60results about How to "Improve banding" patented technology

A system for increasing the depth of field and decreasing the wavelength sensitivity of an incoherent optical system incorporates a special purpose optical mask into the incoherent system. The optical mask has been designed to cause the optical transfer function to remain essentially constant within some range from the in-focus position. Signal processing of the resulting intermediate image undoes the optical transfer modifying effects of the mask, resulting in an in-focus image over an increased depth of field. Generally the mask is placed at or near an aperture stop or image of the aperture stop of the optical system. Preferably, the mask modifies only phase and not amplitude of light, though amplitude may be changed by associated filters or the like. The mask may be used to increase the useful range of passive ranging systems.

A line-shaped comprises an antenna element in which a strip-shaped conductor is bent in a width direction of a strip, and a chamfered portion is provided on an outer edge of a bent portion of the strip-shaped conductor.

Two high frequency antennas are provided in a multilayer substrate. Each high frequency antenna is configured of a radiation element, a high frequency power supply line, and a high frequency power supply unit. A low frequency antenna is configured of a series radiation element, a low frequency power supply line, and a lower frequency power supply unit. The series radiation element is formed of two radiation elements connected by a radiation element connection line. One end side of the series radiation element is connected to the low frequency power supply unit via the low frequency power supply line. Open stubs to block transmission of a high frequency signal (SH) are connected to the radiation element connection line and the low frequency power supply line. Short stubs to block transmission of a low frequency signal (SL) are connected to the high frequency power supply lines.

A compact surface-mounted antenna having a wide frequency band. In the surface-mounted antenna, a first radiation electrode is formed on the left-half region of the upper surface of a base dielectric substrate. A multi-layer dielectric substrate is laminated on the upper surface of the base dielectric substrate to be bonded and fixed thereto. A second radiation electrode is formed on the right-half region of the upper surface of the multi-layer dielectric substrate. The first and second radiation electrodes are not vertically opposed to each other. Opposing edges of the first and second radiation electrodes are oblique lines. A feeding signal of a signal source is supplied to the first radiation electrode by coupling from a feeding connection electrode, and then, is supplied to the second radiation electrode from the first radiation electrode by another coupling between the first and second radiation electrodes. A direction in which the first radiation electrode excites is set to be substantially perpendicular to a direction in which the second radiation electrode excites.

A mobile radio apparatus antenna for improving the gain and widening the band is provided. A inverted-L antenna (10) is a feed element with one end thereof electrically connected to one plate surface of a circuit board (12) through a feed point. The circuit board (12) is a circuit board of a mobile radio apparatus, to which the circuit parts including the inverted-L antenna (10) are connected. A planar antenna (14) is provided facing the backside plate surface of the plate surface of the circuit board (12), to which the inverted-L antenna (10) is connected, and is a parasitic element with an electrical length in the length direction set to approximately ½ of the wavelength of radio waves communicated by the mobile radio apparatus. Here, the dimension of the inverted-L antenna (10), the circuit board (12), and the planar antenna (14), and the distance therebetween are adjusted to predetermined values, so as to change the self-impedance of the inverted-L antenna (10), the self-impedance of the planar antenna (14), and the mutual impedance between the inverted-L antenna (10) and the planar antenna (14).

The invention relates to the technical field of infrared spectrum detection, in particular to a portable near-infrared spectrum detection system. The portable near-infrared spectrum detection system comprises a shell, a collection window, detection light sources, a light-splitting device and a detector, and the collection window, the detection light sources, the light-splitting device and the detector are sequentially installed in the shell; a converter and a power supply device are further installed in the shell, the output end of the detector is connected with the input end of the converter, and the power supply device is connected with the detection light sources, the detector and a controller; the portable near-infrared spectrum detection system further comprises a sample pool which is installed on the collection window, the sample pool comprises a sampling part and a fixing seat, a cavity is formed in the sampling part, an opening is formed in one end of the sampling part, and the other end of the sampling part is movably connected in the fixing seat; a piston is arranged at the opening, the sampling part is movably connected in the fixing seat, and the fixing seat is fixedly installed on the collection window. According to the portable near-infrared spectrum detection system, on the condition that the size and weight of equipment are not increased, the detection precision is greatly improved, and the problem that a model is difficult to move is solved.

An asymmetrical flat antenna contains an insulation layer. The antenna also contains a conductive power supply pattern that is provided on the insulation layer and a conductive antenna pattern that extends from the power supply pattern and is provided on the insulation layer. The conductive antenna pattern has an asymmetrical configuration with respect to the power supply pattern.

A device amplifies light at wavelengths in the vicinity of 1420-1530 nm, using thulium doped silica-based optical fiber. This wavelength band is of interest as it falls in the low-loss optical fiber telecommunications window, and is somewhat shorter in wavelength than the currently standard erbium doped silica fiber amplifier. The device thus extends the band of wavelengths which can be supported for long-distance telecommunications. The additional wavelength band allows the data transmission rate to be substantially increased via wavelength division multiplexing (WDM), with minimal modification to the standard equipment currently used for WDM systems. The host glass is directly compatible with standard silica-based telecommunications fiber. The invention also enables modified silicate based amplifiers and lasers on a variety of alternative transitions. Specifically, an S-band thulium doped fiber amplifier (TDFA) using a true silicate fiber host is described.

