A Helix-loaded Equiangular Spiral Antenna with Compact Structure
A broadband circular polarization antenna based on the composite structure of planar spiral and longitudinal helix is presented.Compared to single spiral antenna or helix antenna,proposed antenna has a better performance at low frequency by introducing two longitudinal helix arms connecting with the terminal of the planar spiral arms.As a result,the return loss,axial ratio(AR)and gain are both improved without increasing the antenna size.The antenna is designed to operate from 2 to 18 GHz and has a physical dimension of φ50 × 45 mm3.A prototype was fabricated and tested,the results show that the proposed antenna can provide an AR of less than 2.5 dB,a return loss of less than-15 dB and a gain of greater than 0.5 dBi.
Spiral antenna helix antenna circular polarization Ultra-wideband
Sen Wang Hao Li Yunpeng Zhang Jiawei Long En Li
Beijing Institute of Space Long March Vehicle Beijing,China School of Electronic Science and Engineering University of Electronic Science and Technology of Chin
国际会议
杭州
英文
1-4
2018-12-03（万方平台首次上网日期，不代表论文的发表时间）