CN207265216U - A kind of broadband all-around top absorbing antenna - Google Patents
A kind of broadband all-around top absorbing antenna Download PDFInfo
- Publication number
- CN207265216U CN207265216U CN201721222510.9U CN201721222510U CN207265216U CN 207265216 U CN207265216 U CN 207265216U CN 201721222510 U CN201721222510 U CN 201721222510U CN 207265216 U CN207265216 U CN 207265216U
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- antenna
- bottom plate
- broadband
- feed body
- circular cone
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Abstract
The utility model discloses a kind of broadband all-around top absorbing antenna, the circular cone that bottom plate is connected in including bottom plate and top feeds body, bottom plate connects with circular cone feed body and is combined into monopole antenna, there is wideband, circular cone feed body side surface forms angle with base plate plane, as angle diminishes, the impedance of antenna is as frequency tendency of changes is in 50 ohm of real impedances, and then impedance bandwidth is widened so that antenna has broadband properties, while the antenna structure is simple, is easily installed.Coupling ring is provided with outside circular cone feed body, coupling ring is connected to the bottom plate by supporting item.On the basis of custom backplane size, ground connection coupling ring is added, is intended to increase the electrical length size of bottom plate, resonant frequency reduces, so as to reduce the section height of antenna, reduces the size of antenna.Supporting item one end connection coupling ring other end ground connection, the setting for being grounded supporting item play the role of strengthening antenna structure stability and impedance match.
Description
Technical field
The utility model belongs to mobile communication antenna technical field, is related to a kind of indoor verticalization ceiling mount antenna, specifically
Say and be related to a kind of broadband low section all-around top absorbing antenna.
Background technology
With economic quick, lasting development, communications industry has been increasingly becoming commercial and industrial there occurs great variety
The even key factor of other industry sustainable developments such as agricultural.In the field of communications, the development of mobile communication is more dazzling brilliant,
People have been unsatisfactory in fixed-site processing information stream, and people can be led in real time by mobile phone in the life of modern
News, smart mobile phone, can after realizing wireless network access by mobile communication network more such as portable minicom
Conveniently realize the functions such as personal information management, data information access, application program, the download of music picture.Mobile equipment into
For a part indispensable in modern life.
With the process of urbanization, the place such as large buildings, station needs signal seamless coverage to meet the communication of people
Demand, the good covering of indoor signal are the important components of whole communication network, and in-door covering is that one kind is directed to indoor user
Colony, the communication solution for improving mobile communication environment in building, indoor covering system are guarantee indoor communications letter
Number it is good play important function, its principle is to be evenly distributed on the signal of mobile base station using domestic aerial compartment system
Indoor every nook and cranny, so as to ensure that room area possesses preferable signal covering.
The construction of indoor signal cover system more can comprehensively improve Tonghua quality in building, improve mobile electricity
Words percent of call completed, hew out the indoor mobile communication field of high quality, while can share the grand bee of indoor and outdoor using micro cellular system
Nest traffic, expand network capacity, improves the service level of mobile network on the whole.By the distributed antenna system in building,
Mobile communication signal is transferred to all angles in building by antenna feeder, reaches the problem of improving indoor signal strength and quality.
At the same time, it can also make up because of the energy of feeder loss loss by reload signal amplifier, expand host coverage.
Base station or microcellulor and indoor distributed system can also be utilized indoors, can effective absorption chamber internal traffic, share outdoor base
Stand traffic load, solve the problems, such as indoor and outdoor telephone traffic congestion and interference.To matter caused by high-rise pingpang handoff, adjacent frequency interference
Amount problem, can improve signal strength by selective amplification, solve interference problem.
At present in mobile communication indoor distribution system, the species of antenna mainly has：All-around top absorbing antenna, wall aerial,
Directional ceiling antenna and log-periodic antenna.All-around top absorbing antenna is extensively using in a communications system.In some hot spot regions such as
Station, harbour, airport, subway station etc., it is more that communication system contains public security private network government affairs cluster communication and public network mobile communication etc.
Kind system.But at present conventional all-around top absorbing antenna there are volume it is big, it is complicated, be difficult to install the problem of, while existing suction
It is limited to push up antenna bandwidth, causes feature bad.
