1191results about How to "Improve Radiation Performance" patented technology

An electromagnetic surgical ablation probe having a conical hood reflector and method of manufacture thereof is disclosed. The disclosed probe includes a shaft assembly that has a coaxial feedline core having an inner conductor and an outer conductor separated by an insulating layer. A tubular catheter is disposed coaxially around the feedline and is configured to deliver coolant, such as saline or deionized water, to a coolant chamber at a distal end formed within the conical reflector. A radiating section disposed within the conical reflector may have a conical, cylindrical, or other suitable shape. A membrane disposed across a distal opening of the conical reflector seals coolant within the coolant chamber, and may conform to tissue contours during use. A resilient aperture may be included at the periphery of the conical hood. The shaft assembly may include an angled section, an adjustable section, and, additionally or alternatively, a malleable section.

A multi-band antenna includes a resonance frequency regulator, a ground device, a short-circuiting device and a feed-in line. The resonance frequency regulator provides a first resonance mode and a second resonance mode respectively corresponding to the first band and the second band. The ground device includes a main ground surface, a first ground regulator, and a second ground regulator. The main ground surface includes a first ground point corresponding to the first resonance mode, and a second ground point corresponding to the second resonance mode. The short-circuiting device has one end connected to the resonance frequency regulator, and the other end connected to the second ground point. The short-circuiting device has a feed-in point connected to the feed-in line for transmitting electromagnetic signals and the feed-in line connects with the first ground point.

The invention is directed to novel compositions and methods utilizing virion derived protein nanoparticles for delivery of medical imaging agents and therapeutic agents for the diagnosis and treatment of malignant and systemic diseases.

A telecommunication device includes a housing formed by gas-assist injection molding and having an inner wall, outer wall and a hollow space formed therebetween and receiving therein gas refrigerant. The hollow space has a plurality of vertical channels wherein the gas refrigerant cools the internal of the housing by natural convection within the vertical channels. A movable wall is disposed in the vertical channel for controlling a pressure rise occurring upon a temperature rise.

An antenna device of a portable terminal including conductive components is provided. The antenna device includes a first radiator connected to a power feeding unit of the portable terminal and a second radiator connected to each of the power feeding unit and a ground part of the portable terminal. At least one of the conductive components is connected to at least one the first radiator and the second radiator. The conductive components may be used as a radiator of the antenna device such that the antenna device may be easily installed within an inner space of a miniaturized and lightened portable terminal and the inner space of the portable terminal may be efficiently used.

The present invention provides a display apparatus that can achieve high durability by making the most of the function of the exhaust fans to effectively suppress the rise of the temperature. The display apparatus comprises a display panel for displaying images, a rear case covering a rear side of the display panel, and an exhaust fan disposed within the rear case, wherein the rear case includes a first air-hole area and a second air-hole area each provided with a plurality of air holes, the first air-hole area is located at a higher level than the second air-hole area with respect to a vertical direction with a spacing therebetween, and at least partially faces the exhaust fan, and an area surrounded by the first air-hole area, the second air-hole area and external common tangents thereof is a shielded area in which no air hole is provided.

A bulb-type LED lamp (1) has a bulb (3) mounted on a socket (5). A light source (7), comprising a plurality of LEDs mounted on a PCB (9), is arranged inside the bulb (3). The PCB (9) acts as and / or is connected to cooling means (21). The outer surface (15) of the bulb is formed both by light transmittable surface (22) and / or sub-areas (23) thereof and the cooling means (21), which cooling means extend from inside the bulb into the outer surface of the bulb. Surfaces are mutually flush at locations at the outer surface of the bulb where said surfaces of both the cooling means and the light transmittable sub-areas border each other. The spatial light intensity distribution of the lamp of the invention is significantly improved over the prior art bulb-type LED lamp.

A battery sheath having a radiation layer on its surface and a lithium polymer battery using the sheath are provided. The radiation layer improves radiation performance and mechanical strength of the battery, and also improves the response of a PTC device. The battery sheath comprises a metal layer having first and second surfaces, a radiation layer on the first surface of the metal layer, and a cast polypropylene (CPP) layer on the second surface of the metal layer. The lithium polymer battery has a PTC device electrically connected to a protective circuit module. The PTC device directly contacts the radiation layer of the battery sheath, thereby improving the response of the PTC device.