The invention belongs to the technical field of alloy thin belt preparation and discloses a method for adopting belt spinning of a disc-type single roller to prepare an amorphous alloy thin belt. The method includes adopting the disc-type roller, spraying melt on the surface of a disc rotating around a disc central shaft, enabling a direction in which a centrifugal force is applied on the melt to be parallel to a contact face, namely the surface of the disc, and forming the amorphous alloy thin belt after an amorphous thin belt at the edge of the disc automatically breaks away from the roller under the action of cooling contraction and the centrifugal force. The amorphous alloy thin belt prepared by the method is thinner in size, higher in surface smoothness and better in performance.

The invention relates to the technical field of infrared spectrum detection, in particular to a portable near infrared spectrum detection system. The portable near infrared spectrum detection system comprises a shell, as well as a collection window, a detection light source, a beam splitting device and a detector which are arranged in the shell in sequence, wherein the shell is also internally provided with a converter and a power supply device, the output end of the detector is connected with the input end of the converter, the power supply device is connected with the detection light source, the detector and the converter respectively; the system also comprises a sample reservoir, the sample reservoir comprises a sapphire sampling contact surface and a fixed seat, a chamber is formed in the fixed seat and the two ends of the fixed seat are provided with openings, the opening at one end of the fixed seat is fixedly arranged on the collection window, the opening at the other end is fixedly provided with the sapphire sampling contact surface, and the beam splitting device is a linear gradual filter. By using the portable near infrared spectrum detection system provided by the invention, under the condition of not enlarging the equipment size and weight, the detection accuracy is greatly improved, and the problem that a model is difficult to transfer is solved.

The invention discloses a method for preparing an amorphous alloy thin strip through quenching conical single roller quickly and belongs to the technical field of alloy thin strip preparation. According to the method, a conical roll wheel is adopted, and melt is sprayed to a conical inclined slope face rotating around a conical central shaft and is made to form an included angle with a contact face from being perpendicular to the contact face due to the function of centrifugal force. On the edge of the conical inclined slope face, the amorphous alloy thin strip cools itself, contracts and comes off a roll wheel by itself under the action of centrifugal force. The thin strip prepared through the method in thinner is size, higher in surface smoothness, and better in performance.

A UWB antenna has an upper dielectric, a lower dielectric, and a conductive pattern sandwiched therebetween. The conductive pattern has a feeding point at a substantially center portion of a front surface. The conductive pattern has a reversed triangular portion having a right-hand taper part and a left-side taper part which widen from the feeding point at a predetermined angle toward a right-hand side surface and a left-hand side surface, respectively, and a rectangular portion having a base side being in contact with an upper side of the reversed triangular portion. The rectangular portion may preferable have at least one slit formed therein.

The invention relates to the technical field of infrared spectrum detection, in particular to a portable near-infrared spectrum detection system. The system comprises a shell, an acquisition window, a detection light source, a light splitting device and a detector, wherein the acquisition window, the detection light source, the light splitting device and the detector are sequentially installed in the shell from bottom to top. The shell is further internally provided with a converter and a power supply device. The output end of the detector is connected with the input end of the converter, and the power supply device is connected with a detection light source, the detector and the converter. The system further comprises a sample pond which is installed on the acquisition window. The sample pond is divided into a sample placemat part and a fixing part, a blocking piece is arranged in the sample placement part, a through hole is formed in the center of the blocking piece, and the fixing part is fixedly arranged on the acquisition window. The light splitting device is a linear gradually changed optical filter. The portable near-infrared spectrum detection system greatly improves detection precision under the condition that equipment size and weight are not increased, and the problem that model transport is difficult is solved.

In a data multiplexing network system, a first wavelength multiplexing function unit sets a plurality of different wavelengths which correspond to a plurality of different service classes, respectively, and maps each packet into each correspondent-wavelength which corresponds to each service class, to which the each packet belongs, and multiplexes the correspondent-wavelengths for the plurality of different service classes for a data transmission at a multiplexed-wavelength through a wavelength division multiplexing network. A second wavelength multiplexing function unit receives the each correspondent-wavelength and fetches a packet from the each correspondent-wavelength.

An antenna which can be reduced in size and which can widen the band of a VSWR without changing the shape of a ground pattern but while retaining a wide space for electronic parts to be mounted. The antenna 1 has a feeding electrode portion 4. This feeding electrode portion 4 includes a conductive flat plate, which is cut away at its one corner of a rectangle such that the cut-away portion 15 is defined by an arc joining two sides making a corner and bulging inward.

A problem of the invention is to provide a small-size communication terminal apparatus capable of reducing an SAR and also widening a band of an antenna and further achieving thinning.

The communication terminal apparatus has a substrate (13) disposed inside a housing, a power feeding part (12) disposed in the substrate (13), a monopole antenna (11) having plural elements of multi-frequency sharing, the monopole antenna for feeding power by electrically connecting one end to the power feeding part, and a ground wire (14) electrically connected to a wireless ground of the substrate (13), and the monopole antenna (11) having the plural elements is arranged in a direction vertical to a surface of the substrate (13) and in a back surface direction of the housing so as to be opposed to a human body at the time of a call.