High-Power Dual-Branch Helical Antenna

A novel high-power axial-mode helical antenna has been developed. The antenna consists of two short helixes with the same polarization but a relative rotation angle. As the high-frequency current on the antenna is divided into two paths, its power capacity is much higher than conventional helical an...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 17; no. 3; pp. 472 - 475
Main Authors Liang, Yuan, Zhang, Jianqiong, Liu, Qingxiang, Li, Xiangqiang
Format Journal Article
LanguageEnglish
Published IEEE 01.03.2018
Subjects
Circular polarization
Coils
Conductors
dual-branch
feed probe
gain
helical antenna
Helical antennas
high power
Horn antennas
Microwave antennas
Wires
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Summary:A novel high-power axial-mode helical antenna has been developed. The antenna consists of two short helixes with the same polarization but a relative rotation angle. As the high-frequency current on the antenna is divided into two paths, its power capacity is much higher than conventional helical antenna. Some basic analysis and design of the dual-branch helical antenna are presented and a wideband, well-matched coaxial feeding for experiments has been carried out to get the frequency responses and far-field results. The results centered at 12.5 GHz indicate that the gain is 8.6 dB and the axial ratio is 2.2 dB, and it could handle a pulse power of 44.6 MW under vacuum condition.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2018.2796244