739results about How to "Improve antenna performance" patented technology

An antenna, including a planar dielectric substrate and a conductive ground plane formed on the substrate. A conductive monopole is formed on the substrate and has an end point located in proximity to a feed region of the ground plane. A conductive coupling element is formed on the substrate and is coupled to the ground plane at a coupling region of the ground plane. The coupling element is folded around the monopole.

An antenna device for transmitting/receiving RF waves to be arranged in a radio communication device, comprising: a carrier (10) having first and second surfaces carrying a radiating structure (20) on the first surface; a feed portion (25) being connectable to transceiver circuits of the radio communication device and being arranged on the carrier (10) and forming a part of the radiating structure (20); and a ground plane means. The carrier has, in a first plane essentially perpendicular to the first surface, a cross section where the first surface exhibits at least a first curved portion (12). Further, the carrier has, in a second plane essentially perpendicular to the first plane and essentially perpendicular to the first surface, a cross section where the first surface exhibits at least a second curved portion (11, 13). Moreover, at least two curved portions meet. Further a method for manufacturing an antenna device is disclosed. In the method, at least a part of the carrier is formed by means of a die having essentially the same shape as a portion of an inner wall of a housing of the radio communication device. Also a hand portable radio communication device, including an antenna device is disclosed.

Extendable ground arrangement for an antenna system in a radio communication device to be operating at within one or more frequency bands. The ground arrangement includes support means (1), e.g., a slide or flap, carrying conductive ground extension means (4). The support means has fastening means (5) for slidably or rotatably connecting the ground extension means to the radio communication device, wherein the ground extension means is adapted to radiate at at least said first frequency and to couple, e.g., capacitively, to main ground means located in the radio communication device adjacent to said first edge. When extended the extendable ground means provides improved gain and SAR reduction.

An antenna apparatus for a portable terminal having a main board is provided. The antenna apparatus includes a main antenna that electrically connects to a feed line of the main board. A metal frame is constructed as part of a case frame forming an exterior of the portable terminal The metal frame is divided into first and second parts that are separated. The first part electrically connects to the main antenna or to the main board feed line, and is designed to radiate. The second part electrically connects to a ground surface of the main board. The metal frame enhances overall antenna performance rather than causing degradation through interference.

A portable computing device is disclosed. The portable computing device can take many forms such as a laptop computer, a tablet computer, and so on. The portable computing device can include at least a single piece housing. The single piece housing can be machined from a single billet of material, such as a billet of aluminum. The single piece housing can include ledges with a surface receiving a trim bead and a cover. Corner brackets can be attached to the single piece housing to improve the damage resistance of the housing.

An antenna system is integrated into a cover or accessory and adapted to couple to an antenna in a host device to improve transmission and reception of signals. The antenna system can be passive or active, with the active antenna system designed to amplify coupled signals on the integrated antenna elements in the cover or accessory. Single or multiple frequency bands can be improved with the integrated antenna system, and multiple antennas in the host device can be coupled to and improved. The antenna system can couple to the existing antennas in the host device by capacitive coupling, i.e. no physical contact required, or a connector can be designed into the cover or accessory containing the integrated antenna system that makes contact to electrical ground of the host device or power supply signals or other control signals.

A wireless communication device is provided with a multipart case, having electrical interfaces that encourage the flow of radiation frequency ground current between case sections. The multipart case has a first planar groundplane section and a second planar groundplane section. For example, the multipart case design may be a slider, double slider, multiple hinge, flip, or swivel case. The second planar groundplane is substantially coplanar with the first groundplane in a case open position, and substantially bi-planar with the first groundplane in a case closed position. The wireless device also includes an antenna located adjacent the second groundplane section first end. A first and a second interface electrically connect the first groundplane section to the second groundplane section second end (the end opposite the antenna).

Regardless of a user's hand holding condition, it is possible to obtain excellent antenna performance in both of folded and unfolded calling conditions. A folder type mobile radio apparatus includes an upper case 1301 having a first antenna element made of a metal plate 1305 , a lower case 1302 having a second antenna element made of a circuit board 102 , a hinge portion 1303 pivotably connecting the upper and lower cases 1301 and 1302 , a first circuit board 101 having a ground pattern provided in an end side near the hinge portion 1303 in the lower case, an antenna switching unit 103 for selecting one of a first feed means for feeding the first antenna element for the radio circuit 1314 on the first circuit board 101 or a second feed means for feeding the second antenna element.

The invention provides an antenna structure, a mobile terminal and an antenna mode switching method, wherein the antenna structure of the mobile terminal comprises an antenna unit, a first sensor, a second sensor and a switching control circuit; the antenna unit comprises an upper branch antenna, a first lower branch antenna and a second lower branch antenna of which the deployment positions are not overlapped mutually; the first sensor is used for detecting whether the first lower branch antenna is blocked and for outputting a first detection result; the second sensor is used for detecting whether the second lower branch antenna is blocked and for outputting a second detection result; and the switching control circuit is connected between a radio frequency front end of the mobile terminal and the antenna unit and used for controlling the connection and disconnection among various antennae in the radio frequency front end and the antenna unit. With adoption of the antenna structure, the problem that the signal reception capability of the mobile terminal is low when the lower branch antenna is blocked can be solved, the antenna property of the mobile terminal is improved and therefore the user experience is improved.