Search Results - "Sekiya, Naoto"

Design of Compact and High-Power HTS Double-Strip Dual-Mode Patch Resonator Filter for Transmit Filter Applications by Sekiya, Naoto

“…We presented a compact and high-power dual-mode high-temperature superconducting filter with double-strip resonator (DSR) for transmit filter applications. The…”
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Design and Performance of Superconducting Bulk Coil for RF Applications by Fujita, Takanori, Sekiya, Naoto

“…We have designed the first superconducting bulk coil for radio frequency (RF) applications. We investigated the effect of the line gap and line width of the…”
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Temperature dependence of power transfer efficiency and power handling capability of wireless power transfer system using superconducting bulk coil by Oshimoto, Natsuka, Fujita, Takanori, Sakuma, Keita, Sekiya, Naoto

“…We developed a cryocooler system to reveal the temperature dependence of the quality ( Q ) factor of high-temperature superconducting (HTS) bulk coil and the…”
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Compact High-Pole HTS Triband Bandpass Filters Using a New Feeding Structure by Unno, Takahiro, Sekiya, Naoto

“…We have designed a compact high-pole high-temperature superconducting triband bandpass filter (TBPF) using a new feeding structure. It combines an eight-pole…”
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Wireless Power Transfer System Using High-Quality Factor Superconducting Transmitting Coil for Biomedical Capsule Endoscopy by Sekiya, Naoto, Oshimoto, Natsuka, Ebihara, Kai, Uchida, Takanori, Sakuma, Keita, Ono, Satoshi

“…We experimentally investigated the power transfer efficiency (PTE) of a wireless power transfer (WPT) system for capsule endoscopy that uses a high-temperature…”
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Thermodynamic approach for enhancing superconducting critical current performance by Miura, Masashi, Tsuchiya, Go, Harada, Takumu, Sakuma, Keita, Kurokawa, Hodaka, Sekiya, Naoto, Kato, Yasuyuki, Yoshida, Ryuji, Kato, Takeharu, Nakaoka, Koichi, Izumi, Teruo, Nabeshima, Fuyuki, Maeda, Atsutaka, Okada, Tatsumori, Awaji, Satoshi, Civale, Leonardo, Maiorov, Boris

“…The addition of artificial pinning centers has led to an impressive increase in the critical current density ( J c ) of superconductors, enabling…”
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Design of Compact HTS Dual-Band Bandpass Filters Using Dual-Function Feeding Structure With Wide Stop-Band Response by Sekiya, Naoto

“…We have developed a compact high-temperature superconducting four-pole dual-band bandpass filter (DBPF) using a dual-function feeding structure with a wide…”
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Compact, Low Loss, and High Power Handling HTS Dual-Mode Double-Strip Resonator Filter With New Feeding Structure by Sekiya, Naoto, Kobayashi, Shinya

“…A compact, low loss and high power handling high temperature superconducting filter using dual-mode double-strip resonators (DSRs) was developed. We proposed…”
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Design of Miniaturized HTS Dual-Band Bandpass Filters Using Stub-Loaded Meander Line Resonators and Their Applications to Tri-Band Bandpass Filters by Sekiya, Naoto, Sugiyama, Shunsuke

“…We have designed a miniaturized high-temperature superconducting dual-band bandpass filters (DBPFs) using stub-loaded meander line resonators and their…”
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Independently Tunable HTS Dual-Band Bandpass Filters Using Dielectric Rods by Sekiya, Naoto, Unno, Takahiro

“…We have developed a high-temperature superconducting dual-band bandpass filter (DB-BPF) with independently tunable center frequencies. The DB-BPF is designed…”
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Study on Fins Knit by Two Kinds of Biodegradable String for a Manipulatable Endoscope by Makino, Koji, Watanabe, Hiromi, Yamaguchi, Tatsuya, Terada, Hidetsugu, Sekiya, Naoto

“…The endoscope is effective to search the condition or the disease in the body, however normal wired endoscope cannot check deep intestine because of limitation…”
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High Efficiency Wireless Power Transmission System That Uses HTS Transmitting and Copper Receiving Coils With a Large Difference in Quality Factor by Okeda, Masahiro, Sakuma, Keita, Sekiya, Naoto