A flat loudspeaker having a back plate, a driver responsive to an electrical signal, an enhancer having a neck and a mouth, the neck attached to the driver and movable in accordance with the movement of the driver, a thin film membrane, the membrane attached to the enhancer, the membrane stretched over the frame, a frame for supporting the membrane and maintaining it in a taut state, and a rubber type adhesive for dampening the membrane resonances and for adhering the membrane to the frame. Clarity of sound can be further improved by including a plurality of sound breathers in the back plate of the speaker. For improved sound radiation capability, the size and the shape of the enhancer can be modified in various ways, including a frustoconical, parabolic, or bell-shaped enhancer. Dampening material may be provided in the space below or affixed to the membrane to improve sound quality.

The invention discloses a high-different frequency isolation broadband double-frequency base station antenna array, which comprises at least one high-frequency antenna unit, a low-frequency antenna unit and a floor board, wherein when one high-frequency antenna unit exists, the high-frequency antenna unit is placed at one side of the floor board, when multiple high-frequency antenna units exist, the high-frequency antenna units are placed at two sides of the floor board respectively, each high-frequency antenna unit comprises multiple oscillator arms and a Balun, the oscillator arms are connected through a distributed inductor, and feeding is carried out through the Balun; the low-frequency antenna unit is placed in the middle of the floor board and comprises multiple oscillator arms and a Balun, the oscillator arms are connected through a distributed capacitor, feeding is carried out through the Balun, the Balun is provided with a feeder line and an H-type microstrip branch, and the H-type microstrip branch is connected with the feeder line. In a condition of not cascading filters, high isolation in a condition in which the distance between the different-frequency antenna units is small and the floor board is small can be realized, insertion loss of a filter is avoided, a stable pattern in a broadband is realized, and due to a decoupling structure, the volume of an antenna unit is not added extraly.

The invention discloses a low-profile dual-polarization filtering magnetoelectric dipole antenna, and the antenna comprises an upper dielectric substrate and a lower dielectric substrate. A radiator structure is printed on the upper surface of the upper dielectric substrate, and a gap coupling feed network structure is printed on the lower dielectric substrate, wherein the radiator structure comprises four parasitic patches loaded with symmetrical gaps, and the parasitic patches are loaded with short-circuit probes. The gap coupling feed network structure comprises two groups of orthogonally arranged Y-shaped feed lines and a cross-shaped gap, and the cross-shaped gap is printed on a metal floor. The novel slot structure parasitic on the radiator increases the bandwidth and introduces a high-roll-off edge filtering effect, and the gap coupling feed network with a filtering function is combined to realize a good band-pass filtering characteristic and hardly introduce additional insertion loss.

A loudspeaker having a back plate, a driver attached to the back plate, the driver being responsive to an electrical signal, an enhancer having a neck and a mouth, the neck attached to the driver and movable in accordance with the movement of the driver, a thin film membrane, the membrane attached to the enhancer, the membrane stretched over the frame, a frame for supporting the membrane and maintaining it in a taut state, and a rubber type adhesive for dampening the membrane resonances and for adhering the membrane to the frame. Clarity of sound can be further improved by including a plurality of sound breathers in the back plate of the speaker. For improved sound radiation capability, the size and the shape of the enhancer can be modified in various ways, including a frustoconical, parabolic, or bell-shaped enhancer.

The invention discloses a passive radiation refrigeration composite material layer which coats a substrate to form a composite layer structure of the substrate and a passive radiation refrigeration layer, and the passive radiation refrigeration layer reflects visible light and near-infrared light in sunlight and dissipates heat through an atmospheric window in an infrared radiation form. The invention discloses a preparation method of the passive radiation refrigeration composite material layer, and the method comprises the following steps: dissolving resin in a volatile solvent, dispersing nanoparticles in the volatile solvent, and mixing at normal temperature to form a suspension; dissolving a functional polymer in the suspension, and uniformly mixing to form a coating solution; and coating the substrate with the coating solution to volatilize the solvent so as to form the passive radiation refrigeration layer on the surface of the substrate. The material disclosed by the invention has a simple single-layer structure, can simply coat the surfaces of various substrates like a coating, can reduce the incompatibility among multi-layer structures and reduce the cost, and is simple and convenient in preparation method, easy to operate and low in cost.