CN102820553B - Ceiling antenna - Google Patents

Abstract

The invention relates to a ceiling antenna, which includes an upper cover, a lower cover, and a multi-antenna assembly arranged in the accommodation space surrounded by the upper cover and the lower cover, which includes: a first reflective medium surface, used for reflecting the multi-antenna assembly Radio waves with a frequency within the first frequency range; the first antenna unit is arranged on the surface of the first reflection medium; the first isolator is arranged on the surface of the first reflection medium and is electrically coupled to it; the second reflection medium The surface is used to reflect the radio waves used by the multi-antenna assembly and the frequency is within the second frequency range; the second antenna unit is arranged on the surface of the second reflection medium; the second isolator is arranged on the surface of the second reflection medium and Associated with its electrical coupling; the supporting member connects the first and second reflective medium surfaces and sets them at intervals. The surfaces of the two reflective media reflect radio waves of two different frequency bands, and the first and second isolators are used to isolate the antenna unit, so that the omnidirectionality of the ceiling antenna is better.

Description

ceiling antenna

technical field

The invention relates to the field of wireless communication equipment, and more specifically, relates to an omnidirectional ceiling-absorbing antenna.

Background technique

Ceiling antenna is a kind of mobile communication system antenna, mainly used for indoor signal coverage. Plate antennas are used for outdoor signal coverage, with high power, strong signal, and long-distance coverage; relatively speaking, indoor coverage, such as conference venues, hotels, office buildings, movie theaters, and residential buildings, requires indoor distributed system coverage. Just use a ceiling antenna to cover one floor.

However, indoors, due to the inherent shielding effect of building materials, the penetration loss of wireless signals is increased, which affects the signal reception and call quality of the network. For example, the blocking of the partition wall is 5~20dB, the blocking of the floor is more than 20dB, and the blocking of furniture and other obstacles is 2~15dB. How to improve the penetration of the signal, provide good omnidirectional coverage, and reduce the interference between signals is the research focus of the ceiling antenna.

Contents of the invention

In view of the above technical problems, the present invention provides a ceiling antenna with superior omnidirectionality and less antenna interference.

A ceiling antenna, comprising:

The upper cover has an accommodating space, and one end of the accommodating space is open;

a lower cover for closing the accommodation space on the opening;

A multi-antenna assembly is arranged in the accommodating space;

The multi-antenna assembly includes:

The surface of the first reflective medium is used to reflect radio waves used by the multi-antenna assembly and having a frequency within the first frequency band;

At least two first antenna units are both arranged on the surface of the first reflection medium;

At least one first isolator, arranged on the surface of the first reflective medium and associated with its electrical coupling, is used to isolate the radio waves used by each of the first antenna units from each other;

The surface of the second reflective medium is used to reflect radio waves used by the multi-antenna assembly and having a frequency within the second frequency band;

At least two second antenna units are both arranged on the surface of the second reflective medium;

At least one second isolator, arranged on the surface of the second reflective medium and associated with its electrical coupling, is used to isolate the radio waves used by each of the second antenna units from each other;

The supporting member connects the surface of the first reflection medium and the surface of the second reflection medium and arranges them at intervals.

Further, each antenna unit includes a dielectric substrate and an antenna conductor disposed on the surface of the dielectric substrate.

Further, the dielectric substrate operates at a frequency of 1 GHz and has an electrical loss tangent not greater than 0.0002.

Further, the antenna conductor includes a feeding part, a signal line, a transmitting station, a split coupling ring and a grounding plate; the transmitting station is arranged in the split coupling ring and corresponds to an opening of the split coupling ring, The signal line passes through the opening of the split coupling ring, and one end is integrated with the transmitting platform and the other end is connected to the feeder, and the ground plate is located outside the split coupling ring and coupled directly to the opening ring opening.

Further, the antenna conductor includes a feeder, a signal line, a transmitting station and a closed coupling structure, and the transmitting station is electrically connected to the closed coupling structure or coupled to the closed coupling structure.

