Search Results - "Konishi, Yoshihiko"

On-Board Calibration Methods for Mechanical Distortions of Satellite Phased Array Antennas by Takahashi, T., Nakamoto, N., Ohtsuka, M., Aoki, T., Konishi, Y., Chiba, I., Yajima, M.

“…In satellite phased-array antennas, mechanical distortions, which may be due to vibrations caused when launching the satellite into the orbit or thermal…”
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Theoretical study on measurement accuracy of rotating element electric field vector (REV) method by Takahashi, Toru, Miyashita, Hiroaki, Konishi, Yoshihiko, Makino, Shigeru

“…The rotating element electric field vector (REV) method is an extremely effective measurement technique for calibration of a phased array. However, if there is…”
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A Novel Amplitude-Only Measurement Method to Determine Element Fields in Phased Arrays by Takahashi, T., Konishi, Y., Chiba, I.

“…A novel amplitude-only measurement method is proposed for phased array calibrations. The proposed method can determine a complex element field at every phase…”
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Ultra low sidelobe using switched phase distribution in time-modulated array antennas by Nakanishi, Takayuki, Kihira, Kazunari, Takahashi, Toru, Konishi, Yoshihiko, Chiba, Isamu

“…In this paper, we present a simple algorithm for realizing ultra low sidelobe in time-modulated array antennas. Although the conventional algorithm controls…”
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Extended S-Parameter Method Including Radiation Pattern Measurements of an Antenna by Fukasawa, T., Yanagi, T., Miyashita, H., Konishi, Y.

“…Coaxial cables connected to the antenna frequently affect the characteristics of the antenna. Although the S-parameter method is one of the most effective…”
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Design of a Dual-Polarized Low Sidelobe Slotted Waveguide Antenna for C-Band Phased Array Weather Radar by Uno, Takashi, Uesaka, Takashi, Nakamoto, Narihiro, Fukasawa, Toru, Takahashi, Toru, Inasawa, Yoshio, Yamamoto, Takeshi, Koyanagi, Tomoyuki, Kakimoto, Ikuya, Konishi, Yoshihiko

“…This paper presents a dual-polarized low sidelobe slotted waveguide array antenna manufactured by resin injection molding for a C-band phased array weather…”
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Fast Measurement Technique for Phased Array Calibration by Takahashi, T., Konishi, Y., Makino, S., Ohmine, H., Nakaguro, H.

“…A novel measurement method is proposed in order to measure the active electric fields of the individual antenna elements in a phased array antenna. Fast and…”
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A novel design method on low cross polarization for dual-polarized patch antennas by Takahashi, Toru, Iwase, Ichirou, Nakaguro, Hiromasa, Miyashita, Hiroaki, Konishi, Yoshihiko

“…In this paper, a design method by a feed point perturbation is proposed to obtain a low cross polarization characteristic in dual‐polarized patch antennas. In…”
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Detecting Each Position of Residual Reflections Using a Radiation Pattern Measurement Method for Eliminating Reflections by Distance Changing Technique by Nishizawa, Kazushi, Konishi, Yoshihiko, Makino, Shigeru, Katagi, Takashi

“…In order to carry out high‐precision measurement of the radiation characteristics of antennas and to evaluate the reflection characteristics of microwave…”
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Phase optimization for accurate beam forming of phased array with element field errors at every phase shift by Nakamoto, Narihiro, Takahashi, Toru, Konishi, Yoshihiko, Chiba, Isamu

“…A phase optimization method to achieve an improvement of the radiation performance of a phased array is proposed. In the proposed method, phases are optimized…”
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Optimal design of broadband radome using particle swarm optimization by Chiba, Hidetoshi, Nishizawa, Kazushi, Miyashita, Hiroaki, Konishi, Yoshihiko

“…This paper presents an optimal radome design using particle swarm optimization (PSO) which has recently drawn considerable attention in a wide range of…”
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Dual-band-rejection filter for distortion reduction in RF transmitters by Uchida, H., Kamino, H., Totani, K., Yoneda, N., Miyazaki, M., Konishi, Y., Makino, S., Hirokawa, J., Ando, M.

“…A novel concept of dual-band-rejection filter (DBRF) is proposed with its circuit synthesis procedure and examples of its realization with dielectric…”
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An Elliptic-Function Bandpass Filter Employing Left-Handed Operations of an Inter-Digital Coupled Line by Uchida, H., Yoneda, N., Konishi, Y., Makino, S.

“…A new elliptic-function bandpass filter (BPF) is proposed, which utilizes an inter-digital coupled line (IDCPL) as a left-handed transmission line. The IDCPL…”
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Sideband suppression using switched phase distribution in time-modulated array antennas by Nakanishi, Takayuki, Kihira, Kazunari, Takahashi, Tom, Konishi, Yoshihiko, Chiba, Isaum

“…In this paper, we present a simple algorithm for realizing ultra low sidelobe in time-modulated array antennas. Although the conventional algorithm controls…”
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Research and development on phased array antennas in Japan by Konishi, Yoshihiko

“…This paper reviews research and development on the phased array antennas (PAAs) for several applications in Japan in over past three decades. The author…”
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Bandpass Directional Couplers with Electromagnetically-Coupled Resonators by Uchida, H., Yoneda, N., Konishi, Y., Makino, S.

“…Compact 90- and 180-degree directional couplers incorporating bandpass characteristics are presented. They can integrate a bandpass filter and a…”
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Dual-polarized Bidirectional-beam Dielectric Waveguide Antenna by Konishi, Yoshihiko, Hayashi, Yuya, Saiki, Keita, Kondo, Daisuke

“…This paper presents a dual-polarized bidirectional-beam dielectric waveguide antenna using an image guide type dielectric waveguide suitable for a small base…”
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Development of phased array systems in Japan by Chiba, I, Konishi, Y, Nishino, T

“…This paper reviews the research and development on the phased array antennas (PAAs) for several applications in Japan. First, the author shows the historical…”
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A Low Side-Lobe Slotted Ridge Waveguide Array Manufactured by Resin Injection Molding by Uno, Takashi, Uesaka, Takashi, Nakamoto, Narihiro, Fukasawa, Toru, Inasawa, Yoshio, Yamamoto, Takeshi, Koyanagi, Tomoyuki, Kakimoto, Ikuya, Konishi, Yoshihiko

“…This paper presents a low side-lobe slotted ridge waveguide array manufactured by resin injection molding. The resin waveguide is divided into two parts, and…”
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Design of Edge-Slotted Waveguide Array Antenna Manufactured by Injection-Molding by Uesaka, Takashi, Nakamoto, Narihiro, Fukasawa, Toru, Yoneda, Naofumi, Yamamoto, Takeshi, Koyanagi, Tomoyuki, Kakimoto, Ikuya, Konishi, Yoshihiko

“…This paper presents an edge-slotted waveguide array antenna manufactured by injection-molding for dual-polarized phased array antennas. A slotted waveguide…”
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