Abstract:
A satellite receiver includes a control unit adapted to output to an antenna control signals for time-sequentially switching between a plurality of different satellite broadcast signals, a channel selecting unit adapted to select a transponder including a specific program from each of a plurality of broadcast signals input from the antenna, and a demultiplexer adapted to extract specific program data from each of the plurality of transponders selected by the channel selecting unit.
Abstract:
A receiver and a transmitter-receiver, such as a mobile telephone unit and a transceiver, capable of controlling a supplied power to a receiving unit including a variable gain amplifier with high precision. The receiver employs a configuration including, for example, a receiving unit, a gain control signal-generating unit that designates a gain value of variable gain amplifiers in the receiving unit, a control unit, and a memory. The memory stores supplied power values to the receiving unit that are associated with gain values, and the control unit controls an electric power to be supplied to the receiving unit by referencing the supplied power values stored in the memory based on a gain value designated by a gain control signal.
Abstract:
A divider circuit including a plurality of latch circuits which are connected in series such that each of the latch circuits is responsive to a control signal to latch data which is output from a preceding latch circuit in the series, and a logic circuit which receives the data output from the plurality of latch circuits and which outputs a logic operation result to a first latch circuit in the series of the plurality of latch circuits.
Abstract:
A filter circuit having an input resistance portion including a first transconductor having a positive input port impressed with a first voltage, a negative input port impressed with a second voltage, a positive output port and a negative output port; a second transconductor having a positive input port impressed with the second voltage, a negative input port impressed with a third voltage, a positive output port and a negative output port; and a third transconductor having a positive input port coupled to the positive output ports of the first and second transconductors and the negative output port of the third transconductor, a negative input port coupled to the negative output ports of the first and second transconductors and the positive output port of the third transconductor, a positive output port and a negative output port.
Abstract:
The present invention provides a simple smaller-sized elastic integrated circuit having a lower power, to which data synchronized with a first clock is input and which outputs data synchronized with a second clock. The elastic integrated circuit includes a read address counter which operates with an internal clock to output a read address count value; a delay circuit to which the read address count value is input and which delays and outputs the read address count value by a predetermined time period; a write address counter which operates using the read address count value output from the delay circuit with a clock externally input so as to output a write address count value; and a memory circuit which writes data input thereto by the write address count value and reads data written therein by the read address count value.
Abstract:
The microwave plasma torch of the invention includes: a vacuum container having an evacuating apparatus; a coaxial waveguide including an inner conductor and an outer conductor, a first end portion of the coaxial waveguide being connected with a microwave supplying apparatus for supplying a microwave and a second end portion of the coaxial waveguide being connected with the vacuum container, thereby introducing the microwave supplied from the microwave supplying apparatus into the vacuum container along a waveguide axis of the coaxial waveguide; and a gas supplying apparatus for injecting a gas into the vacuum container along a plurality of injection axes. In the microwave plasma torch, at least two of the plurality of injection axes do not cross the waveguide axis in the second end portion, and do not exist in a plane vertical to the waveguide axis, and a ratio of a diameter of the inner conductor to a diameter of the outer conductor in a vicinity of the second end portion decreases from the first to the second end portion along the waveguide axis.
Abstract:
In an excitation atomic beam source for use in doping impurities to a semiconductor, a magnetic field is generated in a space between a nozzle (12) and a skimmer (13). A microwave discharge is generated in the space to form a plasma in the space by applying microwaves to a gas to be ionized emitted from the nozzle (12). In this manner, high-velocity particles and excited atoms in the plasma are passed through the skimmer (13) to thereby generate a supersonic excitation atomic beam.
Abstract:
A laser ablation apparatus includes a laser oscillator, a condenser lens for condensing a laser light generated from the oscillator, a rotary cylindrical target having a side face which is illuminated by the laser light, a driving device for rotating the target, a substrate carrier device for moving a substrate in a direction parallel to a tangential direction of the cylindrical target, and a vacuum chamber located above the substrate. The vacuum chamber encloses a part of the cylindrical target, and has an open laser inlet port so that the side face of the target is illuminated by the laser light passing through the laser inlet port to adhere material evaporated from the target to the substrate when the substrate passing through the vacuum chamber.
Abstract:
A laser ablation device for forming a thin film includes a vacuum chamber having a gas introduction port through which an oxidating gas is introduced into the chamber, and a light-transmittable section, a target holder disposed in the vacuum chamber for holding a target made of a film forming material of an oxide, an object holder confronting the target holder for holding an object on which the thin film is to be formed, a short wavelength laser which emits a first short wavelength laser light passing to the target in the vacuum chamber through the light-transmittable section from outside of the vacuum chamber, and a short wavelength laser light irradiating device for irradiating the object with a second short wavelength laser light passing into the vacuum chamber through the light-transmittable section from outside of the vacuum chamber. The second short wavelength laser light has an intensity lower than that of the first short wavelength laser light irradiating the target. Alternatively, a short wavelength laser light passing device causes the second short wavelength laser light to pass through the light-transmittable section from outside of the vacuum chamber and then to pass in the vicinity of a surface of the object in the vacuum chamber as approximately parallel to the surface of the object.
Abstract:
A circularly polarized generator for transmitting circularly polarized transmitted electromagnetic waves and a circularly polarized wave reception antenna for receiving the electromagnetic waves is disclosed. A crank-shaped conductor pattern composed of a pair of U-shaped portions connected to each other so that the open sides of the letter U are directed oppositely to each other is affixed on a substrate, and has its one end arranged as a signal transmitting and receiving end for achieving minimum transmission losses and optimum axial ratio or intersecting polarized wave component discriminating factor as well as for reducing the size and weight and assuring ease of manufacture.