Shigeo Kawasaki

In this paper, as one of the examples of an application of an active integrated antenna technique, a design method and experimental data of the active integrated amplifier antenna array were reported for microwave power transmission in the space solar power satellite 2000 system. The stacked structure of a unit cell in the array proposed here consists of three layers: the amplification circuit layer, radiation layer, and coupling layer. By incorporating 2×2 unit cells with the combination of a directional coupler and an FET amplifier, a light unit patch plate with weight of 200g.

Millimeter wave frequencies are expected to be important for the high speed and large volume communication system in the multi-media society. Demands of light-weight, multi-functions are very high for such a system. The active integrated antenna is one of techniques to solve these problems. In this report, for use in the Intelligent Transport System (ITS), a 5.8GHz 2×2 active integrated antenna array fabricated on a soft substrate with a package-type FET and a K-band 2-element active integrated antenna array fabricated on a ceramic substrate with a MMIC oscillator were demonstrated. From the experimental results, it is believed that fundamental data for the new communication system were obtained.

In this paper, as one of the examples of an application of an active integrated antenna technique, a design method and experimental data of the active integrated amplifier antenna array were reported for microwave power transmission in the space solar power satellite 2000 system. The stacked structure of a unit cell in the array proposed here consists of three layers: the amplification circuit layer, radiation layer, and coupling layer. By incorporating 2×2 unit cells with the combination of a directional coupler and an FET amplifier, a light unit patch plate with weight of 200g.

Millimeter wave frequencies are expected to be important for the high speed and large volume communication system in the multi-media society. Demands of light-weight, multi-functions are very high for such a system. The active integrated antenna is one of techniques to solve these problems. In this report, for use in the Intelligent Transport System (ITS), a 5.8GHz 2×2 active integrated antenna array fabricated on a soft substrate with a package-type FET and a K-band 2-element active integrated antenna array fabricated on a ceramic substrate with a MMIC oscillator were demonstrated. From the experimental results, it is believed that fundamental data for the new communication system were obtained.

In this report, experimental data and their investigation by a simulator of an oscillation frequency shift in MMIC oscillator illuminated by a 1.5 μ m laser were described. Illumination with the small gate-source bias, the operating frequency was shifted higher compared to the self-oscillating one. Using a microwave circuit simulator, computed operating frequencies with tuning the capacitance value in the FET equivalent circuit model were observed using the harmonic balance analysis.

In this paper, as one of the examples of an application of an active integrated antenna technique, a design method and experimental data of the active integrated amplifier antenna array were reported for microwave power transmission in the space solar power satellite 2000 system. The stacked structure of a unit cell in the array proposed here consists of three layers: the amplification circuit layer, radiation layer, and coupling layer. By incorporating 2×2 unit cells with the combination of a directional coupler and an FET amplifier, a light unit patch plate with weight of 200g.

Millimeter wave frequencies are expected to be important for the high speed and large volume communication system in the multi-media society. Demands of light-weight, multi-functions are very high for such a system. The active integrated antenna is one of techniques to solve these problems. In this report, for use in the Intelligent Transport System (ITS), a 5.8GHz 2×2 active integrated antenna array fabricated on a soft substrate with a package-type FET and a K-band 2-element active integrated antenna array fabricated on a ceramic substrate with a MMIC oscillator were demonstrated. From the experimental results, it is believed that fundamental data for the new communication system were obtained.

In this paper, as one of the examples of an application of an active integrated antenna technique, a design method and experimental data of the active integrated amplifier antenna array were reported for microwave power transmission in the space solar power satellite 2000 system. The stacked structure of a unit cell in the array proposed here consists of three layers: the amplification circuit layer, radiation layer, and coupling layer. By incorporating 2×2 unit cells with the combination of a directional coupler and an FET amplifier, a light unit patch plate with weight of 200g.

Millimeter wave frequencies are expected to be important for the high speed and large volume communication system in the multi-media society. Demands of light-weight, multi-functions are very high for such a system. The active integrated antenna is one of techniques to solve these problems. In this report, for use in the Intelligent Transport System (ITS), a 5.8GHz 2×2 active integrated antenna array fabricated on a soft substrate with a package-type FET and a K-band 2-element active integrated antenna array fabricated on a ceramic substrate with a MMIC oscillator were demonstrated. From the experimental results, it is believed that fundamental data for the new communication system were obtained.