“…We developed an efficient wireless power transmission (WPT) system using a high-temperature superconductor (HTS) spiral coil with a high quality factor as the…”
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Improvement in Power Transmission Efficiency of Wireless Power Transfer System Using Superconducting Intermediate Coil by Oshimoto, Natsuka, Sakuma, Keita, Sekiya, Naoto

“…We have demonstrated that using a high-quality-factor intermediate (IM) coil with a high temperature superconductor (HTS) wire improves the power transmission…”
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Design of NMR RF Probe Constructed With High-Temperature Superconducting Elliptical-Coupled Resonators by Sekiya, Naoto, Yoshioka, Emi, Hoshi, Haruki, Saito, Atsushi, Ohshima, Shigetoshi

“…A high-temperature superconducting (HTS) radio frequency (RF) probe has been designed for nuclear magnetic resonance spectroscopy that is constructed of two…”
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Quadrupling the depairing current density in the iron-based superconductor SmFeAsO1–xHx by Miura, Masashi, Eley, Serena, Iida, Kazumasa, Hanzawa, Kota, Matsumoto, Jumpei, Hiramatsu, Hidenori, Ogimoto, Yuki, Suzuki, Takumi, Kobayashi, Tomoki, Ozaki, Toshinori, Kurokawa, Hodaka, Sekiya, Naoto, Yoshida, Ryuji, Kato, Takeharu, Okada, Tatsunori, Okazaki, Hiroyuki, Yamaki, Tetsuya, Hänisch, Jens, Awaji, Satoshi, Maeda, Atsutaka, Maiorov, Boris, Hosono, Hideo

“…Iron-based 1111-type superconductors display high critical temperatures and relatively high critical current densities J c . The typical approach to increasing…”
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Examination on High-Q NMR Transmit/Receiver Pickup Coils Made by YBa2Cu3O7-δ Thin Films by Ohshima, Shigetoshi, Hoshi, Haruki, Takanashi, Naoki, Yamada, Hironobu, Saito, Atsushi, Yoshioka, Emi, Sekiya, Naoto, Tsuji, Shigenori, Suematsu, Hiroto

“…An important method to improve the sensitivity of a nuclear magnetic resonance (NMR) system is to increase the quality factor (Q) of the pickup coils. In this…”
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Examination on High-Q NMR Transmit/Receiver Pickup Coils Made by YBa 2 Cu 3 O 7-δ Thin Films by Ohshima, Shigetoshi, Hoshi, Haruki, Takanashi, Naoki, Yamada, Hironobu, Saito, Atsushi, Yoshioka, Emi, Sekiya, Naoto, Tsuji, Shigenori, Suematsu, Hiroto

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Study on a Manipulatable Endoscope with Fins Knit by a Biodegradable String by Makino, Koji, Iwamoto, Fumihiko, Watanabe, Hiromi, Sato, Tadashi, Terada, Hidetsugu, Sekiya, Naoto

“…The accuracy of the inspection of the capsule endoscope is increased, if it can be manipulated by the operator with wireless communication. To develop it, the…”
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Quadrupling the depairing current density in the iron-based superconductor SmFeAsO 1-x H x by Miura, Masashi, Eley, Serena, Iida, Kazumasa, Hanzawa, Kota, Matsumoto, Jumpei, Hiramatsu, Hidenori, Ogimoto, Yuki, Suzuki, Takumi, Kobayashi, Tomoki, Ozaki, Toshinori, Kurokawa, Hodaka, Sekiya, Naoto, Yoshida, Ryuji, Kato, Takeharu, Okada, Tatsunori, Okazaki, Hiroyuki, Yamaki, Tetsuya, Hänisch, Jens, Awaji, Satoshi, Maeda, Atsutaka, Maiorov, Boris, Hosono, Hideo

“…Iron-based 1111-type superconductors display high critical temperatures and relatively high critical current densities J . The typical approach to increasing J…”
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High-Order Compact Superconducting Dual-Band Bandpass Filters for Radio Astronomy by Sekiya, Naoto, Sakuma, Keita

“…A compact high-temperature superconducting 8-pole dual-band bandpass filter (DB-BPF) using shorted stub-loaded hairpin resonator with high selectivity was…”
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