NDLI: A circularly polarized planar and slender antenna using helical element and back conductor

Content Provider	IEEE Xplore Digital Library
Author	Fukusako, T. Ye Zhang Ide, K.
Copyright Year	2011
Description	Author affiliation: Kumamoto University, 2-39-1, Kurokami, Kumamoto 860-8555, Japan (Fukusako, T.; Ye Zhang; Ide, K.)
Abstract	A circularly polarized slender shaped helical antenna is presented. The helical antenna can generate circular polarization (CP) in the normal direction to the helical axias under a condition of structural parameters. However, when a planar and slender antenna shape is required, it may be difficult to satisfy the condition. In the proposed antenna, the ratio of the thickness : vertical : horizontal sides is approximately 1:2:8 which has been obtained generating circular polarization using a back conductor. The back conductor is installed at a close position behind the helical element using a capacitive feed structure in order to keep a low-profile structure. This antenna can be resonated at around 1 GHz with the size satisfying k0 a=0.35 (k0: wave mumber at the resonance frequency, a:radius of a hypothetical sphere circumferencing the antenna). Reasonable agreements have been obtained between simulated and measured results in S11, axial ratio, and radiation pattern.
Starting Page	132
Ending Page	135
File Size	248108
Page Count	4
File Format	PDF
ISBN	9781424491339
e-ISBN	9781424491346
DOI	10.1109/IWAT.2011.5752286
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Helical antennas Resonant frequency Conductors Frequency measurement Feeds
Content Type	Text
Resource Type	Article

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