1194results 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 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.

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.

A light-emitting element has a light-emitting layer and at lease one light-extracting portion. At least a partial part of the light-extracting portion is formed into a concave or convex surface for enhancing the efficiency of extracting light. Another light-emitting element has a light-emitting layer and a concave or convex surface for reflecting light emitted from the light-emitting layer toward one or more other surfaces of the light-emitting element through an inside of the light-emitting element.

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.