123results about How to "Achieve the purpose of miniaturization" patented technology

The invention discloses an ultra-compacted microstrip patch array antenna. The ultra-compacted microstrip patch array antenna comprises a dielectric plate, an antenna array and a metal floor, wherein the antenna array and the metal floor are arranged on the dielectric plate; the antenna array consists of more than two antenna array units; each antenna array unit comprises a feeder line and a radiation patch; a decoupling network is arranged between the radiation patches of every two antenna array units; and a certain gap is reserved between the decoupling network and the two radiation patches; and each decoupling network adopts an interdigital structure formed by a left comb tooth and a right comb tooth which are inserted oppositely. According to the ultra-compacted microstrip patch array antenna, the electromagnetic mutual coupling between the arrays can be greatly lowered while the excellent bandwidth performance of the antenna unit is ensured, so that the miniaturization of the antenna is realized while certain performance is ensured, so as to realize the ultra-compacted structure of the array antenna.

The invention provides an image sampling lens system, an image sampling device and an electronic device. The image sampling lens system sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side. The first lens has a positive refractive power, and the object-side surface of the first lens is a convex surface. The second lens has a negative refractive power. The third lens has a refractive power, and both the object-side surface and image-side surface of the third lens are aspheric surfaces. The fourth lens has a negative refractive power, and both the object-side surface and image-side surface of the fourth lens are aspheric surfaces. The fifth lens has a refractive power, and both the object-side surface and image-side surface of the fifth lens are aspheric surfaces. The sixth lens has a refractive power, and the object-side surface of the sixth lens is a concave surface. The image-side surface of the sixth lens is a convex surface. Both the object-side surface and image-side surface of the sixth lens are aspheric surfaces. In the foregoing configuration condition, the converging ability of the whole system is focused on the object-side end of the lens, and the volume of the system can be effectively controlled. Therefore, the carrying convenience is improved. In addition, the chromatic aberration of the system and the peripheral focusing positions of an image are corrected. At the same time, the bending of peripheral images is avoided.

A lens driving device is provided, including a base, a holder, a first driving mechanism disposed on the first side of the base, a second driving mechanism disposed on the second side of the base opposite the first side, and a conductive member disposed on the base. The holder is configured to sustain a lens. The first driving mechanism is configured to force the holder to move along the optical axis of the lens. The second driving mechanism includes a circuit board assembly and a shape memory alloy (SMA) wire assembly configured to force the base to move in the plane perpendicular to the optical axis. The conductive member and the circuit board assembly are connected at an electrical connection point, and the SMA wire assembly is closer to the light-incident end of the lens with respect to the electrical connection point.

The invention relates to a gas detector, in particular to a portable photo-ionization gas detector, which solves the problems of low detection accuracy and flexibility existing in the prior photo-ionization gas detector. The detector comprises an electrodeless ultraviolet lamp and an ionization chamber of which the inside is provided with two offsetting electrode plates and a collecting electrode plate, wherein the ionization chamber is fixedly provided with a gas inlet end cover and provided with a gas outlet, the electrode plates in the ionization chamber are arranged in parallel and front faces of the electrode plates face each other, and are parallel to a light-transporting direction of the electrodeless ultraviolet lamp; the distance between the two offsetting electrode plates is equal to the height of an optical window of the electrodeless ultraviolet lamp, and the collecting electrode plate is arranged between two offsetting electrode plates; the gas inlet end cover is provided with a gas inlet window where a metallic micro dust filter net and a double-layer microporous filter membrane are arranged. The gas detector has the advantages of simple and reasonable structure, small volume, convenient carrying, accurate detection data, high flexibility and wide application range; moreover, gas detector also meets the real-time and continuous detection requirements in the operating field.

