54results about How to "Realize Broadband" patented technology

An inverted F antenna and a radio device comprising the same. The antenna element comprises a grounding conductor plate and a conductor spaced from the grounding conductor plate, disposed above the grounding conductor plate, and made of a conductor at least part of which is generally spiral. A stab connects one end of the antenna element and the grounding conductor plate. A feeder connects a feeding point on the antenna element at a predetermined distance from the one end to an external circuit. The antenna element is secured to the grounding conductor plate through a holding member of a dielectric material.

The invention discloses a two-dimensional millimeter wave circularly-polarized wide-angle scanning phased-array antenna, and relates to the technical field of millimeter wave antennas. According to the technical scheme, an antenna radiation patch is connected with a rectangular parasitic patch through a high impedance matching microstrip line which is provided with a cross-carved equal length in the center and is used for carrying out impedance matching on the antenna, and a windmill-shaped microstrip radiation patch excitation equal-amplitude in-phase polarization orthogonal degenerate mode is manufactured on the symmetric center of a diagonal bisector of the corner of the antenna radiation patch; feed probes penetrate through the antenna dielectric layer and are connected with the antenna radiation patch through the four rectangular parasitic patches, the four feed probes 4 of each antenna unit feed through rotary feed structures which are equal in amplitude and sequentially differ by 90 degrees, and the windmill-shaped microstrip radiation patch is connected with rectangular blocks of the four rectangular parasitic patches of the four metallized probes for feed. feeding in equal-amplitude excitation with the phase difference of 90 degrees is performed in sequence to form circular polarization radiation, and the antenna arrays are arranged in a rectangular manner at equal intervals according to unit intervals to form an antenna array surface.

The invention relates to a variable-polarization balanced radar RF front-end device comprising two double-feed antennas, four quadrature couplers, two single-pole double-throw switches and microstrip lines. A transmitted signal is divided into two signals by a single-pole double-throw switch through a quadrature coupler, and then the two signals feed the two double-feed antennas via the quadrature couplers respectively. The isolating ends of the two quadrature couplers are connected to the symmetrical quadrature couplers respectively and are output selectively selected via the second single-pole double-throw switch. The device is simple in structure, low in cost and high in reliability, can easily realize the switching of two circular polarizations, improves an anti-interference ability, and solves, as a single-antenna system, problems of leakage cancellation, antenna reflection and partial coupling, and will be rapidly applied and developed in the field of short-range detection and small continuous wave radars.

The invention discloses an ultra-wide bandwidth planar miniaturization micro-strip antenna which comprises a medium plate, a radiation patch unit, a grounding plate and a micro-strip feeder line. The radiation patch unit and the micro-strip feeder line are arranged on the obverse side of the medium plate. The grounding plate is arranged on the reverse side of the medium plate. Through arrangement of the regular rectangular radiation patch unit, flow direction of current of a wide-band antenna is changed, and broadband and miniaturization of the wide-band antenna are achieved compared with the method that two stacked protruded grooves are formed in a rectangular gradual cutting corner radiation patch. Low-frequency stage band width is expanded, and the size of the wide-band antenna is reduced. The wide-band antenna can achieve ultra-wide bandwidth features within 3GHz-19GHz. The wide-band antenna is simple in structure, low in section, easy to install and integrate, and easy to process. The reflection loss of the wide-band antenna within the frequency band scope of 3GHz-19GHz is smaller than minus 10 decibels. In addition, the ultra-wide bandwidth planar miniaturization micro-strip antenna is convenient to operate and simple in structure, and has good application value.

A planar radiation element (2) is arranged on the ground surface (5) while spaced apart therefrom. The radiation element (2) resonates at predetermined low level wavelength lambda1 and high level wavelength lambda2. On the periphery of the radiation element (2), a feeding portion (3) to be connected with a feeding circuit and a pair of short circuit portions (7, 8) are provided. The feeding portion (3) is provided on one end side of the radiation element (2). The pair of short circuit portions (7, 8) are provided in the regions that are on the opposite sides along the circumferential edge direction of the radiation element (2) from the feeding portion (3) and give portions where the voltages of high level resonance respectively delivered from the feeding portion (3) to the short circuit portions (7, 8) become zero. The short circuit portions (7, 8) are extended to the ground surface (5) side and connected therewith. The radiation element (2) has an open end (6) on the other side, i.e.the side opposite to the feeding portion (3). Electric length of the radiation element (2) from one end side to the other end side (6) thereof is formed to be one half of the high level resonance wavelength lambda2 of the radiation element (2).

