摘要:
Besides a time constant circuit 5 that imposes a frequency limit on a wireless signal detected by a power detecting circuit 4 at a preset time constant Ta, there is provided a time constant circuit 8 that imposes a frequency limit on the wireless signal at a time constant Tb greater than the time constant Ta. When the signal level of an intermittent operation signal supplied from a signal input terminal 1 is H level or when a threshold processing circuit 6 decides that the level of the wireless signal is higher than a threshold Th, a logic unit 3 supplies a control signal that instructs starting to the power detecting circuit 4, time constant circuits 5 and 8 and threshold processing circuits 6 and 9.
摘要:
An array antenna apparatus in which an SN ratio is improved. Antenna elements having transmission modules, respectively, are arranged in plurality, wherein the plurality of transmission modules respectively have transmission signal generators that each output a transmission intermediate frequency signal, local oscillation signal generators that each output a local oscillation signal, and transmission mixers that each mix the transmission intermediate frequency signal and the local oscillation signal with each other, thereby to carry out frequency conversion to a transmission high frequency signal. A reference signal source inputs a reference signal to the transmission signal generators and the local oscillation signal generators. The transmission intermediate frequency signal and the local oscillation signal are synchronized with each other by the reference signal.
摘要:
A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module.
摘要:
A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module.
摘要:
There is provided a process for producing a precursor film for a polypropylene-based resin retardation film that can yield films with almost no orientation and with high transparency.The process for producing a precursor film for a polypropylene-based resin retardation film comprises a step of pressing a molten sheet formed by extruding a molten polypropylene-based resin from a T-shaped die 12 at 180° C. or higher and 300° C. or lower between a cooling roll 16 having a surface temperature regulated to −5° C. or higher and 30° C. or lower and a touch roll 14 having a surface temperature regulated to 80° C. or higher and 150° C. or lower, whereby the molten sheet is cooled and solidified.
摘要:
An exhaust gas purifying system reliably detects an amount of accumulated particulates, lengthens forced regeneration intervals, and improves fuel efficiency. The exhaust gas purifying system comprises: a particulate filter 22 disposed in an exhaust system of an internal combustion engine 2 and collecting particulates from exhaust gas, and an NO2 generating unit 21 upstream of or in the particulate filter 22; a discharged particulate amount calculating unit A1 calculates an amount Me of discharged particulates on the basis of an excess air ratio λ; a burnt particulate amount calculating unit A2 calculates an amount Mb of burnt particulates on the basis of the temperature of exhaust gas in front of the particulate filter or the temperature of the particulate filter; and a particulate accumulation amount calculating unit calculates an amount Ma of accumulated particulates on the basis of the amount Me of discharged particulates or the amount Mb of burnt particulates.
摘要:
An exchange is provided, the exchange receiving a number of a telephone terminal of a called party, selecting a network from a plurality of connectable networks including the Internet with the number and connecting to the network. In addition, the exchange calls the telephone terminal via a network other than the Internet and connects to the telephone terminal in response to a predetermined operation by a caller during a call via the Internet.
摘要:
An inventory information collecting unit automatically collects inventory information including inventory information regarding software installed in each of a plurality of computers within an organization. A usage-state information collecting unit updates a software license usage number which represents the number of software licenses used in each section of the organization. When the sum of the software license usage numbers of the respective sections of the organization exceeds a software license holding number which represents the number of software licenses owned by the organization, a license purchasing unit generates a purchase transaction for purchasing software licenses, the number of which is equal to the difference between the sum and the software license holding number and transfers a purchase expense to relevant sections.
摘要:
A hearing aid device for processing an input sound signal via a microphone so as to output a sound signal from an earphone comprises a signal processing element, a couple of acoustic nerve excitation pattern calculation elements, a couple of acoustic filter shape memory elements, a comparison element, a correction processing element, etc. The couple of acoustic nerve excitation pattern calculation elements calculate acoustic nerve excitation patterns of a normal hearing person and a hearing impaired person based on an output signal of the signal processing element and acoustic filter shapes of the normal hearing person and the hearing impaired person which are stored in the couple of acoustic filter shape memory elements. Each of the acoustic nerve excitation patterns is compared via the comparison element. Then, the correction processing element corrects the input sound signal such that the acoustic nerve excitation pattern of the hearing impaired person is identical with the acoustic nerve excitation pattern of the normal hearing person, so as to generate an output sound signal.
摘要:
An information processing apparatus is disclosed. A host computer makes a query to a selected printer connected to a network concerning a printer language supported by the printer. Then, print data is converted to match the printer language received in response to the above query, and the converted data is transmitted to the printer. This enables the user to achieve correct printing operations while the printer languages of the individual printers connected to the network are transparent to the user.