Further, the antenna conductor includes a feeder, a signal line, a transmitting station and a closed coupling structure, the closed coupling structure has a composite topology, the signal line is arranged along the edge of the composite topology, and The end forms the launching pad.

Further, the closed coupling structure is formed by nesting a "mountain"-shaped topological structure within a "kou"-shaped topological structure to form the composite topological structure.

Further, the closed coupling structure is any one of complementary split resonant ring topological structure, complementary helical topological structure, complementary meander line topological structure, complementary split helical ring topology and double split helical ring topology .

Further, at least two positioning posts and at least two internally threaded posts are provided on the lower cover, and a corresponding number of positioning holes and a corresponding number of through holes are respectively provided on the surface of the first reflection medium, and each positioning post A positioning hole is passed through to position the lower cover and the surface of the first reflection medium, and a bolt is passed through a through hole and an inner threaded post to assemble and fix the lower cover with the surface of the first reflection medium.

Further, the overall size of the second reflective medium surface, the second antenna unit and the second isolator is smaller than the overall size of the first reflective medium surface, the first antenna unit and the first isolator.

Compared with the existing ceiling antenna, the ceiling antenna of the present invention adopts a special multi-antenna assembly, which includes two reflective medium surfaces, respectively reflecting radio waves of two different frequency bands; The first antenna unit and the second antenna unit on the surface are also separated by the first isolator and the second isolator, so that their respective radio waves are isolated from each other, so that the multi-antenna assembly is based on the applied wireless data The transmission and reception control method realizes high data transmission rate performance such as space multiplexing, space diversity, and beamforming.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is the structural representation of ceiling antenna of the present invention;

Fig. 2 is an exploded view of parts of the ceiling antenna shown in Fig. 1;

Fig. 3 is a partially enlarged view of the exploded view shown in Fig. 2;

Fig. 4 is a structural schematic diagram of the multi-antenna assembly of the ceiling antenna in Fig. 1 to Fig. 3;

FIG. 5 is a schematic plan view of an antenna unit in the multi-antenna assembly shown in FIG. 4;

6 is a schematic plan view of another antenna unit;

Fig. 7 is an explanatory schematic plan view in which the length of the transmitting station of the antenna conductor of the antenna unit shown in Fig. 6 is variable;

Fig. 8 is an explanatory schematic plan view in which the length and width of the antenna conductor shown in Fig. 6 are variable;

Fig. 9a is a topological plan view of a split resonator ring included in the antenna unit of the present invention;

Fig. 9b is a plan view of a complementary topological structure of the split resonant ring topology shown in Fig. 9a;

Fig. 10a is a plan view of a spiral topological structure included in the antenna unit of the present invention;

Figure 10b is a complementary topology plan view of the spiral topology shown in Figure 10a;

Figure 11a is a plan view of a meander line topology included in the antenna unit of the present invention;

Fig. 11b is a plan view of a complementary topological structure of the meander line topology shown in Fig. 11a;

Fig. 12a is a plan view of a split helical ring topology included in the antenna unit of the present invention;

Figure 12b is a complementary topological plan view of the split helical ring topology shown in Figure 12a;

Fig. 13a is a topological plan view of a double-opened helical ring included in the antenna unit of the present invention;

Figure 13b is a complementary topology plan view of the double-opened helical ring topology shown in Figure 13a;

Fig. 14 is a schematic diagram of the geometric shape derivation of the topological structure of the split resonator shown in Fig. 9a;

Fig. 15 is a schematic diagram of geometric shape derivation in the complementary split resonant ring topology shown in Fig. 9b;

Fig. 16 is a schematic diagram of the derivative of the complementary split resonator topology shown in Fig. 9b;

Fig. 17a is a plan view of a topological structure obtained by compounding and deriving the topological structures of the three complementary split resonators shown in Fig. 9b;

Fig. 17b is a plan view of a complementary topological structure to the topological structure shown in Fig. 17a.