The invention relates to a micro low-temperature co-fired ceramic duplexer used for a GSM / DCS, belonging to the technical field of wireless communication elements and comprising a high-pass filteringpart and a low-pass filtering part, wherein the input end of the high-pass filtering part and the input end of the low-pass filtering part are connected in parallel as public antenna ports; the outputend of the high-pass filtering part is taken as a high-frequency output port, and the output end of the low-pass filtering part is taken as a low-frequency output port. The invention enables that theduplexer can be flexibly allocated in three-dimensional space by adopting a multilayer micro low-temperature co-fired ceramic technology, thereby leading the structure to be more compact and achieving the miniaturization aim. The allocation of the micro low-temperature co-fired ceramic duplexer can reduce the parasitic capacitance effect to large extent in the circuit operation and ensures that the parasitic capacitance part is added in an allocated capacitor, and the quantity value of the capacitor of the parasitic capacitance part is still equal to the originally-designed quantity value.

The invention relates to a hair comb capable of removing hooked hair. The hair comb comprises a body, a comb pin unit and a brake unit, wherein the body is provided with at least one through hole and a guide part which extends along a first direction; the comb pin unit is fixed on the body and is provided with a plurality of comb pins which extend along a second direction; and the brake unit is provided with a brake plate corresponding to the comb pin unit, a pushing piece which is sleeved in the guide part, and at least one flexible piece which is connected between the brake plate and the pushing piece. The pushing piece is operated to slide along the guide part, is linked with the brake plate through the flexible piece and is moved from an original position to a removing position, so that the aims of reducing overall height and miniaturizing products are fulfilled.

The invention relates to a thermodynamic calculation method for a continuous spiral baffle plate shell-and-tube heat exchanger. Firstly, according to thermal parameters required by the design, the design of a single segmental baffle plate shell-and-tube heat exchanger is performed according to a design method of a traditional shell-and-tube heat exchanger, detailed geometry parameters of the single segmental baffle plate shell-and-tube heat exchanger are determined and meet requirements of working conditions, the heat exchanging area and the central tube diameter of the continuous spiral baffle plate shell-and-tube heat exchanger are determined under the conditions that the continuous spiral baffle plate shell-and-tube heat exchanger is the same as the obtained single segmental baffle plate shell-and-tube heat exchanger through the design in structural style, heat exchange tube diameter, heat exchanger tube arrangement mode and tube pass number, and then the baffle plate distance of the continuous spiral baffle plate shell-and-tube heat exchanger is determined according to a maximum flow velocity ratio. The calculation method can accurately and efficiently calculate the heat exchanger meeting requirements of a given thermal load task, the design efficiency and accuracy are high, the purpose of miniaturizing the heat exchanger can be achieved, and installation space and raw material are saved.

The invention discloses a miniaturized antenna with a reconfigurable frequency, which a ground piece, a first dielectric plate arranged on the ground piece, a coupling feeder arranged on the first dielectric plate, a second dielectric plate arranged on the coupling feeder and a radiation unit arranged on the second dielectric plate, wherein the ground piece is electrically connected with the radiation unit through first through holes passing through the first dielectric plate and the second dielectric plate; and the radiation unit is of a split ring resonator structure. In the invention, the antenna size is greatly reduced through adopting the split ring resonator structure as the radiation unit and adopting a Hilbert curve to carry out splitting on SRRs (Split Ring Resonators), thereby achieving the purpose of antenna miniaturization. Meanwhile, a plurality of metal through holes are arranged on the dielectric plates to connect the radiation unit and the ground piece, and the grounding of the radiation antenna at different positions is realized by using the on-off of a variable capacitance diode so as to achieve impedance transformation, so that the number of grounded diodes is changed to adjust the number of switching frequencies.

