.0%. The peak realized gain in the direction of the shortest element is 6.60 dBi over the CBW.",

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N2 - A single-feed, circularly polarized, log-periodic dipole array (CPLPDA) with size-reduced cross-dipole elements is proposed. Size reduction in elements is achieved with curved, T-shaped top loading. Compared with the full-sized CPLPDA elements, the achieved element-length reduction is 50%. With six elements, the antenna shows a -10 dB impedance bandwidth (IBW) of 87.0% and a 3 dB axial ratio bandwidth (ARBW) of 50.0% in measurement. The common bandwidth (CBW) between the -10 dB IBW and 3 dB ARBW of the CPLPDA is 50.0%. The peak realized gain in the direction of the shortest element is 6.60 dBi over the CBW.

AB - A single-feed, circularly polarized, log-periodic dipole array (CPLPDA) with size-reduced cross-dipole elements is proposed. Size reduction in elements is achieved with curved, T-shaped top loading. Compared with the full-sized CPLPDA elements, the achieved element-length reduction is 50%. With six elements, the antenna shows a -10 dB impedance bandwidth (IBW) of 87.0% and a 3 dB axial ratio bandwidth (ARBW) of 50.0% in measurement. The common bandwidth (CBW) between the -10 dB IBW and 3 dB ARBW of the CPLPDA is 50.0%. The peak realized gain in the direction of the shortest element is 6.60 dBi over the CBW.

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KW - log-periodic antennas

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A Size-Reduced, Circularly Polarized, Log-Periodic Dipole Array

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