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A Small Broadband Omni-Directional Printed Antenna Comprising Symmetrically Arranged Trapezoid ElementsSUMI, Makoto; CHO, Keizo.IEICE transactions on communications. 2011, Vol 94, Num 4, pp 960-967, issn 0916-8516, 8 p.Article

Evaluation of SDMA employing vertical pattern and polarization control in actual cellular environment measurementNISHIMORI, Kentaro; CHO, Keizo.IEEE Vehicular Technology Conference. 2004, pp 244-248, isbn 0-7803-8255-2, 5Vol, 5 p.Conference Paper

Reduction in Mutual Coupling Characteristics of Slot-Coupled Planar Antenna due to Rectangular ElementsJIANG, Huiling; YAMAGUCHI, Ryo; CHO, Keizo et al.IEICE transactions on communications. 2012, Vol 95, Num 7, pp 2368-2376, issn 0916-8516, 9 p.Article

Bandwidth Characteristic Improvement of Filter Integrated Antenna Composed of Aperture Coupled Patch Antenna by Using Trapezoidal ElementsJIANG, Huiling; YAMAGUCHI, Ryo; CHO, Keizo et al.IEICE transactions on communications. 2009, Vol 92, Num 12, pp 3960-3963, issn 0916-8516, 4 p.Article

Low-Profile Design of Metasurface Considering FSS Filtering CharacteristicsKAWAKAMI, Yuki; HORI, Toshikazu; FUJIMOTO, Mitoshi et al.IEICE transactions on communications. 2012, Vol 95, Num 2, pp 477-483, issn 0916-8516, 7 p.Article

Monopole Antenna Array Arrangement for Card-type Mobile TerminalOKANO, Yoshiki; CHO, Keizo.IEEE Radio and Wireless Conference. 2004, pp 415-418, isbn 0-7803-8451-2, 1Vol, 4 p.Conference Paper