Search Results - "Iigusa, K"

Experimental Proof of Electrically Invisible State of Inductively Loaded Dipole and Proposal of Electrically Invisible Meander-Lines by Iigusa, K., Sawaya, T., Taromaru, M., Ohira, T., Komiyama, B.

“…We examine that an inductively loaded dipole becomes electrical invisible showing that the influence on a nearby antenna's input impedance and on its radiation…”
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A switchable multi-sector antenna for indoor wireless LAN systems in the 60-GHz band by Murakami, Y., Kijima, T., Iwasaki, H., Ihara, T., Manabe, T., Iigusa, K.

“…A switchable multi-sector antenna for indoor wireless local-area network (LAN) systems in the 60-GHz band has been proposed. The antenna has a pyramidal…”
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Gain Enhancement of H-Plane Sectoral Post-Wall Horn Antenna by Connecting Tapered Slots for Millimeter-Wave Communication by Iigusa, K., Li, K., Sato, K., Harada, H.

“…We propose a millimeter-wave antenna to serve as an element antenna for a multi-sector switched-beam antenna, which can be fed by a post-wall waveguide…”
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Reactance-domain MUSIC for ESPAR antennas (experiment) by Taillefer, E., Plapous, C., Jun Cheng, Iigusa, K., Ohira, T.

“…The electronically steerable parasitic array radiator (ESPAR) antenna offers low cost and low complexity relative to conventional array antennas. Because of…”
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COMETS 21-GHz advanced satellite broadcasting experiments-evaluation of trellis-coded 8-PSK performance by Ohkawa, M., Takahashi, T., Huan-Bang Li, Iigusa, K., Wakana, H.

“…An advanced satellite broadcasting system using 21 GHz has been studied by using the high-power (200 W) and wideband (120 MHz) transponders on the…”
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Periodically Loaded Straight Wires for Radio Wave Transmission Control by Iigusa, K, Harada, H, Kato, S, Hirokawa, J, Ando, M

“…Calculating current distributions along conducting straight wires reveals that the electric influence of the wires is more effectively reduced by loading…”
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An ultra-small anechoic box for rod array antenna measurement by Han, Q., Inagaki, K., Iigusa, K., Schlub, R., Ohira, T.

“…The influence of RF absorbers in the vicinity of an antenna is investigated in order to find the minimum size for an ultra-small anechoic box necessary for…”
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Electronically steerable parasitic array radiator antenna by Ohira, Takashi, Iigusa, Kyouichi

“…The electronically steerable parasitic array radiator antenna consists of one feed radiating element and parasitic radiating elements placed in the near field…”
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A slot-array antenna on a coaxial cylinder by Iigusa, K., Yamamoto, S., Tanaka, M., Teshirogi, T.

“…In mobile communication, omnidirectional directivity and circular polarization are convenient properties because when they are used, acquisition and track…”
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Switched four-sector beam antenna for indoor wireless LAN systems in the 60 GHz band by Ihara, T., Manabe, T., Iigusa, K., Kijima, T., Murakami, Y., Iwasaki, H.

“…A switched four-sector beam antenna for a wireless LAN system in the 60 GHz band has been developed. The antenna has a pyramidal configuration. Each isosceles…”
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An electrically invisible dipole loaded with a variable reactor and its applications for a reconfigurable antenna by Iigusa, Kyouichi, Ohira, Takashi, Komiyama, Bokuji

“…This paper shows that the integral of the current flowing on a parasitic dipole can be made to vanish by supplying a reactance with an appropriate value. When…”
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An equivalent weight vector model of array antennas considering current distribution along dipole elements by Iigusa, Kyouichi, Ohira, Takashi, Komiyama, Bokuji

“…In this paper, we show that the current distribution along the parasitic dipole elements loaded by variable reactors varies greatly depending on the variable…”
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Efficiency of short-distance wireless transmission considering radiation loss by Iigusa, K., Harada, H.

“…To evaluate radiation loss and conductor loss which are the cause of deterioration in the wireless electric power transmission, a calculation method of a…”
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Bandwidth enhancement of bent monopole antenna by closely locating a slotted plate by Iigusa, K., Harada, H.

“…We propose locating a slotted conductor plate in close proximity to a bent monopole antenna in order to enhance the bandwidth, and clarify that impedance…”
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Study on bandwidth enhancement of three-element Yagi-Uda antenna with narrow spacing by Iigusa, K, Harada, H

“…It had been shown that the working gain of about 7 dBi can be realized by a three-element Yagi-Uda antenna even if the inter-element spacing is narrowed down…”
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A Slim Electronically Steerable Parasitic Array Radiator Antenna by Iigusa, K., Sato, K., Fujise, M.

“…We propose a new design for an electronically steerable parasitic array radiator antenna that is about 96% smaller than conventional antennas. The size…”
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A horizontally polarized slot-array antenna on a coaxial cylinder by Iigusa, K., Tanaka, M.

“…We built a circularly polarized slot-array antenna on a coaxial cylinder that is omnidirectional in the horizontal plane and can have a shaped beam in the…”
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Improving gain of H-plane sectoral post-wall horn antenna for millimeter-wave communication by connecting tapered slots by Iigusa, K., Jing Gao, Li, K., Sato, K., Harada, H.

“…We propose a millimeter-wave antenna that can be assembled using several printed boards. A post-wall horn antenna structure and tapered slots are responsible…”
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Proposal and design of Yagi-Uda antenna for UHF-ITS mobile terminal by Iigusa, K., Li, K., Sato, K., Harada, H.

“…A Yagi-Uda antenna with a small short interelement distance (d) of approximately 0.025 lambda is proposed for use as a UHF-band ITS in-vehicle antenna. A…”
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A slot-array antenna on a coaxial cylinder with a circularly polarized conical beam by Iigusa, Kyouichi, Teshirogi, Tasuku, Fujita, Masaharu, Yamamoto, Shin-ichi, Ikegami, Tetsushi

“…As a vehicle‐mounted antenna to be used for satellite communication and broadcasting without the need for capture and tracking, a circularly polarized conical…”
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