52results about How to "Realize Broadband" patented technology

The embodiment of the invention discloses a wideband dual-polarization array antenna and a base station, wherein the wideband dual-polarization array antenna includes an antenna unit, a metal reflection board, and a metal separation board, the antenna unit being separated by the metal separation board. The antenna unit contains a feed piece and a double-layer radiation patch. A first end of the feed piece is configured at the bottom radiation patch of the double-layer radiation patch so as to form a feeding point, and a second end of the feed piece is connected to a feed structure so as to form a feeding port. The bottom patch of the double-layer radiation patch is provided a slot at the upper surface thereof. A hole is opened within the slot to fixedly connect the fist end of the feed piece in order to form capative reactance. The embodiment of the invention form capative reactance by providing a slot on the upper surface of the bottom patch of the double-layer radiation patch of the array antenna, which enables an easy resonance in each radiation patch of the double-layer radiation patch of the array antenna. The array antenna can realize wideband with efficiency.

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 a time division-synchronization code division multiple access (TD-SCDMA) and time division-long term evolution (TD-LTE) intelligent antenna multi-channel broadband calibration network. The multi-channel broadband calibration network (11) is characterized in that: a micro-strip coplanar waveguide structure is adopted; the two ends of a coupling line of a coupler are loaded with crossed coupling lines; and a metal shield box is eliminated. An entire structure comprises a plurality of power dividers, a plurality of directional couplers and an installation plate (12), wherein each power divider and each directional coupler adopt micro-strip coplanar waveguide structures (2); crossed coupling lines (5) are loaded between coupling lines of each directional coupler; a radiofrequency cable core is welded with each directional coupler through a through hole on the installation plate and a metallized via hole on the directional coupler; the sheath of a cable is welded with a back face grounding layer; one side, in the same direction as an antenna, of the installation plate is provided with a metal flange (14); and the installation plate is arranged on an antenna bottom plate (15). The network has the advantages of high electric index, simple structure and contribution to mass production.

The invention relates to a mini broadband micro-strip array antenna. The antenna comprises a radiation array, the radiation array comprises multiple radiation paster units in an array structure of equal interval, in each radiation paster unit, rectangular grooves are formed in a rectangular paster in the axially symmetrical manner along the narrow side direction, and the top and bottom ends of the radiation paster unit include identical step-shaped gradually changed rectangular corner-cut structures respectively. Via the radiation array, the array antenna can only comprise the radiation array, a first dielectric plate, a metal ground plate, a second dielectric plate, pin and a feed network, wherein the radiation array is placed at the upper surface of the first dielectric plate, the feed network is placed at the lower surface of the second dielectric plate, the metal ground plate is placed between the first dielectric plate and the second dielectric plate, and the radiation array is connected with the feed network via punching by the pins. The current direction of the microstrip antenna is changed, multiple resonance frequency points can be added, and the broadband and mini design can be realized.

The invention discloses an ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna, and mainly solves the problems of wide frequency band, omnidirectional horizontal polarization and miniaturization of an antenna cannot be satisfied in the prior art. The ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna comprises a radiation unit (1), a feeding network (2) and a dielectric plate (3), wherein the radiation unit (1) is a 16-element connecting type Vivaldi antenna array which is formed by a Vivaldi unit around a center in a rotating manner; the feeding network (2) adopts a one-into-sixteen broadband Wilkinson power divider and a coupling microstrip feeder line; electromagnetic energy is coupled to the radiation unit through the coupling microstrip feeder line; the dielectric plate (3) adopts a Kangtaini (a Chinese brand name)dielectric plate with a dielectric constant of 2.55; the radiation unit and the feeding network are printed on the upper and lower surfaces of the dielectric plate; and the centers of the radiation unit and the feeding network coincide with that of the dielectric plate. The circular array antenna has the characteristics of ultra wide band, omnidirectional horizontal polarization and miniaturization, and can be used in a full-coverage ultra-wide-band wireless communication system in the peripheral regions.