The invention discloses an anchor system for fixing a steel strand in a pre-stressed structure. The anchor system comprises an anchor board, an anchor bearing plate, below-anchor spiral ribs and clamping pieces, wherein a main body of the anchor bearing plate is in a cylindrical form and gradually contracts from outside to inside; three round pressure-bearing steel boards are adhered to the outer side of the cylindrical main body at certain intervals; the sizes of the three-order steel boards are gradually reduced from outside to inside; and the middle part of the cylindrical main body is used for threading of pre-stressed steel. The anchor bearing plate of the anchor system adopts the form that the three-order round pressure-bearing boards are arranged along depth, a first-order pressure-bearing board shares more than a half of concentrated force, a second-order pressure-bearing board and a third-order pressure-bearing board share about 2 / 3 and 1 / 3 of the residual concentrated force, and the concentrated force of the anchor board is uniformly transmitted to the deep part of concrete below an anchor, so that not only can partial pressure stress under the anchor be prevented from being too concentrated, but also the limitation effect of the below-anchor spiral ribs can be effectively improved. Therefore, the occupied area and the space of the anchor bearing plate can be greatly reduced, and a design space and a construction property for anchor configuration in beam-column node positions of a reinforced concrete frame can be greatly enlarged and improved.

The invention provides a miniature waveguide mode circulator which comprises an upper shell, a lower shell, a Y-shaped junction waveguide and ferrite elements, wherein permanent magnets are arranged on the upper shell and the lower shell, a waveguide impedance transformer is arranged on a wide-edge plane of the Y-shaped junction waveguide, and the two ferrite elements are positioned on a center axle line of the waveguide impedance transformer and the permanent magnets; metal electromagnetic conductors are placed into the Y-shaped junction waveguide and connected with the corresponding edge of the Y-shaped junction waveguide, the width of a port of the Y-shaped junction waveguide is less than the half-wavelength of a working frequency, the metal electromagnetic conductors extend from a Y-shaped junction plane of the Y-shaped junction waveguide and are mutually isolated; and at least one microwave absorber element is arranged at two sides of each metal electromagnetic conductor and used for absorbing a reflection power of the port. The miniature waveguide mode circulator is in a structure of matching a waveguide thin stick with a terminal load, is suitable for miniature waveguide isolator elements, has the advantages of small total size, light weight and ideal isolation property, and is used for filtering a high-order mode by adopting a combination mode of a plurality of waveguide isolators.

The invention discloses an antenna substrate with high dielectric coefficient, including a first and a second dielectric layer. The first dielectric layer has a first dielectric coefficient, the second layer forms on one side of the first layer with a second dielectric coefficient, and the second dielectric coefficient is lower than the first one. In addition, the optional first and second metal layer form on the same side or both sides of the first dielectric layer to form a capacitor.

The invention discloses a miniature printing logarithmic cycle antenna based on unit bending. The antenna comprises the components of a dielectric substrate, a feeding unit, a plurality of radiating units with different lengths, and double parallel lines which are connected with the plurality of radiating units. Each radiating unit comprises a top-layer radiating unit and a bottom-layer radiating unit. The radiating units are arranged on the upper surface and the lower surface of the dielectric substrate according to a length sequence. The top-layer radiating unit and the bottom-layer radiating unit are respectively arranged on the upper surface and the lower surface of the dielectric substrate. The dimensions and the structures of the top-layer radiating unit and the bottom-layer radiating unit in each radiating unit are same. The top-layer radiating unit and the bottom-layer radiating unit in each radiating unit are symmetrical relative to the two parallel lines. The miniature printing logarithmic cycle antenna can realize the broadband antenna with excellent matching. According to the miniature printing logarithmic cycle antenna, the transverse dimension of the antenna is greatly reduced through bending an oscillator, and furthermore antenna performance basically does not reduce, thereby realizing miniaturization of the printing logarithmic cycle antenna.

