36results about How to "Guaranteed Radiation Efficiency" patented technology

A mobile device comprises a medium substrate, a grounding member, a signal source, a first conductive frame, a second conductive frame, a third conductive frame, a short circuit portion, a feed-in portion, a first radiation portion and a second radiation portion. The first conductive frame, the second conductive frame and the third conductive frame are separated mutually; the second conductive frame is coupled to the grounding member through the short circuit portion; the first radiation portion is coupled to the feed-in portion and has an open end which is close to the second conductive frame; and the second radiation portion is coupled to the feed-in portion and has an open end which is close to the third conductive frame. An antenna structure is at least formed by the feed-in portion, the first radiation portion, the second radiation portion, the second conductive frame and the short circuit portion jointly. The mobile device has dual advantages of improving external beauty and maintaining antenna radiation efficiency, and the mobile device is very suitable for being used in various miniaturized mobile communication devices.

The invention relates to a smart watch, which comprises a display assembly, a metal outer frame provided with an opening, a printed circuit board, a radio frequency port and a coupling feed part. The display assembly is positioned at the opening part of the metal outer frame and encloses an accommodating space inside the metal outer frame together with the metal outer frame. The printed circuit board is arranged in the accommodating space. A gap is reserved between the printed circuit board and the metal outer frame. The radio frequency port is arranged on the printed circuit board. The coupling feed part is arranged in the gap and is connected with the radio frequency port so as to be coupled and connected to the metal outer frame. The radio frequency port is used for enabling the coupling excitation of the metal outer frame via the coupling feed part so as to form an antenna radiation body based on the metal outer frame. By means of the above smart watch, not only the radiation efficiency of an antenna is ensured, but also the dimension and the weight of the antenna are effectively reduced. Meanwhile, the lightening and thinning development of the smart watch is realized. Moreover, the full-metal appearance design of the smart watch is enabled.

An ultrahigh frequency electronic label used for metal material surface comprises a substrate, a chip of the electronic label placed on the same surface of the substrate, a feeder line and an antenna receiving/emitting surface, wherein, the substrate surface is the front of the electronic label; an antenna grounding surface is placed on the other surface of the substrate, and the substrate surface is the back of the electronic label; the antenna receiving/emitting surface on the front is connected with the antenna grounding surface on the back through a short circuit groove to form a microstrip antenna; the chip is connected with the antenna receiving/emitting surface through the feeder line; grounding end of the chip is connected with the antenna grounding surface on the back via a through hole; the antenna grounding surface on the back is in direct contact with the surface of a metal material using the electronic label. As the self back of the electronic label is the grounding surface, the shielding effect of the metal material surface does not need to be considered completely. Due to the short circuit groove, the area of the microstrip antenna can be reduced by about a half. Therefore, the size of the electronic label can be reduced.

The embodiment of the invention provides an antenna assembly and an electronic device with a curly screen, and the electronic device comprises a mobile phone, a tablet personal computer and other mobile or fixed terminals with antennas. In the electronic device provided by the embodiment of the invention, an antenna radiator is located on a metal top frame or a metal bottom frame of the electronicdevice, and the extension branch knot extends into the electronic device and is connected with the antenna radiator, so the length of the antenna is increased, and the antenna radiation efficiency isensured; the problem that the length of the antenna which can be arranged on the mobile phone is insufficient due to the fact that the metal frame which can be used as the antenna is reduced in the existing mobile phone is solved.

The invention discloses a low profile cross-shaped vibrator for a multi-frequency base station antenna. The vibrator comprises a horizontal feed medium plate, two vertical feed medium plates and fourantenna vibrator arms. The two vertical feed medium plates are respectively a -45 DEG vertical feed medium plate and +45 DEG vertical feed medium plate. Two sides of the upper ends of the two verticalfeed medium plates are respectively provided with a notch matched with the vibrator arm. An end portion of an end of each antenna vibrator arm has a channel matched with thickness of the vertical feed medium plate. One end of the antenna vibrator arm is clamped in the notch of the vertical feed medium plate, and the notch of the vertical feed medium plate is also clamped in a channel on the end of the antenna vibrator arm. A microstrip circuit is disposed on the front surface of the horizontal feed medium plate. The horizontal feed medium plate has a cross-shaped groove matched with the two vertical feed medium plates. The cross section of a radiation arm of the vibrator is relatively small, and blocking of a high frequency vibrator can be effectively reduced, thereby reducing interference to the high frequency vibrator.