A broadband planar printed dipole antenna is provided with two large dipole arms (3a and 3b), two small dipole arms (4a and 4b), exponential type gradient line feed microstrip lines (1), connecting lines (5) for connecting the small dipole arms with the feed microstrip lines, and a medium plate (2). The innovation of the antenna structure is to adopt a two-layer printed circuit structure of front and back surfaces of the medium plate: two pairs of large dipole arms (3a and 3b) and small dipole arms (4a and 4b) and the exponential type gradient line feed microstrip lines (1) are printed on the front and the back surfaces of the medium plate (2), so that the wide frequency band matching property and a stable directional diagram are realized; when the standing-wave ratio is less than 2, the band width can achieve 70%, and the directional diagram in the working frequency section is stable. The antenna has the characteristics of small size, light weight, facilitation of integration in various planar devices and simple feed system. As a result, the antenna has the advantages of low production cost, planar structure, wide working frequency band and excellent promotion and application prospect.

The invention discloses a circularly-polarized broadband base station antenna. The circularly-polarized broadband base station antenna comprises an antenna radiation unit, a feed structure and a baffle board, wherein the antenna radiation unit is fixed to the baffle board through the feed structure, the feed structure is perpendicularly placed between the antenna radiation unit and the baffle board, and the antenna radiation unit comprises a main radiation ring, a spurious ring and a radiation unit dielectric substrate. Due to the facts that grooving is carried out at an appropriate position of an annular structure to achieve circular polarization, the spurious ring is used for strengthening the circularly-polarized bandwidth, and a high-impedance bandwidth is obtained through micro-strip and gap coupling feed, and the circularly-polarized broadband base station antenna is stable in radiation pattern, the gain can reach 9dBi, and the circularly-polarized broadband base station antenna is suitable for serving as an antenna of a mobile communication base station.

The invention discloses a broadband polarization reconfigurable antenna based on a cross dipole and a parasitic unit. The antenna comprises a cross dipole radiation unit, a parasitic radiation unit, achip capacitor, a 3/4 feed square ring, an insulating support column, a coaxial feed line unit, a reflecting plate, a PIN diode switch, a microstrip line feed unit and a dielectric substrate; the cross dipole radiation unit, the parasitic radiation unit, the microstrip line feed unit, the embedded PIN diode switch and the chip capacitor are etched on the dielectric substrate. A basic unit of thecross dipole is a butterfly-shaped unit with two orthogonal arms, and the two arms of the butterfly-shaped unit are connected through the 3/4 feed square ring; slits are formed in the outer sides of the joints of the feed square ring and the arms; and the PIN diode switch is arranged between the microstrip line feed unit and the cross dipole unit. The antenna has the advantages of small size, light weight, simple structure, wide ultra-wideband and the like, and three working modes can be achieved by controlling on-off of the two PIN diode switches.

The invention discloses a low profile broadband antenna and relates to the field of the antenna structure. The low profile broadband antenna comprises a dielectric substrate (105), a microstrip transmission line (103) arranged on the dielectric substrate, a first dipole radiation unit (102), a second V-shaped parasitic radiation unit (104) and a partial ground plane (101) arranged at a back surface of the dielectric substrate, wherein the first dipole radiation unit (102) is composed of S-shaped (1021) and inverted-S-shaped (1022) structures of which two arms are bent, the first dipole radiation unit (102) is directly connected with the microstrip transmission line (103) for feeding, the second V-shaped parasitic radiation unit (104) is coupled with a gap with the first dipole radiation unit (102) for feeding, the microstrip transmission line (103) is connected with an inner conductor of a connector, and an outer conductor of the connector is connected with the partial ground plane (101). The low profile broadband antenna has characteristics of low profile, small size and easy integration, can be mixed with reactive components and has broad application prospects.

