42results about How to "Improve antenna radiation efficiency" patented technology

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).

A magnetic member is interposed and arranged between an antenna element and a printed circuit board, and an air member or a dielectric member is interposed between the antenna element and the magnetic member. The magnetic member is constituted of a nanogranular structure in which magnetic nanoparticles with ferromagnetism are three-dimensionally dispersed and arranged in an insulating matrix substrate.

A portable wireless device realizing high-speed transmission in downlink communication in a used state that a foldable portable wireless device is held in a hand of the user and ensuring a high antenna radiation efficiency. In the portable wireless device, platy conductors (1, 3, 4) are arranged in the longitudinal direction on the back of a display section (35) of an upper case (5). The signal of a transmission circuit (25) is distributed by a power distributor (18). One signal is fed to a platy conductor (1) through a phase shifter (17) and the other is fed to the platy conductor (3) or the platy conductor (4) from a high-frequency switch (19) through a transmission/reception duplexer (20) or a transmission/reception duplexer (21). The high-frequency switch (19) selectively feeds power to either the platy conductor (3) or the platy conductor (4) according to the signal from a gravity sensor (26). The received signal is extracted by the transmission/reception duplexers (20, 21), amplified by a receiving circuit (22) and a receiving circuit (23), and multiplied by a predetermined weight coefficient by a demodulating section (24) and combined.

A vehicle slot antenna wherein an electro-conductive coating is applied to the surface of a glass ply. The peripheral edge of the conductive coating is spaced from the vehicle window edge and connected to a high conductive bus bar to define an annular slot antenna with low resistance loss and improved antenna efficiency. The slot antenna is fed by a thin conductive line located in the middle of the slot and parallel to the bus bar. The thin line along with the conductive coating and window frame form a coplanar waveguide (CPW). The CPW feed provides a convenient feed for the antenna at any point around the perimeter of the window slot and affords antenna tuning and impedance matching. The antenna design can use the characteristic impedance of the CPW line to match the impedance of the slot antenna to the impedance of a coaxial cable or other input impedance.

There are provided a high-permittivity dielectric raw material, an antenna device using the raw material and being useful as, especially, the built-in antenna device of a portable phone; a portable phone which can be reduced in weight, thickness and size, with an antenna radiation efficiency improved, and an electromagnetic wave shielding body for effectively shielding electromagnetic wave from an electric cooker.

A dielectric raw material A having carbons dispersed in a silicone rubber base material 1, wherein, in any one of dielectric raw materials A, 1) containing 150 to 300 pts.wt. of carbons per 100 pts.wt. of silicone rubber, 2) formed by crosslinking and molding a mixture of non-crosslinked silicone rubber, non-crosslinked organic polymer and carbons, and 3) formed by combining and blending at least two kinds of carbons having different shapes and selected from spherical carbon 2, flat carbon, carbon fiber with a specific aspect ratio, carbon nanotube and conductive carbon 3, carbons are unevenly distributed in a silicone rubber base material 1 or carbons are contained with at least part of them contacting each other.

The present invention relates to an antenna apparatus and an electronic device comprising the same. The antenna apparatus according to one embodiment of the present invention comprises an array antenna formed on a metal case of an electronic device, wherein the array antenna comprises at least two antenna elements, the at least two antenna elements may operate in the same frequency band. According to one embodiment of the present invention, it is possible to provide an antenna apparatus capable of reducing heat generation and increasing the radiation efficiency of an antenna.

The invention discloses a decoupling method and decoupling network of an MIMO antenna of a mobile communication system terminal. The decoupling network comprises an antenna 1 and a port 1 corresponding to the antenna 1, an antenna 2 and a port 2 corresponding to the antenna 2, and a coupling resonant cavity. The extra coupling resonant cavity is connected between the antenna ports and an equivalent-amplitude inverted-phase current is introduced into a coupling current for mutual cancelling and thus the port 2 does not receive the power form the port 1, thereby realizing decoupling. The antenna signal coupling elimination effect is good. The configuration is simple and the occupied system space resources are low, so that the isolation degree of the dual-antenna system can be improved, the antenna radiation efficiency can be enhanced, the space correlation of the antenna can be reduced substantially, and decoupling is realized.