The invention discloses a multi-mode standardization module for the Internet of Things. By adopting a unified access authentication model including an antenna, multiple different wireless network communication modes can be achieved in a same chip, and modules can work in the specific mode according to user configuration. A whole framework of the unified access authentication model is composed of three module including an authentication module layer, a general protocol management layer and a key adaptation layer, wherein the authentication module layer and the general protocol management layer are achieved on an SIM card or chip, and the key adaptation layer is achieved on terminal equipment. The antenna achieves broadbandization and miniaturization by adopting a multi-branch-circuit structure and a coupled feeding technique. According to the multi-mode standardization module, multi-mode coexisting is achieved by sharing one antenna, the miniaturized onboard antenna is achieved, multi-mode application is achieved, novel Internet-of-Things equipment access authentication is achieved, and secure connection of the Internet of Things is guaranteed.

A surface mount antenna and an antenna module with small size and broadband are provided. In the surface mount antenna, the part ( a substrate upper part(41A) and a substrate side part(41B)(41C)) between a power supply radiating conductor(11) and a non-power-supply radiating conductor(12) is in the groove shape. The part in the groove shape is an air layer, thus being as the lower-dielectric-constant area. The area with the dielectric constant lower than that of the dielectric substrate 10 is arranged among the power supply radiating conductors, thus reducing the electromagnetic coupling amount among the radiating conductors, further making the resonant frequencies of all radiating conductors similar in the multiple resonance forming range to realize the broadband.

The invention discloses a broad band low profile conic sleeve monopole antenna which comprises a monopole (1), a conic top loading sleeve (2), a top loading disc (3), a floor (6), first short circuit probes (4), a second short circuit probe (5) and a radio frequency interface unit (8). The monopole (1) is placed perpendicularly to the floor (6). The top loading disc (3) is placed at the top of the monopole (1). The top loading disc (3) and the monopole (1) are connected through screws. The top loading disc (3) is used for top loading to the monopole (1). The top loading disc (3) and the floor (6) form a short circuit through four first short circuit probes (4). A conic sleeve is added to the monopole so that circular ring top loading is performed to the sleeve, and therefore impedance bandwidth of the antenna is broadened effectively and the dimension of the antenna is reduced.

The invention discloses an optically controlled polarization-reconfigurable monopole antenna. The optically controlled polarization-reconfigurable monopole antenna comprises a reflecting plate and a dielectric substrate, the dielectric substrate is fixed to the position above the reflecting plate through supporting structures, an antenna radiation unit, a parasitic unit, a microstrip line feed unit and optical switches are printed on the upper surface of the dielectric substrate, and an earth plate unit is printed on the lower surface of the dielectric substrate; the antenna radiation unit comprises a C-shaped monopole, and the C-shaped monopole is provided with a groove and L-shaped grooves; the parasitic radiation unit is located in the groove, and the optical switches are located at thejunction of the microstrip line feed unit and antenna radiation unit; and the optically controlled polarization-reconfigurable monopole antenna further comprises a coaxial feeder line unit, and the coaxial feeder line unit feeds electricity to the microstrip line feed unit through the dielectric substrate. The optically controlled polarization-reconfigurable monopole antenna is of a planar structure, radiates directionally by using the reflecting plate, has good directionality and can achieve a polarization-reconfigurable effect in three modes.

The invention discloses a back-feed type film digit television omnidirectional reception antenna comprising a medium substrate, and a single arm film copper foil and a feeder panel respectively attached on two side faces of the medium substrate; the single arm film copper foil is parallelly attached on the front side of the medium substrate in a spiral band shape in an anticlockwise winding mode; the width of the single arm film copper foil gradually increase from the start point, and the widest portion in the end point forms a suddenly-broken shape; the feeder panel parallelly fixed on the backside of the medium substrate is a single side clad copper plate; the distance between the clad copper plate and the film copper foil is 2-5mm; the clad copper plate shape is in a rectangular type, and the clad copper plate area size basically matches with the maximum cross section of the main radiation field ellipse sphere of the film copper foil; the feeding point of the film copper foil is arranged on the film copper foil anticlockwisely winding for 150-190 degrees from the start point; the feeder panel feeding output point is arranged in the intersection point between the feeder panel short edge central axis and the long edge proportion cutting line.

Provided is an RFID tag by which the communication distance is not shortened even when wireless communication is performed with a metal object and broadband and high gain are achieved. An RFID tag set and an RFID system are also provided. In an RFID tag (1), an antenna section (4) is arranged on a first dielectric substrate (3), a grounding conductive plate (2) is arranged between the first dielectric substrate (3) and a second dielectric substrate (5), and the electrical length of the antenna section and that of the grounding conductive plate are set different from each other.