Detailed ways

Reference will now be made in detail to the embodiments depicted in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods are not described in detail. procedures, components and circuits so as not to unnecessarily obscure the embodiments.

Please refer to FIG. 1 and FIG. 2 , which are structural diagrams of the ceiling antenna of the present invention. The ceiling antenna includes a hat-shaped upper cover 1 , a flat plate-shaped lower cover 2 , multiple antenna components, signal wires, and mounting fasteners. The upper cover 1 has an accommodating space with one end open, and the lower cover 2 covers the opening to close the accommodating space, and the multi-antenna assembly is located in the accommodating space. The mounting fasteners include hollow bolts 11 and nuts. The bolts 11 pass through the lower cover to be installed on the wall, and the nuts are used for locking and positioning. One end of the signal line is electrically connected to the multi-antenna assembly, and the other end is passed through the through hole in the middle of the bolt 11 and then connected to the external module outside the wall.

Referring to Fig. 2 and Fig. 4, it is a model diagram of a multi-antenna assembly; the multi-antenna assembly 2 includes a first reflective medium surface 9, at least one first isolator 12 fixed on one side of the first reflective medium surface 9, and at least two A first antenna unit 10 also includes a second reflective medium surface 90, at least one second isolator 120 fixed on one side of the second reflective medium surface 90 and at least two second antenna units 100, and also includes a support 33, It connects the first and second reflection medium surfaces and separates them with a certain distance.

The first reflective medium surface 9 is used to reflect radio waves whose frequencies used by the multi-antenna assembly 2 are in the first frequency range. Wherein, the radio wave with a frequency within the first frequency range refers to the electromagnetic wave generated by each first antenna unit 10 or the electromagnetic wave received by each first antenna unit 10, the first frequency band being the first antenna unit 10 generated or received frequency range of electromagnetic waves. In some embodiments, the first reflective medium surface 9 is disposed on the surface of the electromagnetic isolator 1 , the first reflective medium surface 9 may be made of copper or other conductive materials, and may be a non-planar surface. It can be understood that the first reflective medium surface 9 can have discontinuous points, such as a medium surface processed into a mesh structure or opened with holes to realize the function of reflecting radio waves, wherein the size of the mesh structure or holes is smaller than the above-mentioned One-tenth of the wavelength of radio waves used by multiple antenna assemblies. In this embodiment, the electromagnetic isolator 1 is made of metal material, that is, the surface of the electromagnetic isolator 1 made of conductive metal material becomes the first reflective medium surface 9 . In other implementation manners, the electromagnetic isolator 1 may be formed by processing a dielectric substrate clad with copper foil on both sides, and the copper foil constitutes the first reflective medium surface 9 .

In this embodiment, the first isolator 12 is inserted into the first reflective medium surface 9 by means of a slot to be fixed thereon. Of course, the first isolator 12 may also be installed in other ways, such as pin plug-in type, welding and so on. At the same time, the position of the first isolator 12 can be fixed or adjustable, for example, multiple groups of slots are set on the first reflective medium surface 9, and the first isolator 12 can be inserted into different slots according to actual needs to change installation location, etc. The first isolator 12 is electrically coupled and associated with the first reflective medium surface 9 and short-circuited with the first reflective medium surface 9 for isolating the radio waves of the first frequency band used by each first antenna unit 10 from each other. That is, when the antenna emits electromagnetic waves, the first isolator 12 also functions as a reflector for each antenna unit 10 at the same time. It can be understood that there may be multiple first isolators 12 made of copper, aluminum or other conductive materials. In the present invention, the first isolator 12 can be designed in various ways as required. In this embodiment, there are three first isolators 12, which jointly form three arms that open 120 degrees to each other, and the outside of each arm forms a certain cut angle to divide the upper three-dimensional space of the first reflective medium surface 9. into three-dimensional space.

