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Paper Abstract and Keywords
Presentation 2012-02-10 14:30
Loss reduction by air-region insertion to LTCC rectangular-waveguide slot array antenna in the millimeter-wave band
Yuanfeng She, Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.), Daisuke Hanatani, Masahiro Fujimoto (Hirai Seimitsu Corp.)
Abstract (in Japanese) (See Japanese page) 
(in English) In the millimeter-wave bands, the series-fed array antenna is facing a problem of large transmission loss and narrow bandwidth by using a high permittivity and large-loss tangent material. In this report, an air-layer is inserted in a LTCC waveguide of dielectric constant=6.6 and loss tangent=0.013 to reduce the transmission loss. The reduction of the equivalent dielectric constant by the air insertion structure enhances both the gain and the bandwidth of the series-fed slot array. We confirm these by measuring the single-mode waveguides and the one-dimensional series-fed slot arrays. The transmission loss of the single-mode rectangular waveguide has been reduced to 1/6 by using the partially-filled structure. The total gain has been enhanced by 8dB. The 3dB bandwidth has also been increased from 1.3GHz to 2.3GHz enhanced in the 60GHz band.
Keyword (in Japanese) (See Japanese page) 
(in English) waveguide / LTCC / loss / slot array / millimeter-wave / loss factor / long-line effect / tilting angle  
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Conference Information
Committee BCT IEICE-AP  
Conference Date 2012-02-09 - 2012-02-10 
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Paper Information
Registration To IEICE-AP 
Conference Code 2012-02-AP-BCT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Loss reduction by air-region insertion to LTCC rectangular-waveguide slot array antenna in the millimeter-wave band 
Sub Title (in English)  
Keyword(1) waveguide  
Keyword(2) LTCC  
Keyword(3) loss  
Keyword(4) slot array  
Keyword(5) millimeter-wave  
Keyword(6) loss factor  
Keyword(7) long-line effect  
Keyword(8) tilting angle  
1st Author's Name Yuanfeng She  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Jiro Hirokawa  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
3rd Author's Name Makoto Ando  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Daisuke Hanatani  
4th Author's Affiliation Hirai Seimitsu Kogyo Corporation (Hirai Seimitsu Corp.)
5th Author's Name Masahiro Fujimoto  
5th Author's Affiliation Hirai Seimitsu Kogyo Corporation (Hirai Seimitsu Corp.)
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Speaker Author-1 
Date Time 2012-02-10 14:30:00 
Presentation Time 25 minutes 
Registration for IEICE-AP 
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Volume (vol) vol.36 
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