The invention discloses a broadband cavity-backed double-slot microstrip antenna which comprises a dielectric substrate (1) and a metal back cavity (6) equal to the dielectric substrate (1) in length and width. The metal back cavity (6) is a cuboid without the upper surface and the front surface, the top layer of the dielectric substrate (1) is a shielding conductor, a first slot (2) and a second slot (3) in mutually parallel are etched on the shielding conductor, the length of the first slot (2) is smaller than that of the second slot (3), a microstrip feeder line and a polygonal radiating patch are made on the bottom layer of the dielectric substrate, and the metal back cavity has a certain height and is connected with the shielding conductor, so that the antenna has directional radiating characteristics. Position, area and number of the slots, height of the cavity and the like have influences on performances of the antenna, so that a super-broadband directional antenna with better performances can be obtained by changing the structural parameters.

The invention relates to a broadband directional coupler comprising a cavity in which a conductor mainline and a conductor subline are arranged; two ends of both the conductor mainline and the conductor subline are respectively connected with a connector; the section shape of both the conductor mainline and the conductor subline is round; the conductor mainline and the conductor subline are divided into a conductor main body and conductor connecting bodies; two ends of the conductor main body are respectively connected with the conductor connecting bodies; and the other ends of four conductor connecting bodies, which are not connected with the conductor main body are respectively connected with the connector. The multi-section, concentric-round, conductor directional cavity coupler has advantages of smaller coupling plainness, high directivity, low intermodulation, low insertion loss, high power and easy processing.

The invention discloses a novel substrate integrated waveguide power divider/combiner and belongs to the field of microwave devices. The novel substrate integrated waveguide power divider/combiner comprises a single-layer substrate, a trapezoidal microstrip-substrate integrated waveguide transition structure arranged on the single-layer substrate, and an input/output port, wherein the single-layersubstrate is provided with a five-port narrow-walled short slit coupling unit and a lumped resistance loading matched load; two ends of the five-port narrow-walled short slit coupling unit are sequentially connected with the trapezoidal microstrip-substrate integrated waveguide transition structure and the input/output port; one end of the five-port narrow-walled short slit coupling unit is connected with the lumped resistance loading matched load; by increasing two isolated ports, perfect matching of five ports and high isolation of two branch ports can be realized, the lumped resistance loading matched load is connected to the isolated ports so as to realize broadband, the problem that the conventional traditional waveguide power divider and a substrate integrated waveguide power divider cannot simultaneously take the broadband and high isolation into account is solved, and the effect of broadening the bandwidth while ensuring the isolation is achieved.

The invention discloses an active short-wave broadband double-whip antenna, which comprises a first antenna radiation unit, a second antenna radiation unit, a loading network, a matching network and an integrated network circuit, one or more loading networks are arranged on the first antenna radiation unit and the second antenna radiation unit; the bottom ends of the first antenna radiation unit and the second antenna radiation unit are provided with a matching network, the matching network comprises a plurality of sub-matching networks, and different sub-matching networks correspond to different beam directions; the integrated network circuit controls feed phases of the first antenna radiation unit and the second antenna radiation unit in an out-of-phase feed mode; a beam direction of the radio frequency signal is obtained, and a sub-matching network corresponding to the beam direction is selected to carry out impedance matching on the first antenna radiation unit and the second antenna radiation unit; impedance matching when the wave beam points to different directions is met, and broadband of the antenna is achieved; the feed phase of the antenna radiation unit is controlled by adopting an out-phase feed mode, so that horizontal beam scanning of the antenna array in a working frequency band is realized, and the directional gain of the double-whip antenna is improved.