Referring to FIG. 5 , each first antenna unit 10 includes a dielectric substrate 3 and an antenna conductor disposed on the surface of the dielectric substrate 3 .

The dielectric substrate 3 works at a frequency of 1 GHz, and has a nominal dielectric constant of ≤4.0 and an electrical loss tangent of ≤0.0002. The dielectric substrate includes glass fiber cloth, epoxy resin and a compound that reacts cross-linked with the epoxy resin. The first type of implementation of the dielectric substrate is as follows:

The manufacturing process of the dielectric substrate is as follows: first, a wetting solution is provided including: a first component, which contains epoxy resin; a second component, which contains a compound that cross-links with the epoxy resin; and one or Various solvents. Wherein the first component and the second component are configured and mixed according to a certain ratio.

After the soaking solution is stirred, soak the glass fiber cloth in the soaking solution so that the first component and the second component are adsorbed in the glass fiber cloth or on the surface; then bake the glass fiber cloth to make The one or more solvents are volatilized, and the first component and the second component are chemically combined and cross-linked to form a prepreg or a cured sheet. The prepreg refers to the glass fiber cloth that absorbs the first component and the second component in a relatively low baking temperature environment, and the first component contains epoxy resin and the second component contains the compound part to undergo a chemical crosslinking reaction. Soft mix. The cured product refers to the glass fiber cloth that absorbs the first component and the second component in a relatively high baking temperature environment, the first component contains epoxy resin and the second component contains the compound part to undergo a chemical crosslinking reaction relatively hard mixture.

In this embodiment, the impregnated glass fiber cloth is baked at a low temperature to form a semi-cured product (in the form of a sheet), and then the semi-cured product is cut into cut pieces, and the multiple cut pieces are stacked according to the thickness. Combining the multi-layer dielectric substrates (ie multi-layer laminates or sheets) for thermal pressing.

In a specific embodiment, the compound of the second component may include a copolymer composed of a polar polymer and a non-polar polymer, such as a styrene-maleic anhydride copolymer. It can be understood that any copolymer that can undergo a chemical crosslinking reaction with the epoxy resin can be used in the formulation components of this embodiment. Wherein the styrene maleic anhydride copolymer of present embodiment, its molecular formula is as follows:

Four styrenes are contained in the molecular formula of the above-mentioned styrene-maleic anhydride copolymer. In other embodiments, the corresponding molecular weight can be selected, for example, the molecular formula of the styrene-maleic anhydride copolymer contains 6, 8 or any number of styrenes. Epoxy resins generally refer to organic polymer compounds containing two or more epoxy groups in the molecule.

In other embodiments, the compound of the second component may also be a cyanate ester prepolymer or a mixture of styrene maleic anhydride copolymer and cyanate prepolymer in any proportion.

In a specific embodiment, the epoxy resin and styrene-maleic anhydride copolymer are prepared according to the ratio of functional values, and then a certain amount of solvent is added to form a solution. Described epoxy resin and styrene maleic anhydride copolymer mixing process adopt conventional equipment to process, make epoxy resin and styrene maleic anhydride copolymer homogeneously mix as common mixing tank and reactor, thereby make the in described solution Epoxy resin mixed with styrene maleic anhydride copolymer homogeneously.

In a specific embodiment, the gelation of the above-mentioned infiltration solution is promoted within 200-400 seconds by adding a certain accelerator (the gelling environment temperature is selected to be 171° C.), wherein the gelation time of the above-mentioned infiltration solution is accelerated to about 260 seconds (such as 258-400 seconds). 260 seconds, or 250-270 seconds, etc.) the effect is better. The accelerator can be selected to include but not limited to any one of tertiary amines, imidazoles and boron trifluoride monoethylamine or a mixture thereof.

The one or more solvents can be selected including but not limited to acetone, methyl ethyl ketone, N,N-dimethylformamide, ethylene glycol methyl ether, toluene or a mixture of two or more of the above solvents to form mixed solvents.