The invention discloses a press-type switch wiring structure, and the structure comprises a body and a button. The body comprises an accommodation space, two connection pieces disposed in the accommodation space, and a guide groove which is communicated with the accommodation space. The button comprises a base part, a guide part disposed at one side of the base part in a bulged manner, a first elastic part accommodated in the guide part, a second elastic part sleeving the outer wall of the guide part, and a conductive piece disposed on the guide part, wherein the guide part can move relative to the guide groove, and drives two ends of the conductive piece to make contact with the two connection pieces or to be separated with the two connection pieces for causing a short-circuit fault. Therefore, the structure enables the axis of the second elastic part to be coaxial with the axis of the first elastic part, so as to effectively achieve the miniaturization of the structure.

An interferometric fiber optic hydrophone probe for an array comprises a protection tip, a tip, a sensitization coating, an elastic fiber carrying cylinder, a support skeleton, an optical device placing shaft, a sound insulation protection sleeve, screws and glue injection grooves. The protection tip, the tip, the sensitization coating, the elastic fiber carrying cylindes and the support skeletonform a sound wave pickup portion of the probe, and the sound wave pickup portion of the probe is used for carrying and protecting sensitive optical fibers and is good in hydrophobicity and sonolucency. The optical device placing shaft, the sound insulation protection sleeve and the glue injection grooves form a protection portion of a probe optical device, and the protection portion of the probe optical device is good in pressure resistance. Bend insensitive fibers with small bending diameters and an optical device with a small size are selected for the probe, an optical device placing structure in a marble pillar form is employed, and a fixing flange is designed on the sound insulation protection sleeve. The interferometric fiber optic hydrophone probe for an array greatly saves space usage of an optical device, achieves miniaturization of a probe, enables the volume of the fiber optic hydrophone to be smaller when the fiber optic hydrophone organizes an array, and is higher in maneuverability.

The invention relates to a multiband antenna and a communication device with the multiband antenna. The multiband antenna is used for a communication device and comprises a medium substrate, a grounding part and a radiation metal part. The medium substrate comprises two surfaces. The grounding part comprises a first grounding surface, a second grounding surface and a connecting metal wire; the first grounding surface of the grounding part is positioned on one surface of the medium substrate and has a first connecting point and a short circuit point; the second grounding surface is close to the first grounding surface and has a second connecting point; one end of the connecting metal wire is connected with the first connecting point and the other end is connected with the second connecting point; and at least one part of the connecting metal wire is positioned on one surface of the medium substrate. The radiation metal part is positioned on one surface of the medium substrate and is not overlapped with the first grounding surface; and the radiation metal part comprises a radiation section and a feed-in section, wherein one end of the radiation section is connected to the short circuit point, and the other end is an open end; one end of the feed-in section is connected to a signal source, the other end is an open end, and the distance between the open end and the radiation section is less than 3mm.

The invention relates to a resonator and a bandpass filter, belonging to the field of an electric device. The resonator comprises a capacitor and an inductor which form parallel connection; the capacitor has a large-area flat plate-type embedded type capacitor structure for adding a dielectric layer in metal layers as polar plates; the inductor has a planar structure, and is used as a polar plane of the capacitor; and one end of the inductor is led out and is connected with an external circuit and the other end thereof is connected with the other polar plane of the capacitor. The bandpass filter is formed by coupling an external capacitor or an external inductor with at least two resonators. The resonator forms a resonance circuit by integrating the inductor and capacitor; a method which is same with the traditional embedded type capacitance technology is used for embedding the resonance circuit into a printing circuit board, so the inductor and the capacitor can be simultaneously integrated into an organic base plate layer, and an additional organic base plate layer is not needed to contain the inductor, thus achieving the purpose of miniaturization.

