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Paper Abstract and Keywords
Presentation
Radiation Efficiency Enhancement of Electrically Small and Low-Profile Antenna Using Capacitive Feed Structure
Takeshi Fukusako, Hiroyuki Maema (Kumamoto Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Effects of stacking on radiation efficiency are studied for an electrically small and low-profile meandered line antenna using a capacitive feed structure. The lower meandered element is stacked with another meandered element at a very close distance of 25 μ m (1.4×10-4λ0, whereλ0 = 175.2 mm is the wavelength at the resonant frequency of 1.71 GHz.). Furthermore, this paper also discusses that the effect of choosing meandering directions is an important factor to improve the radiation efficiency. Finally, this antenna has 2 mm height from the ground plane and has a ka value of 0.476 < 0.5, (k: wavenumber at the resonant frequency, a: radius of a sphere surrounding the antenna.). This electrically small and low profile antenna achieves a radiation efficiency of 79% and 77% in simulated and measured results, respectively.
Keyword (in Japanese) (See Japanese page) 
(in English) Electrically small antenna / Radiation efficiency / stacked element / meandered antenna / / / /  
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Conference Information
Committee AP  
Conference Date 2014-05-15 - 2014-05-16 
Place (in Japanese) (See Japanese page) 
Place (in English) The Kanazawa Theatre 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Asian Workshop on Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2014-05-AP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Radiation Efficiency Enhancement of Electrically Small and Low-Profile Antenna Using Capacitive Feed Structure 
Sub Title (in English)  
Keyword(1) Electrically small antenna  
Keyword(2) Radiation efficiency  
Keyword(3) stacked element  
Keyword(4) meandered antenna  
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1st Author's Name Takeshi Fukusako  
1st Author's Affiliation Kumamoto University (Kumamoto Univ.)
2nd Author's Name Hiroyuki Maema  
2nd Author's Affiliation Kumamoto University (Kumamoto Univ.)
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