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2014-01-02
A New Spiral Antenna with Improved Axial Ratio and Shorted Arm Length
By
Progress In Electromagnetics Research C, Vol. 46, 83-89, 2014
Abstract
A new spiral antenna is proposed in this paper. The developed antenna has improved axial ratio (AR) and shorted arm length. The function of the new spiral is given. The developed spiral antenna combines the low frequency property of power spiral antenna and high frequency property of Archimedean spiral antenna. That is, the growth rate of radial distance at large winding angle is close to power spiral for improved AR in low frequencies, and the growth rate at small winding angle is close to Archimedean spiral for good AR in high frequencies. The results reveal that the developed spiral antenna has noticeable improved axial ratio at low frequencies compared with Archimedean spiral antenna, and the problem of axial ratio degradation of power spiral antenna was also solved. The arm length is shorted by 46.2% compared to conventional Archimedean spiral antenna, and 63.5% compared to power spiral antenna.
Citation
Hui-Fen Huang Zonglin Lv , "A New Spiral Antenna with Improved Axial Ratio and Shorted Arm Length," Progress In Electromagnetics Research C, Vol. 46, 83-89, 2014.
doi:10.2528/PIERC13120302
http://www.jpier.org/PIERC/pier.php?paper=13120302
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