The invention relates to a collimation lens and a laser radar transmitting device which applies the collimation lens. The collimation lens comprises a first optical lens and a second optical lens, wherein the first optical lens is a self-focusing optical lens, and the second collimation lens is a positive optical lens. The laser radar transmitting device which applies the collimation lens is characterized in that a laser light beam transmitted by a laser passes through the first optical lens and the second optical lens in sequence to be injected to a galvanometer, the galvanometer vibrates according to a Lissajous curve, and an object to be tested can be quickly scanned. The self-focusing optical lens in the collimation lens can shape an input light beam, the divergence angle of an outputlight beam is small, and light field evenness is high. The focal length of the self-focusing optical lens is short, the axial packaging length of the collimation lens can be reduced, and a miniaturization purpose is realized. Then, a long focal length optical lens with optical convergence capacity is adopted to carry out collimation on a laser light beam emitted from the self-focusing optical lens, and a good collimation effect can be achieved. Therefore, the laser radar which adopts the collimation lens can exhibit long detection distance and high spatial resolution.

The invention discloses a high-PFC constant current control device without loop compensation and a voltage converter. The device comprises an automatic gain controller, of which the input end is an AC input voltage sampling signal of a primary side voltage sampling network, and the output end outputs a signal which is the same and of the same frequency with the input voltage but constant in amplitude; a peak current control comparator which has positive and negative input ends and output ends, wherein the negative input end is connected with the output end of the automatic gain controller, and the positive input end is connected with the positive end of a primary side current sensor resistor; a clock signal generator, of which the input end is a DC voltage sampling signal of an auxiliary winding voltage sampling network and the output end outputs a clock signal, the frequency of which is in direct proportion to a DC sampling voltage; and a trigger which is used for receiving the clock signal and a comparison signal output by a peak circuit control comparator and controlling the connection or disconnection of a power switch tube based on the clock signal and the comparison signal. The constant current control device can realize high PFC and output constant-current control without light coupling and loop compensation.

The invention relates to a liquid metal fractal antenna and a preparation method and application thereof. The method for conveniently and rapidly preparing the fractal antenna by the aid of the fingering effect, of the liquid metal, excited by the hydrogen peroxide is obtained. The liquid metal fractal antenna comprises a radiation patch which comprises a dendritic composite fractal structure formed by the liquid metal. According to the liquid metal fractal antenna and the preparation method and the application thereof, the fluidity, the electrical conductivity and the deformability of the liquid metal are fully used, the liquid metal fractal antenna is formed and prepared at one time on the basis of the fractal structure formed through excitation, and the problems that the existing fractal antenna is difficult to prepare and cannot be repaired by itself and bent freely are solved.

The invention discloses an ultra-thin LED lamp and a production technology thereof. The LED lamp is characterized in that a radiating lamp body, a rear cover plate, a diffusion plate and a light guide plate are included, the radiating lamp body is provided with a light-emitting face, the rear cover plate is connected and matched with the radiating lamp body, the diffusion plate and the light guide plate are sequentially arranged between the radiating lamp body and the rear cover plate from bottom to top, the light guide plate is sleeved with a flexible LED substrate, the periphery of the flexible LED substrate is evenly provided with LED lamp beads, the front side of the light guide plate is a highlight mirror corresponding to the diffusion plate, the back side of the light guide plate is an uneven grid, and the difference of convex and concave sections is 0.05-0.3 mm. The LED lamp is low in cost, a few of materials are used, production and assembly are easy, the light guide plate has various light reflection functions to meet various requirements of light distribution, LED light rays are fully used, light loss is reduced to the minimum, the whole LED lamp is low in weight, and the aim of miniaturization is achieved.

The invention provides a composite network microwave device and an antenna. The composite network microwave device comprises a microwave device cavity with a first cavity and a composite microwave network arranged in the microwave device cavity, wherein the composite microwave network includes a first microwave network and at least one second microwave network, the microwave device cavity is internally provided with at least two partition plates, each partition plate is provided with a giving-way groove, and two adjacent partition plates are oppositely arranged and define a second cavity in the first cavity; and the second microwave network is arranged in the second cavity, and the first microwave network is arranged in the first cavity and penetrates into the second cavity from the giving-way groove so as to be intersected and electrically connected with the second microwave network. The second microwave network and the partition plates can form a strip line structure, and the electric field of the second microwave network is distributed in the second cavity defined by the two partition plates, so that the anti-interference ability of the second microwave network can be improved,and thus the signal transmission between composite microwave networks is facilitated.