In another embodiment, the wetting solution includes: a first component including an epoxy resin; a second component including a compound that undergoes a cross-linking reaction with the epoxy resin; and one or more solvents. The compound of the second component is selected from a mixture of styrene maleic anhydride copolymer and cyanate prepolymer in any proportion. Wherein the concentration of the cyanate prepolymer is 75%. Accelerator selects dimethyl imidazole for use; Described solvent selects butanone for use. The dielectric substrate 3 of the present invention is manufactured through the above formula and its manufacturing process, thereby improving the radiation efficiency of the antenna conductor.

As shown in FIG. 5 , the antenna conductor includes a feeder 5 , a signal line 4 , a transmitting station 6 , a split coupling ring 7 and a ground plate 8 . The transmitting station 6 is arranged in the split coupling ring 7 and corresponds to the opening of the split coupling ring 7, the signal line 4 passes through the opening of the split coupling ring 7, and one end is integrated with the transmitting station 6 set, and the other end is connected to the power feeding part 5. The ground plate 8 is located outside the split coupling ring 7 at a certain interval and is facing the opening thereof. In this embodiment, the signal to be transmitted by the radio frequency circuit 11 is transmitted to the feeder 5 through the coaxial line 105 , and the coaxial line 105 is electrically connected to the feeder 5 through the first reflective medium surface 9 .

Please refer to FIGS. 6 and 7 together, which are respectively a schematic plan view of a pin plug-in antenna unit and an explanatory schematic plan view of a variable transmitting station. In this embodiment, the antenna conductor includes a feeder 5 , a signal line 4 , a transmitting station 6 and a closed coupling structure 7 . The closed coupling structure 7 is a complementary split resonant ring topology. The transmitting station 6 is electrically connected to the closed coupling structure 7 (shown in FIG. 6 ) or coupled to the closed coupling structure 7 (shown in FIG. 7 ).

Please refer to FIG. 8 , which is a topological diagram of the closed coupling structure 7 of the antenna conductor of the present invention. For different topological structures, parameters such as length d, width w, and spacing S between lines of the topological structure are changed according to simulation software such as CST and HFSS. At the same time, the number of turns of the helix formed by the topology wiring can also be adjusted. The number of turns of the helix shown in FIG. 8 is 2. By adjusting the above-mentioned parameters to realize the design target antenna, the parameters affecting the antenna conductor are optimized. In addition, the length and width of the signal line 4 of the antenna conductor, and the area of the ground plate 8 are also parameter variables for developing and designing the antenna, so the above parameters are adjusted according to the antenna indicators such as the target resonant frequency band, directivity, gain, etc., to achieve the target antenna performance index .

In order to meet the requirements of antenna development and design, topological structures of different shapes have been developed to meet the requirements of antenna design, please refer to the topological structures of different shapes shown in Figure 9 to Figure 13, these topological structures adopt the topological structures in various artificial electromagnetic materials and its derived structures. For example, a complementary split resonant ring topology (as shown in FIGS. 9 a and 9 b ) can be selected for the topology, that is, the shapes of the two topologies shown in FIGS. 9 a and 9 b are complementary. This kind of design is equivalent to increasing the physical length of the antenna (the actual length size does not increase), which can make the development of the antenna beneficial to miniaturization.

The topologies shown in Figures 9a and 9b mutually form a pair of complementary split resonator topologies. The topology shown in FIG. 9b is a split resonant ring topology, and FIG. 9a is a complementary topology to the topology shown in FIG. 9b. The topology can also be selected from a pair of complementary spiral topology as shown in Figures 10a and 10b, a pair of complementary meander topology as shown in Figures 11a and 11b, a pair of complementary meander topology as shown in Figures 12a and 12b A pair of complementary split helical loop topologies and a pair of complementary double split helical loop topologies as shown in Figures 13a and 13b.