Utility model content
For this reason, the utility model be exactly to solve above-mentioned technical problem so that propose a kind of compact, it is simple in structure,
It is easily installed and can meets the broadband all-around top absorbing antenna of broadband operation.
In order to solve the above technical problems, the technical solution of the utility model is：
The utility model provides a kind of broadband all-around top absorbing antenna, and the ceiling mount antenna includes bottom plate and top is connected to
The circular cone feed body of the bottom plate.
Preferably, being provided with coupling ring outside the circular cone feed body, the coupling ring is connected to institute by supporting item
State bottom plate.
Preferably, the bottom plate is plectane, the center of circle of the bottom plate is alignd with the circular cone feed body bottom surface center of circle to be set
Put.
Preferably, the axis of the circular cone feed body is set perpendicular to the bottom plate.
Preferably, further including feed body support column, described feed body support column one end is connected to the circular cone feed body
Side, the other end are connected to the bottom plate.
Preferably, the coupling top surface of ring is in same plane with circular cone feed body bottom surface.
Preferably, the wavelength of the antenna minimum frequency is λ, a diameter of 1/2 λ of bottom plate, the circular cone feeds body
Basal diameter is 0.25 λ, and a diameter of 0.4 λ of the coupling ring, the distance of the coupling ring and the bottom plate is 1/8 λ.
Preferably, the bottom plate is also associated with the mounting assembly for installing the antenna, the mounting assembly includes
It is mutually adapted the nut and stud of connection.
Preferably, being additionally provided with antenna house outside the coupling ring, the antenna house is detachably connected with the bottom plate.
Preferably, the supporting item is 4, it is distributed along the coupling ring even circumferential, the supporting item ground connection.
The above-mentioned technical proposal of the utility model has the following advantages compared with prior art：
(1) broadband all-around top absorbing antenna described in the utility model, the ceiling mount antenna are connected including bottom plate with vertex
The circular cone feed body of the bottom plate is arranged at, bottom plate connects with circular cone feed body and is combined into monopole antenna, has wideband
Feature, circular cone feed body side surface form angle with base plate plane, and as angle diminishes, the impedance of antenna is with frequency tendency of changes
In 50 ohm of real impedances, and then impedance bandwidth is widened so that antenna has broadband properties, while the antenna structure is simple, is easy to
Installation.
(2) broadband all-around top absorbing antenna described in the utility model, the circular cone feed and are provided with coupling ring outside body,
The coupling ring is connected to the bottom plate by supporting item.On the basis of custom backplane size, ground connection coupling ring is added, is become
Reduce in the electrical length size for increasing bottom plate, resonant frequency, so as to reduce the section height of antenna, reduce antenna
Size.Described supporting item one end connection coupling ring other end ground connection, being grounded the setting of supporting item, to play enhancing antenna structure steady
The qualitative and effect of impedance match.
(3) broadband all-around top absorbing antenna described in the utility model, further includes feed body support column, the feed body branch
Dagger one end is connected to the circular cone feed body side surface, the other end is connected to the bottom plate, and feed body support column plays support institute
The effect of circular cone feed body is stated, improves the structural strength and stability of antenna.
Brief description of the drawings
In order to be more likely to be clearly understood the content of the utility model, below according to the specific implementation of the utility model
Example and with reference to attached drawing, is described in further detail the utility model, wherein
Fig. 1 is the structure diagram of the broadband all-around top absorbing antenna described in the utility model embodiment；
Fig. 2 is the exploded view of the broadband all-around top absorbing antenna described in the utility model embodiment；
Fig. 3 is the horizontal radiation pattern of the broadband all-around top absorbing antenna described in the utility model embodiment；
Fig. 4 is the standing wave curve of the broadband all-around top absorbing antenna described in the utility model embodiment.
Reference numeral is expressed as in figure：1- bottom plates；2- circular cones feed body；3- coupling rings；4- supporting items；5- feeds body branch
Dagger；6- nuts；7- studs；8- electric wires；9- antenna houses.
