Premium
A frequency‐independent dual‐band printed quadrifilar helix antenna using nonuniform, unequal‐length, asymmetrical coupled lines
Author(s) -
Wu Yongle,
Qu Meijun,
Wang Weimin,
Liu Yuanan
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29895
Subject(s) - multi band device , helical antenna , microwave , bandwidth (computing) , physics , optics , frequency band , radio spectrum , antenna (radio) , electrical engineering , radiation pattern , engineering , telecommunications , slot antenna
A novel frequency‐independent dual‐band quadrifilar helix antenna (QHA) is proposed in this article. It can be applied for receiving signals of global positioning system, Galileo positioning system, and Beidou‐2. To achieve dual‐band/wide‐band operation, a planar dual‐frequency feeding network is explored to excite the proposed QHA. The measured results show that the 10‐dB impedance bandwidth is almost 49.2%, the half‐power beamwidths in the XOZ and YOZ planes are greater than 176° and 202° at 1.22 GHz, respectively, 130° and 120° at 1.57 GHz. In addition, the proposed QHA can provide stable, symmetrical, directional radiation patterns at two different bands and has low‐cost feature. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1728–1733, 2016