The topological structure of the closed coupling structure 7 may be one or a topological structure obtained by deriving, compounding or forming an array of the previous structures. There are two types of derivation, one is geometry derivation and the other is extension derivation. The geometric shape derivation here refers to the derivation of structures with similar functions and different shapes, for example, the open curve topology, the open triangle topology, the open polygon topology and other different polygon structures derived from the box structure, as shown in Figure 9a The split resonant metal ring structure shown is taken as an example, and Fig. 14 is a schematic diagram of its geometric shape derivation. Taking the split resonant metal ring structure as shown in FIG. 9b as an example, FIG. 15 is a schematic diagram of its geometric shape derivation. In addition to the above two derivations from the geometric shape, it also includes the self-extension and derivation of the topological structure. Please refer to the metal derivation method shown in Figure 16, and the split-resonant metal ring structure shown in FIG.

The above-mentioned extension and derivation is to compound and superpose each other on the basis of the topological structures in Figures 9 to 13 to form a topological structure; the compounding here means that at least two topological structures as shown in Figures 9 to 13 are compounded and superimposed to form a composite topology structure. The composite topology shown in FIG. 17a is formed by composite nesting of three complementary split resonator topologies as shown in FIG. 9b. Thus, a complementary composite topology (as shown in FIG. 17b ) is obtained from the topology shown in FIG. 17a.

The array refers to any one of the above complementary split resonant ring topology, complementary helical topological structure, complementary bent line topology, complementary split helical ring topology and double split helical ring topology. Arranged in an array at a certain interval on a plane. The topology of the closed coupling structure 7 may be the topology obtained after such an array.

The antenna conductor is disposed on the surface of the dielectric substrate by any one of laser engraving technology and etching technology.

The above descriptions to the first reflective medium surface 9, the first antenna unit 10, and the first isolator 12 are respectively applicable to the second reflective medium surface 90, the second antenna unit 100, and the second isolator 120, that is, they are one by one Corresponding to the same, only the size of the upper structure formed by the latter is obviously smaller than the size of the lower structure formed by the former, so the frequencies of the radio waves used are different, that is, the frequency of the electromagnetic waves received and generated by the second antenna unit 10 is in the second frequency band Within the range, the electromagnetic waves of two different frequency bands are separated by the second reflective medium surface 90, thereby effectively reducing the mutual interference between electromagnetic waves of different frequency bands. For the electromagnetic waves used by multiple antenna units in each layer structure, they are separated by the first isolator 12 or the second isolator 120 corresponding to each layer, which reduces the influence between adjacent antenna units and is conducive to improving the overall performance. tropism.

In addition, in terms of structural design, in addition to improving the structural distribution of the multi-antenna components, the present invention also improves the overall packaging and positioning of the ceiling antenna. As shown in Figure 2 and Figure 3, in order to install the first medium reflective surface 9, four through holes 92 are provided, and the corresponding position of the lower cover 2 is provided with four internally threaded columns 22 with a certain height, through which a bolt passes. A through hole 92 is assembled and locked with the corresponding inner threaded column 22 to fix the first medium reflection surface 9 and the lower cover 2 . But because the relative position of the two is not fixed when the first bolt is installed, it is not easy to install. Therefore, on the lower cover 2 of the ceiling antenna of the present invention, two positioning columns 21 higher than the internally threaded columns 22 are arranged beside the two internally threaded columns 22, correspondingly, on the first medium reflection surface 9, corresponding Two positioning holes 91 are provided. Before installation, first pass the two positioning posts 21 through the two positioning holes 91 and make the first medium reflective surface 9 stop on the top surface of the internally threaded post 22, and then install the bolts, so that the first medium reflective surface 9 will not occur. Relative to the problem of lower cover 2 shaking. The lower cover 2 and the upper cover 1 are also assembled and fixed by bolts.