The invention discloses a liquid crystal-based multi-polarization reconfigurable patch antenna. The antenna comprises an upper glass substrate (01), a first metal pattern layer (02), a liquid crystal layer (03), a second metal pattern layer (04), a lower glass substrate (05) and a patch antenna layer (06) distributed sequentially. According to the antenna of the invention, through the phase change between phase shift units, the amplitude ratio is changed, the polarization state of the radiation antenna is switched, the disadvantages of large insertion loss and high cost of an antenna unit due to the introduction of an active device in a traditional phase shift module are avoided, and the requirements of broadband and multiple polarization states of the unit antenna are met; the multi-layer composite structure design is adopted, direct current signals are prevented from interfering other modules; and a radiation layer and a transmission layer are separated, the bandwidth is increased, and interference is avoided.

The invention provides a low-altitude antenna device capable of fully achieving broadband while inhibiting altitude. The low-altitude antenna device comprises a conductor plate (10), a reverse-L-shaped or reverse-F-shaped antenna element (20), and a passive element (30). The antenna element (20) comprises an antenna protruding portion (21) protruding from the conductor plate (10), and an antenna main body portion (22) deviously extended from the front of the antenna protruding portion (31). The passive element (30) comprises a passive protruding portion (31) protruding from the conductor plate (10), and a passive main body portion (32) deviously extended from the front of the passive protruding portion (31). In order to be stimulated from the antenna protruding portion (21), at least part of the passive protruding portion (31) is extended from the antenna protruding portion (21) in a manner opposite surface and in parallel. Observed from the top of the conductor plate (10), the passive main body portion (32) is extended in a manner that the distance between the passive main body portion (32) and the antenna main body portion (22) is more than that between the passive protruding portion (31) and the antenna protruding portion (21).

The invention provides a capacitive-coupling broadband satellite navigation antenna. The antenna comprises a radiation panel, a feed stud, a nut, a horizontal coupling piece, an inclined coupling piece and a printed circuit bottom board. The radiant panel is a double-sided printed circuit board, wherein the front surface is a circular metal copper-clad layer, the back surface is provided with fourcircular feed metal pieces, and the four circular feed metal pieces on the back surface are connected with the four circular feed metal pieces on the front surface through the metalized through holes. Capacitive coupling gaps exist between the front circular metal copper-clad layer and the four circular feed metal pieces. According to the invention, the problems of antenna broadband, low cost, phase center elevation difference and the like are well solved, and a design scheme of the capacitive coupling broadband satellite navigation antenna is emphatically provided, thereby achieving the broadband, low cost and light weight of the antenna.

The invention provides a radiation unit. The radiation unit comprises a radiator, a dielectric substrate, a feed structure, a first reflector, an air resonant cavity, a second reflector and an LC frequency-broadening circuit, wherein the LC frequency-broadening circuit is composed of a first open-circuit line printed on an inner frame or an outer frame of the radiator and a second open-circuit line coupled with the first reflector; the first open-circuit line of the inner frame or the outer frame of the radiator plays a role of an inductor L, the second open-circuit line is coupled with the first reflector to play a role of a capacitor C, and the first open-circuit line is thinner than the second open-circuit line. According to the invention, the thin open line and the wide body line are printed on the inner frame or the outer frame of the radiation unit, and the printed thin open line and the wide body line are coupled with the first reflector to form the LC frequency-broadening circuit, so that the size of the radiation unit can be greatly reduced, and the broadband of the radiation unit can be realized.

Disclosed in the invention is a single-polarized omnidirectional ceiling antenna comprising a reflection base plate and a radiation oscillator arranged on the reflection base plate. The antenna is characterized in that a feeder gasket is arranged between the reflection base plate and the radiation oscillator. A top loading structure is arranged above the radiation oscillator and is connected to the reflection base plate in a short circuit mode. Besides, a fixed connecting element is connected between the radiation oscillator and the top loading structure; and the gap is formed between the radiation oscillator and the top loading structure. According to the invention, the antenna has a simple structure; the good directional diagram roundness, voltage standing wave ratio, and gain index of the antenna are realized. A problem of indoor coverage of wireless signals can be solved well. Compared with the same type of product, the provided antenna has the better performance.