A slot antenna in a vehicle glazing established between the surface of the vehicle portal for the glazing and the peripheral edge of an IR reflective coating that has a bus bar over the coating edge. The antenna slot is fed directly by a voltage probe and/or a conductive line located in the slot and parallel to the bus bar. Multiple voltage probes and conductive lines can support respective antennas. A second conductive line is parallel and cooperates with the first conductive line to form a coupled coplanar line that links to the antenna slot. The longitudinal location of the links and the length of the coplanar lines are adjusted to excite multiple frequency modes. Multiple antennas can be used to broaden overall bandwidth or to add additional frequency modes.

A multiband antenna with the broadband function has a radiator, a feed cable, a first extension conductor, and a second extension conductor. The radiator has a microwave substrate, a coupling conductor, a first conductor, a second conductor, a third conductor, and a connecting conductor. The coupling conductor is connected with a positive signal wire of the feed cable. The third conductor is connected with a negative signal of the feed cable for transmitting electrical signals. The radiator generates the multiband mode of the antenna. By connecting the first extension conductor and the second extension conductor with the radiator, the surface current distribution and impedance variation of the antenna can be effectively adjusted to achieve the broadband effect.

The invention relates to an antenna module and an electronic device applying the same. The antenna module is provided with a signal feed-in part, a grounding part and a first asymmetric winding line, wherein one end of the first asymmetric winding line is connected to the signal feed-in part; the other end of the first asymmetric winding line is connected to the grounding part; the first asymmetric winding line is not winding towards the inner wall; a signal is fed in by the signal feed-in part; and a first resonant mode frequency is stimulated by the first asymmetric winding line. The area of the antenna module provided by the invention is less than that of traditional panel antennas, and the antenna module can generate inductive effect so as to improve the radiation efficiency of the antenna. In addition, because the area of the antenna module is smaller, a metal electronic component in the electronic device can not be overlapped with a position of the antenna module so as to reducethe chance of mutual interference.

A multi-frequency, noise optimized active antenna consisting of one or several actively tuned antennas optimized over incremental bandwidths and capable of tuning over a large total bandwidth. One or multiple impedance transformers are connected to the antennas at an optimal location, with the transformers acting to reduce the impedance for optimal coupling to a transceiver/receiver. Active components can be incorporated into the antenna structures to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. The radiating elements can be co-located with a ferrite material and/or active components coupled to the element to tune across a wide frequency range.

The present disclosure relates generally to a multi-band antenna device and an electronic device having the same. An antenna device according to embodiments may include a first antenna and a second antenna. The first antenna may include a first ground terminal, a first feed terminal, and a first radiator. The second antenna may include a second ground terminal, a second feed terminal, a second radiator, and a conductor pattern electrically connected to the second ground terminal. The conductor pattern may be formed at a position capable of causing coupling with the first radiator. Other embodiments are possible.

The application provides an electronic equipment. The electronic equipment includes a shell, a sliding seat, a radio frequency module and a radiation module. The shell comprises a main body portion and an extension portion protruded at the end portion of the main body portion, the sliding seat is overlapped with the extension portion, one end of the sliding seat is abutted against the end portionof the main body portion, the radio frequency module is arranged in the shell, the radiation module is arranged on the sliding seat, the radiation module comprises multi-section metal sections arranged at intervals and a plurality of matching circuits, each matching circuit is electrically connected with one metal section, the matching circuits are all electrically connected with the radiation module to allow the multi-section metal sections to radiate different antenna signals, the sliding seat is slidingly connected with the extension portion, and in the process of sliding the sliding seat relative to the shell, the radiation module is gradually far away from or close to the shell along with the sliding of the sliding seat. The invention further provides a control method of the electronic equipment. The antenna radiation efficiency of the electronic equipment is improved.