The multi-antenna assembly includes a common reflection surface and a plurality of antenna units arranged on the common reflection surface, and then the plurality of antenna units are isolated from each other. The multi-antenna assembly realizes high data transmission rate performances such as space multiplexing, space diversity, and beamforming based on the applied wireless data transmission and reception control method. Thereby providing a wireless high-speed mobile Internet device, system and subsystem antenna assembly based on protocols such as IEEE 802.11n\e.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.

Claims (8)

1. a ceiling mount antenna, is characterized in that, comprising:

Upper cover, has spatial accommodation, described spatial accommodation one end open;

Lower cover, lid closes described spatial accommodation over said opening;

Multi-antenna component, is arranged in described spatial accommodation;

Described multi-antenna component comprises:

First reflecting medium surface, for reflecting described multi-antenna component uses, the radio wave of frequency in the first band limits;

At least two the first antenna elements, are all arranged at described first reflecting medium on the surface;

At least one first isolator, is arranged at described first reflecting medium on the surface and associate with its electrical couplings, mutually isolated respectively for the radio wave used by the first antenna element described in each;

Second reflecting medium surface, for reflecting described multi-antenna component uses, the radio wave of frequency in the second band limits;

At least two the second antenna elements, are all arranged at described second reflecting medium on the surface;

At least one second isolator, is arranged at described second reflecting medium on the surface and associate with its electrical couplings, mutually isolated respectively for the radio wave used by the second antenna element described in each;

Strutting piece, connects described first reflecting medium surface and the second reflecting medium surface, and is arranged at the two interval;

First antenna element described in each and the second antenna element comprise a medium substrate respectively and are arranged at an antenna conductor on described medium substrate surface, and described medium substrate, at 1GHz operation at frequencies, has the electrical loss tangent amount being not more than 0.0002.

2. ceiling mount antenna according to claim 1, is characterized in that, described antenna conductor comprises a current feed department, holding wire, transmitting station, opening coupling loop and ground plate; Described transmitting station to be arranged in described opening coupling loop and to correspond to the opening part of described opening coupling loop, described holding wire through the opening of described opening coupling loop and one end be connected with described current feed department with the integral other end that arranges of transmitting station, it is outside and face the opening of described opening coupling loop that described ground plate is positioned at described opening coupling loop.

3. ceiling mount antenna according to claim 1, is characterized in that, described antenna conductor comprises a current feed department, holding wire, transmitting station and closed coupled structure, the described transmitting station described closed coupled structure of electrical connection or the described closed coupled structure of coupling association.

4. ceiling mount antenna according to claim 1, it is characterized in that, described antenna conductor comprises a current feed department, holding wire, transmitting station and closed coupled structure, described closed coupled structure has Compound Topology structure, described holding wire is arranged along described Compound Topology structural edge, and forms described transmitting station at end.

5. ceiling mount antenna according to claim 3, is characterized in that, described closed coupled structure is nested with " mountain " shape topological structure by " mouth " shape topological structure and forms this Compound Topology structure.

6. ceiling mount antenna according to claim 3, it is characterized in that, described closed coupled structure be in complementary split ring resonator topological structure, complementary helix topological structure, complementary folding line topological structure, complementary opening helical ring topological structure and two opening helical ring topological structure any one.

7. ceiling mount antenna according to claim 1, it is characterized in that, cover under described and be provided with at least two reference columns and at least two internal threaded columns, described first reflecting medium is respectively equipped with the location hole of respective amount and the through hole of respective amount on the surface, each reference column is through a location hole thus locate on lower cover and the first reflecting medium surface, and a bolt passes a through hole and an internal threaded column thus by lower cover and the first reflecting medium is surface-mounted fixes.

8. ceiling mount antenna according to claim 1, it is characterized in that, the size of the entirety that described second reflecting medium surface, the second antenna element and the second isolator are formed is less than the size of the entirety that the first reflecting medium surface, the first antenna element and the first isolator are formed.