Multi-antenna system for a handy phone to reduce influence by user's hand. - Tomoaki Nishikido; Yutaka Saito; Makoto Hasegawa; Hiroshi Haruki; Yoshio Koyanagi; Kiyoshi Egawa (PIMRC, 2003)

A planar sector antenna suitable for small WLAN card terminal. - Hiroyuki Uno; Yutaka Saito; Gen-Ichiro Ohta; Hiroshi Haruki; Yoshio Koyanagi; Kiyoshi Egawa (PIMRC, 2003)

Improved method for evaluating antenna performance in mobile environment with consideration of polarization and phase. - Yoichi Nakagawa; Masahiro Mimura; Kentaro Miyano; Yoshio Koyanagi; Kyohei Fujimoto (IEEE Trans. Veh. Technol., 2003)

Characteristics of Built-In Folded Monopole Antenna for Handsets. - Shogo Hayashida; Tomoki Tanaka; Hisashi Morishita; Yoshio Koyanagi; Kyohei Fujimoto (IEICE Trans. Commun., 2005)

Attenuation Characteristics of the SAR in a COST244 Phantom with Different EM Source Locations and Sizes. - Shoichi Kajiwara; Atsushi Yamamoto; Koichi Ogawa; Akihiro Ozaki; Yoshio Koyanagi (IEICE Trans. Commun., 2005)

Simple Modeling of an Abdomen of Pregnant Women and Its Application to SAR Estimation. - Hiroki Kawai; Koichi Ito 003; Masaharu Takahashi; Kazuyuki Saito; Takuya Ueda; Masayoshi Saito; Hisao Ito; Hisao Osada; Yoshio Koyanagi; Koichi Ogawa (IEICE Trans. Commun., 2006)

Switched-Beam Slot Antenna over Electromagnetic Band-Gap Reflector. - Hiroyuki Uno; Yutaka Saito; Yoshio Koyanagi; Satoshi Yagitani; Isamu Nagano (IEICE Trans. Commun., 2007)

Compact Built-In Handset MIMO Antenna Using L-Shaped Folded Monopole Antennas. - Yongho Kim; Toshiteru Hayashi; Yoshio Koyanagi; Hisashi Morishita (IEICE Trans. Commun., 2008)

A Study on Minimization of Requisite Design Volume of Small Antennas Inside Handset Terminals. - Tuan Hung Nguyen; Hiroshi Sato; Yoshio Koyanagi; Hisashi Morishita (IEICE Trans. Commun., 2014)

Investigation on a Multi-Band Inverted-F Antenna Sharing Only One Shorting Strip among Multiple Branch Elements. - Tuan Hung Nguyen; Takashi Oki; Hiroshi Sato; Yoshio Koyanagi; Hisashi Morishita (IEICE Trans. Commun., 2015)

A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Bridge Line. - Quang Quan Phung; Tuan Hung Nguyen; Naobumi Michishita; Hiroshi Sato; Yoshio Koyanagi; Hisashi Morishita (IEICE Trans. Commun., 2021)

Antithetic effect of interferon-α on cell-free and cell-to-cell HIV-1 infection. - Ryuichi Kumata; Shoya Iwanami; Katrina B. Mar; Yusuke Kakizoe; Naoko Misawa; Shinji Nakaoka; Yoshio Koyanagi; Alan S. Perelson; John W. Schoggins; Shingo Iwami; Kei Sato (PLoS Comput. Biol., 2022)

Decoupling Method for Four Closely Spaced Planar Inverted-F Antennas Using Parasitic Elements and Bridge Lines. - Quang Quan Phung; Tuan Hung Nguyen; Naobumi Michishita; Hiroshi Sato; Yoshio Koyanagi; Hisashi Morishita (IEICE Trans. Commun., 2023)