The invention brings forward a mobile terminal comprising a metal frame, a metal support used for installation of a display screen and an antenna radiation body. The metal support is installed in the metal frame, and at least two edges of the metal support are matched with the corresponding edges of the metal frame. A metal ring is formed by the non-matching edges on the metal support and the edges, which are corresponding to the non-matching edges on the metal support, of the metal frame together. The metal ring is arranged in the projection area of the antenna radiation body. The mobile terminal is characterized in that the metal ring is provided with a grounding device which is connected with the reference ground of the mobile terminal. The objective of the mobile terminal is to solve a problem of strong coupling between the metal ring structure and the antenna radiation body in the mobile terminal so that antenna radiation efficiency is guaranteed.

The invention provides an electronic device including a metal casing, a first opening, a first metal wire harness, a first grounding point and a first current zero point. The first opening penetrates through the metal casing. The first metal wire harness is located in the first opening. A first end of the first metal wire harness is electrically connected with a side edge of the first opening. A second end of the first metal wire harness is provided with a first feed-in point. The first grounding point and the first current zero point are located on the side edge of the first opening. The metal casing forms a first annular antenna through a first stimulating path from the first feed-in point to the first grounding point so as to receive or transmit a first radio-frequency signal.

The invention discloses a small-size broadband antenna, and the antenna comprises a radiator, an insulating dielectric substrate, and a metal back cavity. The metal back cavity is a U-shaped cavity which is formed by one lower bottom surface and two opposite side walls (left and right). The insulating dielectric substrate covers a top surface opening of the metal back cavity. The radiator is shaped like a plane, and is printed on the upper surface of the insulating dielectric substrate. The radiator consists of two fan-shaped units and two microstrip lines. The top points of the two fan-shaped units form feed points of the radiator. The two fan-shaped units are symmetrically distributed at the left and right sides of the insulating dielectric substrate, and the feed points of the two fan-shaped units are opposite and are separated by a certain distance. Each microstrip line is a bent extending line. Two ends of each microstrip line are respectively connected to the bottom end points of the two fan-shaped units at the same side. The two microstrip lines are symmetrically distributed at front and back sides of the insulating dielectric substrate. According to the invention, the size of the antenna is reduced, and the antenna meets the detection requirements of a system for a target.

The invention discloses a dual-band antenna, which comprises a bottom plate reflecting surface, a first dielectric plate and a second dielectric plate, wherein the first dielectric plate and the second dielectric plate are arranged in an intersection manner and are arranged on the bottom plate reflecting surface; a first vertically polarized pole is arranged on the first dielectric plate; the first vertically polarized pole comprises a first radiator and first antenna ground; a second horizontally polarized pole, a third vertically polarized pole and a fourth vertically polarized pole are arranged on the second dielectric plate; the second horizontally polarized pole comprises a second radiator and second antenna ground; the third vertically polarized pole comprises a third radiator and third antenna ground; the fourth vertically polarized pole comprises a fourth radiator and fourth antenna ground; the first pole and the second pole form a dipole which works on a first frequency band; and the third pole and the fourth pole form the dipole which works on a second frequency band. According to the dual-band antenna, the interference among the poles can be avoided under the condition of not adopting an isolator; and meanwhile, the radiation efficiency of the antenna can also be ensured, so that the communication performance of the antenna is effectively improved.

The invention provides a terminal with a reconfigurable antenna. The terminal comprises a non-grounding metal frame, an alloy bottom plate, a feed source, a suspension metal body, a first grounding circuit and a second grounding circuit, wherein the feed source is connected with the non-grounding metal frame, the non-grounding metal frame is connected with the suspension metal body, the suspensionmetal body serves as a suspension reference ground, the first grounding circuit comprises a first control switch and a first grounding point, the first signal end of the first control switch is connected with the non-grounding metal frame, the second signal end of the first control switch is connected with the first grounding point, the first grounding point is used for connecting the alloy bottom plate, the second grounding circuit comprises a second control switch and a second grounding point, the first signal end of the second control switch is connected with the suspension metal body, thesecond signal end of the second control switch is connected with the second grounding point, and the second grounding point is used for connecting the alloy bottom plate. According to the terminal provided by the invention, the reconstruction of the antenna radiation direction in the narrower and narrower trend of the clearance zone is realized, and the omnidirectional requirement of the antennain the terminal can be met.