Embodiment
Embodiment
A kind of broadband all-around top absorbing antenna is present embodiments provided, available for indoor moving communication system, such as Fig. 1-2 institutes
Show, it includes a circular bottom plate 1 and top (vertex side) is connected to the circular cone feed body 2 of the bottom plate 1, the bottom plate 1 and circle
Cone feed body 2 forms monopole structural antenna.
Conventional unipolar antenna is the vertical antenna with 1/4 wavelength, and antenna is fed by coaxial (non-equilibrium) transmission line, this
Kind antenna is generally mounted to a ground plane, and the ground plane can be that actual ground can also be artificial ground plane, single
The feed of pole antenna is to be carried out in lower extreme point using coaxial cable, and the earth conductor of feeder line is connected with platform.In free sky
Between in, the antenna pattern of quarter-wave monopole on a vertical plane and half-wave doublet antenna are in vertical plane
Pattern shapes are similar, but are radiated without underground.In the horizontal plane, vertical unipole antenna is omni-directional.Quarter-wave
The input impedance of unipole antenna root is the half of dipole antenna impedance, and radiant power is also the half of dipole antenna.
In the present embodiment, feed body is arranged to cone, in feed end, by the gradual change of the internal and external conductor of coaxial transmission line
Taper, progressively broadening impedance bandwidth, constitutes the antenna of wideband, is that one kind can meet 350-366MHZ＆806-960MHZ＆
The wide band all-around top absorbing antennas of 1710-2700MHZ.
Specifically, the bottom surface center of circle of the center of circle of the circular bottom plate 1 and the circular cone feed body 2 is alignd setting, the circle
The axis of cone feed body 2 is set perpendicular to the bottom plate 1, the center of circle, the bottom surface center of circle of circular cone feed body 2 of the bottom plate 1
On the axis of circular cone feed body 2.
Since the size of antenna is directly determined by the minimum frequency of whole bandwidth of operation, the section of conventional unipolar sub-antenna is high
It is 1/2 λ to spend for 1/4 λ (λ is the wavelength of minimum frequency), base plate size, in order to reduce section height size, described in the present embodiment
Broadband all-around top absorbing antenna further include coupling ring 3, the coupling ring 3 is arranged at outside the circular cone feed body 2, coupling ring
The bottom surface of 3 top surfaces and circular cone feed body 2 is in same plane, and coupling ring 3 is connected to the bottom plate 1 by one group of supporting item 4,
The supporting item 4 is ground connection supporting item, and the supporting item 4 is cuboid flaky texture, and each 4 one end of supporting item passes through screw
It is connected to 3 inner circumferential of coupling ring, the other end is connected by screw makes the coupling ring 3 in the bottom plate 1, the supporting item 4
Ground connection, increases the electrical length size of bottom plate 1, so as to reduce resonant frequency, reduce cone section height.The present embodiment
In, the wavelength of antenna minimum frequency is λ, a diameter of 1/2 λ of bottom plate 1, and circular cone feed 2 basal diameter of body is 0.25 λ,
A diameter of 0.4 λ of the coupling ring 3, the distance of the coupling ring 3 and the bottom plate 1 is 1/8 λ.
Since the quantity of supporting item 4 has important shadow to the out-of-roundness of the horizontal radiation pattern of antenna impedance and bandwidth of operation
Ring, the experiment proved that, when supporting item 4 is arranged to 4, properties are optimal, therefore in the present embodiment, the supporting item 4 is preferred
For 4, it is distributed along the even circumferential of the coupling ring 3.
To further improve the firmness degree of antenna, one group of feed body support column 5, the feed body support column 5 are further included
For rectangular parallelepiped structure, every 5 one end of feed body support column is connected to 2 side of circular cone feed body, the other end be connected to it is described
Bottom plate 1, circular cone feed body 2 is supported so that antenna structure stability is more.In the present embodiment, the cone support column 5
For 3.
Further, the bottom plate 1 is also associated with the mounting assembly for installing the antenna, and the mounting assembly includes
The nut 6 and stud 7 of connection are mutually adapted, the stud 6 is hollow stud, is internally provided with electric wire 8.In order to improve antenna
Service life and aesthetics, are additionally provided with antenna house 9 outside coupling ring 3, the antenna house 9 and bottom plate 1 are detachably connected.