The invention provides a small helical antenna, which relates to an antenna, and solves the problem of large volume of the existing helical antenna. The small helical antenna is formed by the winding of a helical wire; one end of the helical wire is connected with one end of an impedance transformer; the number of helical turns of the helical antenna is at least one; the helical climbing angle ofthe helical antenna is from 5 degrees to 20 degrees. The invention is suitable for satellites, airships, ballistic rockets, and the like and is applied to emitting or receiving circular polarization electromagnetic wave signals.

The invention discloses a broadband miniaturized patch antenna, which belongs to the field of wireless communication. The antenna comprises an upper layer medium substrate, a radiation patch disposedat the center of the front face of the upper layer medium substrate, a plurality of parasitic patches arranged at the periphery of the upper layer medium substrate, a resistor impedance surface (RIS)disposed at the back face of the upper layer medium substrate, and a coaxial cable. The invention is advantageous in that through the introducing of the resistor impedance surface (RIS) and the coplanar parasitic patches, good direction consistency and miniaturization can be provided under the prerequisite that bandwidth is wide.

The invention relates to a multi-frequency transmission base station antenna which comprises a low-frequency antenna unit and a plurality of high-frequency antenna units. The plurality of high-frequency antenna units are nested and distributed in the low-frequency antenna unit, and the low-frequency antenna unit comprises a radiator with a periodic resonance gap. Compared with the prior art, the antenna is small in size, capable of achieving multi-band co-location coexistence and the like.

The invention belongs to the field of medical equipment, and discloses a neutron capturing treatment system. The neutron capturing treatment system comprises the components of an ion beam generating system which is used for supplying a stable ion beam; ion beam switching systems which are used for adjusting the direction of the iron beam to different directions, wherein at least two ion beam switching systems are arranged; neutron treatment systems which are used for irradiation treatment in different directions, wherein at least two neutron treatment systems are arranged and are in one-to-onecorrespondence with the ion beam switching systems; and treatment chambers, wherein each treatment chamber comprises at least two neutron treatment systems in different directions. According to the neutron capturing treatment system, the ion beam generating system utilizes a linear accelerator for performing ion acceleration; the ion beam switching system utilizes a deflecting magnet for performing ion beam direction adjustment; and the neutron treatment systems realize cooperation of the neutron treatment systems with different irradiation directions for use. Under a precondition that high treatment effect is ensured, miniaturization can be easily realized. The neutron capturing treatment system can be conveniently constructed in an existing hospital.

An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, and a driving assembly. The movable assembly is configured to be connected to an optical element. The movable assembly is movable relative to the fixed assembly. The optical element has an optical axis. The driving assembly is configured to drive the movable member to move relative to the fixed assembly.

The invention relates to a low-profile base station antenna radiation unit and an antenna. The low-profile base station antenna radiation unit is characterized by comprising a radiation surface, a radiation arm, a feeding probe, feeding Baluns and a coaxial cable, wherein the radiation surface comprises two dipoles, the two dipoles are separated and are placed respectively along different polarization directions, two paths of polarization with +45 degrees and -45 degrees are formed along directions of +45 degrees and -45 degrees, the radiation arm is arranged on the radiation surface and employs a microstrip mode, coupling feeding is achieved on each dipole by the feeding probe, each dipole is provided with each feeding Balun, a lower end of the coaxial cable is connected with bottom parts of the feeding Baluns, and an upper end of the coaxial cable and upper ends of the feeding Baluns are welded at a feeding position of the radiation surface. By employing a polarization technology, an unbalanced feeding line such as a strong-coupling microstrip and a coaxial line is supported to feed, thus, the radiation unit has the characteristics of wide band, high gain, low loss, low profile and high anti-interference capability and has important market value, and the demand of miniature design of the base station antenna can be satisfied.