Search Results - "Keiichi Numata"

Bispolides, Novel 20-Membered Ring Macrodiolide Antibiotics from Microbispora by Okujo, Noriyuki, Iinuma, Hironobu, George, Annie, Eim, Khor Siew, Li, Tan Lee, Ting, Ng Szu, Jye, Tan Chin, Hotta, Kunimoto, Hatsu, Masahiro, Fukagawa, Yasuo, Shibahara, Seiji, Numata, Keiichi, Kondo, Shinichi

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A widely tunable CMOS Gm-C filter with a negative source degeneration resistor transconductor by Shinichi Hori, Tadashi Maeda, hitoshi Yano, Noriaki Matsuno, Keiichi Numata, Nobuhide Yoshida, Yuji Takahashi, Tomoyuki Yamase, Walkington, R., Hikaru, H.

“…We propose a new negative source degeneration resistor (NSDR) transconductor to achieve a wide continuous-tuning range gm-C filter applicable for…”
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Low-power-consumption direct-conversion CMOS transceiver for multi-standard 5-GHz wireless LAN systems with channel bandwidths of 5-20 MHz by Maeda, T., Yano, H., Hori, S., Matsuno, N., Yamase, T., Tokairin, T., Walkington, R., Yoshida, N., Numata, K., Yanagisawa, K., Takahashi, Y., Fujii, M., Hida, H.

“…This paper describes a low-power-consumption direct-conversion CMOS transceiver for WLAN systems operating at 4.9-5.95 GHz. Its power consumption is reduced by…”
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A Low-Power Dual-Band Triple-Mode WLAN CMOS Transceiver by Maeda, T., Matsuno, N., Hori, S., Yamase, T., Tokairin, T., Yanagisawa, K., Yano, H., Walkington, R., Numata, K., Yoshida, N., Takahashi, Y., Hida, H.

“…This paper describes a 0.18-mum CMOS direct-conversion dual-band triple-mode wireless LAN transceiver. The transceiver has a concurrent dual-band low-noise…”
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Bispolides, novel 20-membered ring macrodiolide antibiotics from microbispora by Okujo, Noriyuki, Iinuma, Hironobu, George, Annie, Eim, Khor Siew, Li, Tan Lee, Ting, Ng Szu, Jye, Tan Chin, Hotta, Kunimoto, Hatsu, Masahiro, Fukagawa, Yasuo, Shibahara, Seiji, Numata, Keiichi, Kondo, Shinichi

“…Seven new related compounds named bispolides A1, A2, A3, B1, B2a, B2b and B3, have been found in a culture of Microbispora sp. A34030, isolated from a…”
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A 2.88Gb/s digital hopping UWB transceiver by Tanaka, A., Numata, K., Kodama, H., Ishikawa, H., Oshima, N., Yano, H.

“…A digital hopping UWB transceiver that expands the baseband by three times over that of previous technologies to obtain a data rate of 2.88 Gb/s is described…”
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Morphological changes of Candida albicans induced by BMY-28864, a highly water-soluble pradimicin derivative by Numata, K, Ueki, T, Naito, N, Yamada, N, Kamasawa, N, Oki, T, Osumi, M

“…The time course of BMY-28864-dependent morphological changes in Candida albicans A9540 was studied by electron microscopy. Scanning electron microscopy…”
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A 0.18-μm CMOS Low-spurious Local Signal Generator for MB-OFDM UWB Radio by Tokairin, T., Matsuno, N., Numata, K., Maeda, T., Tanaka, S.

“…This paper presents a new single PLL and single SSB-mixer architecture for a local signal generator of the Mode-1 MB-OFDM UWB systems. Using a VCO running at…”
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A direct-conversion CMOS transceiver for 4.9-5.95GHz multi-standard WLANs by MAEDA, Tadashi, YANO, Hitoshi, FUJII, Masahiro, HIDA, Hikaru, YAMASE, Tomoyuki, YOSHIDA, Nobuhide, MATSUNO, Noriaki, HORI, Shinichi, NUMATA, Keiichi, WALKINGTON, Robert, TOKAIRIN, Takashi, TAKAHASHI, Yuji

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A +2.4/0 V controlled high power GaAs SPDT antenna switch IC for GSM application by Numata, K., Takahashi, Y., Maeda, T., Hida, H.

“…We have developed a high-power-handling and low-voltage-controlled GaAs single-pole dual-throw (SPDT) antenna switch for GSM application. The switch circuit…”
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Studies on the mode of antifungal action of pradimicin antibiotics. I. Lectin-mimic binding of BMY-28864 to yeast mannan in the presence of calcium by Ueki, T, Numata, K, Sawada, Y, Nakajima, T, Fukagawa, Y, Oki, T

“…BMY-28864 (BMS-181184), a water-soluble pradimicin derivative, specifically bound on the yeast cell surface in the presence of calcium, which was considered to…”
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An ultra-low-power-consumption high-speed GaAs quasi-differential switch flip-flop (QD-FF) by Maeda, T., Numata, K., Fujii, M., Tokushima, M., Wada, S., Fukaishi, M., Ishikawa, M.

“…The developed GaAs static flip-flop operates at a data rate of 10 Gb/s with a power consumption of 2.8 mW at a supply voltage of 0.6 V. The power consumption…”
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A 150 mW 8:1 MUX and a 170 mW 1:8 DEMUX for 2.4 gb/s optical-fiber communication systems using n-AlGaAs/i-InGaAs HJFET's by Fujii, M., Numata, K., Maeda, T., Tokushima, M., Wada, S., Fukaishi, M., Ishikawa, M.

“…An 8:1 multiplexer (MUX) and a 1:8 demultiplexer (DEMUX) for 2.4-Gb/s optical communication systems have been developed using 0.35-/spl mu/m GaAs…”
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A high-speed low-power tri-state driver flip flop for ultra-low supply voltage GaAs heterojunction FET LSI's by Maeda, T., Numata, K., Tokushima, M., Ishikawa, M., Fukaishi, M., Hida, H., Ohno, Y.

“…This paper describes a low-supply-voltage flip flop circuit design. The advantages of low supply voltage are discussed. Based on an analytical circuit delay…”
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Glidobactins A, B and C, new antitumor antibiotics. II. Structure elucidation by Oka, M, Yaginuma, K, Numata, K, Konishi, M, Oki, T, Kawaguchi, H

“…The structures of new antitumor antibiotics, glidobactins A (Ia), B (Ib) and C (Ic) were elucidated by a combination of chemical and enzymatic degradations and…”
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A technique for compensating for temperature variation in low-supply-voltage GaAs DCFL circuits by Maeda, Tadashi, Numata, Keiichi, Ohno, Yasuo, Hida, Hikaru, Tokushima, Masatoshi, Fukaishi, Muneo, Ishikawa, Masaoki, Fujii, Masahiro

“…This paper describes a technique for compensating for the thermal variation in DC characteristics and propagation delay for GaAs DCFL circuits. This technique…”
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A high-power SP3T antenna switch IC with adaptive-charge-pump-circuit topology by Takahashi, Y., Numata, K., Maeda, T., Hida, H.

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A novel high-speed low-power tri-state driver flip flop (TD-FF) for ultra-low supply voltage GaAs heterojunction FET LSIs by Maeda, T., Numata, K., Tokushima, M., Ishikawa, M., Fukaishi, M., HIda, H., Ohno, Y.

“…The authors describe a new GaAs static flip flop, called TD-FF (tri-state driver flip flop), for ultra-low supply voltage GaAs heterojunction FET LSIs. The…”
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