Abstract: According to the present application, an aircraft terminal device for air-to-ground communication includes an in-flight communication controller configured to control communication with multiple user terminals, and, when a counterpart based station device on the ground needs to reserve a communication resource for ground-to-ground communication, the in-flight communication controller cuts off communication with at least one of the multiple user terminals.

Abstract: According to the present application, a base station device is configured to manage a vertically-oriented cell and a ground cell with respective IDs used to identify each cell, to determine whether or not a counterpart terminal device is an aircraft terminal device for air-to-ground communication based on a terminal ID included in a message received therefrom, and to control communication with the counterpart terminal device such that, if the counterpart terminal device is an aircraft terminal device, the base station selects the vertically-oriented cell as a connection destination of the counterpart terminal device and transmits a connection instruction message including a cell ID of the vertically-oriented cell to the counterpart terminal device, otherwise, the base station selects the ground cell as a connection destination of the counterpart terminal device and transmits a connection instruction message including a cell ID of the ground cell to the counterpart terminal device.

Abstract: According to the present application, an aircraft terminal device for air-to-ground communication includes an in-flight communication controller configured to control communication with multiple user terminals and, and, when a counterpart based station device on the ground needs to reserve a communication resource for ground-to-ground communication, the in-flight communication controller cuts off communication with at least one of the multiple user terminals and.

Abstract: According to the present application, a base station device is configured to manage a vertically-oriented cell and a ground cell with respective IDs used to identify each cell, to determine whether or not a counterpart terminal device is an aircraft terminal device for air-to-ground communication based on a terminal ID included in a message received therefrom, and to control communication with the counterpart terminal device such that, if the counterpart terminal device is an aircraft terminal device, the base station selects the vertically-oriented cell as a connection destination of the counterpart terminal device and transmits a connection instruction message including a cell ID of the vertically-oriented cell to the counterpart terminal device, otherwise, the base station selects the ground cell as a connection destination of the counterpart terminal device and transmits a connection instruction message including a cell ID of the ground cell to the counterpart terminal device.

Abstract: A power amplifier (106) has a linear operation mode for performing power amplification by use of a linear operating domain in an input-output power characteristic and a saturation operation mode for performing power amplification by use of a saturation operation domain in the input-output power characteristic. An amplitude control section (112) outputs gain control voltage data for controlling a gain of a gain control amplifier (105) and power control voltage data for controlling a source voltage of a power amplifier (106) in accordance with a transmission power setting value, thereby causing the power amplifier (106) to operate in any one of the operation modes.

Abstract: A wireless communication apparatus capable of being communicated by employing communication systems is provided with: communication units containing a system-A communication unit for performing a communication operation by a wireless signal using a GSM communication system, and a system-B communication unit for performing a communication operation by an wireless signal using a UMTS communication system; a power supply voltage detecting unit for detecting a voltage of a power supply applied to the communication units in a predetermined time period; and a power supply control unit operated in such a control manner that when the power supply voltage is lower than, or equal to the final voltage of the GSM communication system, the communication operation by the system-A communication unit is stopped, whereas the power supply voltage is higher than the final voltage of the UMTS communication system, the communication operation by the system-B communication unit is continuously carried out.

Abstract: A nonlinear circuit, nonlinear amplification method, and radio communication apparatus equipped with this nonlinear circuit are disclosed whereby, when a transmit/receive signal in which a plurality of channels whose inter-slot boundary arrival times do not coincide are multiplexed is amplified by means of a nonlinear element, timings at which the set value of an applied voltage or applied current supplied to the nonlinear circuit is caused to make a transition are selected, thereby reducing the number of times these set values are caused to make a transition, and furthermore, an applied voltage or applied current actually supplied to the nonlinear element is made to reach the selected set value sooner, and the occurrence of distortion due to transmit/receive signal amplification is suppressed.

Abstract: A power measuring apparatus capable of accurate power measurement through segment averaging of a signal obtained by code division multiplexing a plurality of channels having different periods or timings at which their power levels change, a power control apparatus and radio communication apparatus provided with this power measuring apparatus and a power measuring method are disclosed. In this power measuring apparatus, an averaging start timing control section (105) inputs an averaging start timing signal to an averaging section (103) based on information input from a power change timing analysis section (106) when a longest segment identified by the power change timing analysis section (106) arrives. When the averaging start timing signal is input, the averaging section (103) starts to calculate a segment mean value of the input signal.

Abstract: High-temperature-side hydrogen storage alloy containers each containing a hydrogen storage alloy are disposed as a heat exchanging portion in high-temperature-side heat exchangers. Low-temperature waste-heat gas generated in a micro gas turbine is imported into the heat exchangers so that direct heat exchange is performed between the waste-heat gas and each of the alloy containers. On the other hand, low-temperature-side hydrogen storage alloy containers each containing a hydrogen storage alloy are disposed as a heat exchanging portion in low-temperature-side heat exchangers. The high-temperature-side alloy containers and the low-temperature-side alloy containers are connected to each other by hydrogen-travelling pipes. Cold heat generated in the low-temperature-side heat exchangers is supplied to a refrigeration output portion.

Abstract: A waste-heat gas driven cogeneration having a micro gas turbine, driving portions including high-temperature-side hydrogen storage alloy containers respectively and operated by heat exchange between waste-heat gas generated from the turbine and a cooling heat medium, and cold-heat generating portions including low-temperature-side hydrogen storage alloy containers respectively to absorb and release hydrogen into/from the containers to generate cold heat and supply the cold heat.

Abstract: High-temperature-side hydrogen storage alloy containers each containing a hydrogen storage alloy are disposed as a heat exchanging portion in high-temperature-side heat exchangers. Low-temperature waste-heat gas generated in a micro gas turbine is imported into the heat exchangers so that direct heat exchange is performed between the waste-heat gas and each of the alloy containers. On the other hand, low-temperature-side hydrogen storage alloy containers each containing a hydrogen storage alloy are disposed as a heat exchanging portion in low-temperature-side heat exchangers. The high-temperature-side alloy containers and the low-temperature-side alloy containers are connected to each other by hydrogen-travelling pipes. Cold heat generated in the low-temperature-side heat exchangers is supplied to a refrigeration output portion.

Abstract: A waste-heat gas driven cogeneration having a micro gas turbine, driving portions including high-temperature-side hydrogen storage alloy containers respectively and operated by heat exchange between waste-heat gas generated from the turbine and a cooling heat medium, and cold-heat generating portions including low-temperature-side hydrogen storage alloy containers respectively to absorb and release hydrogen into/from the containers to generate cold heat and supply the cold heat.

Abstract: The present invention relates to a process for producing sinters, including a steps of mixing a powder material with a binder, injection molding the mixture, and then dewaxing and sintering the resulting injection molded article, wherein the binder comprises at least one of: copolymer, a mixture of copolymer, paraffine wax, carnauba wax, a mixture of the paraffine wax and the carnauba wax, a plasticizer, and a lubricant. According to the present invention, the dewaxing step comprises heating the injection molded article to a temperature of 250.degree.-500.degree. C. in a heating rate of 5.degree.-100.degree. C./hour under the pressure not higher than 1 Torr in order to remove 40%-95 % by weight of the binder components. Further, the temperature elevation in the sintering step is started in a vacuum atmosphere and replacing the atmosphere with an inert gas atmosphere in the process of temperature elevation.