The invention belongs to the technical field of antennas, and particularly relates to a coplanar Vivaldi antenna with an L-shaped slot line. The antenna comprises an antenna dielectric substrate, an antenna radiation module and a microstrip line-via hole feed structure; the antenna radiation module is divided by the L-shaped slot line to form an upper metal radiation patch and a lower metal radiation patch; the L-shaped slot line is composed of two sections of linear slot lines and a gradually-changed slot line; the linear slot line parallel to the horizontal central axis of the antenna dielectric substrate plays a role in connection in the L-shaped slot line, and forms the L-shaped slot line together with the linear slot line with an open circuit at the tail end and the gradually-changed slot line; the gradually-changed slot line is provided with a trumpet-shaped opening, is symmetrical about the horizontal central axis of the dielectric substrate and is in exponential gradual change, and the microstrip line is coupled with a linear slot line playing a connecting role in the L-shaped slot line. Impedance matching of the antenna at low frequency is improved through a simple structure, the working frequency band of the antenna is remarkably expanded, miniaturization of the antenna is achieved, and meanwhile the radiation efficiency of the antenna is guaranteed.

The invention discloses a mobile terminal and a method for improving an antenna performance of a mobile terminal. The mobile terminal comprises a PCB, a support frame, an antenna, and a parasitic branch. The support frame for installing the antenna is installed on the PCB by a conductive connecting element and is connected with the main board of the PCB. The antenna installed on the support frame is separated from the connecting element. The parasitic branch connected with the connecting element is arranged at one side of the antenna at an interval and is used for improving the antenna bandwidth and/or radiation wave beam direction. According to the mobile terminal, connection with the main board is realized by connection of the parasitic branch and the fixed support, thereby realizing successful leading out of the parasitic branch; and then on the basis of the routing way of the parasitic branch, layout is carried out to increase the antenna bandwidth and guarantee the radiation efficiency of the antenna.

A circuit board (1) and an electronic apparatus having the circuit board (1). The circuit board (1) comprises: an antenna (2); a conductive line integrated around the antenna (2); and a de-coupling resonance unit (4), wherein the de-coupling resonance unit (4) is arranged between the antenna (2) and the conductive line so as to isolate the antenna (2) from an electromagnetic field of the conductive line.

The invention relates to an antenna module and client front-end equipment. The antenna module comprises a substrate and an antenna, wherein the substrate has a first surface and a second surface opposite to each other, the antenna is arranged on the first surface and comprises more than three radiation units in rotational symmetry, the included angles between the adjacent radiation units are equal, each radiation unit comprises a first radiation group and a second radiation group which are in mirror symmetry, the first radiation group at least comprises a first radiation arm and a second radiation arm which are arranged at an interval, the length of the first radiation arm is greater than that of the second radiation arm, the second radiation group at least comprises a third radiation armand a fourth radiation arm which are arranged at an interval, the third radiation arm is arranged corresponding to the first radiation arm and used for radiating a first frequency band signal, and thefourth radiation arm is arranged corresponding to the second radiation arm and used for radiating a second frequency band signal. When the antenna module is used as a transmitting antenna, the characteristic of multi-band low directivity coefficient can be obtained, the gain of the transmitting antenna can be reduced, and the requirements of regional laws and regulations are met.

The invention discloses electronic equipment. The electronic equipment comprises an equipment main body which is provided with a display unit; a fixing part which is connected with the equipment main body, and can be used for fixing the electronic equipment at the first position of a user; a battery which is arranged on the fixing part, is electrically connected with the equipment main body, and is used for supplying power to the equipment main body; and a wireless receiving-transmitting unit which is arranged on the fixing part, is connected with the equipment main body, and is used for receiving and transmitting signals. Through adoption of the electronic equipment provided by the invention, the technical problem of low radiation efficiency of the wireless receiving-transmitting unit due to great interference of a display screen to the wireless receiving-transmitting unit in the electronic equipment in the prior art is solved. The technical effect of increasing the radiation efficiency of the wireless receiving-transmitting unit is achieved.

The invention relates to the technical field of water disinfection and purification. The embodiments of the invention provide an ultraviolet oxidation water purification method and device. The methodincludes the following steps: emitting ultraviolet light of 253.7 nm used for being reacted with an oxidizing substance and ultraviolet light of 185 nm used for radiating to to-be-purified water basedon a low-voltage ultraviolet lamp so as to generate hydroxyl radicals to oxide organic matters in the to-be-purified water, wherein the low-voltage ultraviolet lamp is sealed in a quartz glass sleeveand the space between two layers of quartz glass of the quartz glass sleeve is filled with inert gas and/or nitrogen. In this way, the ultraviolet oxidation water purification method and device realize that no oxidizing substance is added in a water purification process and can ensure the radiation efficiency and water purification effect of the ultraviolet light.