Two-arm Archimedean spiral antenna fed by broadband double sided parallel strip line

2016 ◽  
Vol 58 (8) ◽  
pp. 1879-1883 ◽  
Author(s):  
Seongwon Oh ◽  
Chihyung Ahn
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Qingyuan Fang ◽  
Mengzhe Jin ◽  
Weidong Liu

In this paper, a single-arm Archimedean spiral (SAAS) antenna with broadband circular polarization is investigated. Unlike traditional single-arm Archimedean spiral antenna, the antenna arm consists of a hybrid meandered strip line and a smooth arc strip line. Especially at low frequencies, the meandered strip line significantly improves the circular polarization performance by extending the antenna surface current path. The effects of the meandered strip line on the radiation pattern and axial ratio (AR) are studied in detail. To obtain unidirectional radiation, a metallic cavity is added below the SAAS antenna. The measurement results show that the voltage standing wave ratio (VSWR) is less than 2 from 0.88 GHz to 8.82 GHz, which indicates a wide impedance bandwidth of 1 : 10 is realized. A wide AR bandwidth of 1 : 5 is available, that the measured AR is less than 3 dB from 1.6 GHz to 8 GHz.


1992 ◽  
Vol 28 (23) ◽  
pp. 2130 ◽  
Author(s):  
H. Nakano ◽  
G. Hirokawa ◽  
J. Yamauchi ◽  
K. Hirose
Keyword(s):  

2008 ◽  
Vol 2 (7) ◽  
pp. 725-730 ◽  
Author(s):  
H. Nakano ◽  
H. Oyanagi ◽  
J. Yamauchi ◽  
S. Sasaki

2012 ◽  
Vol 48 (21) ◽  
pp. 1351 ◽  
Author(s):  
W. Jiang ◽  
L. Zhou ◽  
A.M. Gao ◽  
W. Shen ◽  
W.Y. Yin ◽  
...  

2008 ◽  
Vol 3 ◽  
pp. 169-177 ◽  
Author(s):  
Qing Liu ◽  
Cheng-Li Ruan ◽  
Lin Peng ◽  
Wei-Xia Wu

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