The horizontal radiation pattern of the broadband all-around top absorbing antenna is tested, the results are shown in Figure 3, described in the present embodiment
For antenna in 350MHz-2700MHZ working bands, gain about 2-6db, directional diagram out-of-roundness is less than 5db, meets design requirement.
In addition the standing wave curve of antenna is measured, the curve map is as shown in figure 4, ordinate under the frequency of 350-366MHZ
VSWR values are less than 1.5 under the frequency of (VSWR values) less than 2,806-960MHZ＆1710-2700MHZ, meet design requirement.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (10)
1. a kind of broadband all-around top absorbing antenna, it is characterised in that the ceiling mount antenna is connected to described including bottom plate and top
The circular cone feed body of bottom plate.
2. broadband all-around top absorbing antenna according to claim 1, it is characterised in that set outside the circular cone feed body
There is coupling ring, the coupling ring is connected to the bottom plate by supporting item.
3. broadband all-around top absorbing antenna according to claim 2, it is characterised in that the bottom plate is plectane, the bottom
The center of circle of plate and the circular cone feed body bottom surface center of circle are alignd setting.
4. broadband all-around top absorbing antenna according to claim 3, it is characterised in that the axis of the circular cone feed body hangs down
Directly set in the bottom plate.
5. broadband all-around top absorbing antenna according to claim 4, it is characterised in that further include feed body support column, institute
State that feed body support column one end is connected to the circular cone feed body side surface, the other end is connected to the bottom plate.
6. broadband all-around top absorbing antenna according to claim 5, it is characterised in that the coupling top surface of ring and the circle
Cone feed body bottom surface is in same plane.
7. broadband all-around top absorbing antenna according to claim 6, it is characterised in that the wavelength of the antenna minimum frequency
For λ, a diameter of 1/2 λ of bottom plate, the circular cone feed body basal diameter is 0.25 λ, a diameter of 0.4 λ of the coupling ring,
The distance of the coupling ring and the bottom plate is 1/8 λ.
8. broadband all-around top absorbing antenna according to claim 7, it is characterised in that the bottom plate is also associated with being used to pacify
The mounting assembly of the antenna is filled, the mounting assembly includes being mutually adapted the nut and stud of connection.
9. broadband all-around top absorbing antenna according to claim 8, it is characterised in that be additionally provided with outside the coupling ring
Antenna house, the antenna house are detachably connected with the bottom plate.
10. broadband all-around top absorbing antenna according to claim 9, it is characterised in that the supporting item is 4, along institute
State the distribution of coupling ring even circumferential, the supporting item ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721222510.9U CN207265216U (en) | 2017-09-22 | 2017-09-22 | A kind of broadband all-around top absorbing antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721222510.9U CN207265216U (en) | 2017-09-22 | 2017-09-22 | A kind of broadband all-around top absorbing antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207265216U true CN207265216U (en) | 2018-04-20 |
Family
ID=61918429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721222510.9U Expired - Fee Related CN207265216U (en) | 2017-09-22 | 2017-09-22 | A kind of broadband all-around top absorbing antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207265216U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963410A (en) * | 2018-08-31 | 2018-12-07 | 南京信息工程大学 | A kind of low section small base station antenna applied to indoor ceiling |
| CN110190384A (en) * | 2019-06-21 | 2019-08-30 | 四川九洲电器集团有限责任公司 | A kind of omni-beam figuration discone antenna |
| CN110797628A (en) * | 2019-11-09 | 2020-02-14 | 南京信息工程大学 | Top loading sleeve antenna applied to UAV |
-
2017
- 2017-09-22 CN CN201721222510.9U patent/CN207265216U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963410A (en) * | 2018-08-31 | 2018-12-07 | 南京信息工程大学 | A kind of low section small base station antenna applied to indoor ceiling |
| CN110190384A (en) * | 2019-06-21 | 2019-08-30 | 四川九洲电器集团有限责任公司 | A kind of omni-beam figuration discone antenna |
| CN110797628A (en) * | 2019-11-09 | 2020-02-14 | 南京信息工程大学 | Top loading sleeve antenna applied to UAV |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 Termination date: 20200922 |