CN201812933U - Integrated filter antenna - Google Patents
Integrated filter antenna Download PDFInfo
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- CN201812933U CN201812933U CN201020262758XU CN201020262758U CN201812933U CN 201812933 U CN201812933 U CN 201812933U CN 201020262758X U CN201020262758X U CN 201020262758XU CN 201020262758 U CN201020262758 U CN 201020262758U CN 201812933 U CN201812933 U CN 201812933U
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Abstract
The utility model relates to the technical field of communication, in particular to an integrated filter antenna. An oscillator plate of the antenna is of an integrated structure and is combined with two pairs of vertical and horizontal antenna units of which the polarization directions are orthogonal mutually. The oscillator plate and filter feed networks are integrated. The integrated filter antenna is provided with the dual polarization antenna units, can enable two polarizations to be radiated by a common oscillator, makes the two polarizations achieve the optimal gain under the condition of unchanged size and meets the width requirement of lobes on the two polarizations. The size of the antenna is reduced. The integrated filter antenna has the filtering function, particularly reduces the frequency multiplication interference, also has a certain inhibition effect on the adjacent channel interference, makes an interference signal attenuated further on front-end equipment such as the antenna and the like, greatly weakens the strength of the interference signal entering a system, enables a base station to work normally in the complex electromagnetic environment, obviously improves the communication quality, has small size, wide market prospect and great social benefit and economic benefit.
Description
Technical field:
The utility model relates to communication technical field, refers in particular to a kind of antenna.
Background technology:
(WLAN as transmission medium, provides the function of traditional LAN with the wireless multiple access channel for Local Area Network, extension LAN), has realized at any time, broadband network inserts everywhere as cable LAN.And characteristics such as along with the continuous development of its application, it is easily installed, easily expansion, manageability, easy care, high mobility show especially day by day, and have shown the development prospect that it is unprecedented gradually.Microstrip antenna have thin profile, volume little, simple in structure, be fit to printed circuit technique produce in enormous quantities, can be conformal with carrier, be easy to integrated, make simple, be easy to realize the multiple advantage of dual polarization or the like.Microstrip antenna is little with its efficient height, size, analytical method maturation etc. has the not available advantage of antenna of other type and used widely.Yet, microstrip antenna itself intrinsic narrow bandwidth, it is low to gain etc., and shortcoming makes its application be subjected to some restrictions.Add parasitic patch though these shortcomings can adopt, technology such as slit coupling feed overcome, and still can not satisfy the requirement of present wireless communication system.
For the growth of satisfying number of users and traffic carrying capacity, satisfy the system extension demand, reduce equipment cost and support wireless network, WLAN must take some enhancement techniques and system extension scheme to strengthen network extensibility, and the capacity of optimization fixed broadband wireless access system and bandwidth availability ratio.The MIMO multi-antenna technology is used for the WLAN communication network, can under the situation that does not increase bandwidth, improves the capability of communication system and the availability of frequency spectrum exponentially.MIMO (multiple input multiple output) wireless communication technology is the focus of current wireless Communication Studies.Mimo system is called multiaerial system (multiple antennasystems) again, its essence is exactly space diversity and spatial reuse, be to utilize the technology that pilosity is penetrated, multiple receive antenna carries out space diversity and time diversity, what it adopted is the many antennas of discrete, can effectively communication link be decomposed into many parallel subchannels, thereby improve capacity greatly.It is considered to be in the strong solution that satisfies ever-increasing capacity requirement in the abundant multi-path environment, also being the key technology of next generation wireless communication, also is the core technology of WLAN802.16, IEEE 802.20 and standards such as 3GPP, LTE simultaneously.The breadboard researcher of Bell shows that to the research work of MIMO communication system under the situation with sufficient room degree of freedom, the MIMO communication technology has the ability that the power system capacity linearity is significantly improved; The work of Tarokh then proves, is adopting under the suitable coding techniques condition, and the MIMO communication technology can effectively improve the transmission quality of system, greatly improves the diversity gain of system.MIMO communication technology advantage is in particular in following two aspects: (1) space diversity gain: wireless signal is in when transmission, owing to move and the power change at random of multipath signal, and Here it is fading effect.Diversity is to the strong means of anti fading, and it mainly relies on the transmission of same signal by a plurality of independent declines path, and obviously, fading probability is very low simultaneously in a plurality of paths.Compare with frequency diversity with the time, the benefit of MIMO space diversity maximum is can be not if having time and the expenditure of frequency resource.Do not consider multiplexingly, autonomous channel, NM road is arranged, this NM bar passage is compared with SISO if receiver is integrated, and can obtain NM diversity order effect, and the BER of received signal (error rate) performance can be significantly increased.(2) spatial reuse gain: MIMO can realize that channel capacity is with min (M, N) linear increasing in the situation that does not increase transmitting power or band resource.This gain is exactly a spatial gain, mainly transmits different information by different antennae, realizes the transfer of data that the N road is parallel.
Spatial degrees of freedom has been brought up to and the equal status of the time degree of freedom, think the space the same with the time be the decision capability of wireless communication system key factor, polarization characteristic then is one of key property of spatial degrees of freedom.People utilize electromagnetic orthogonal polarization characteristics design communication system always for a long time, all successfully utilize the power system capacity of dual polarization acquisition in microwave, the satellite communication, utilize orthogonal polarization to realize that diversity also is applied already with the fading characteristic of resisting wireless multipath simultaneously with respect to single polarization system twice.Effectively utilize the spatial degrees of freedom of wireless multipath channel, the resource of excavation propagation channel is the key problem of MIMO communication system physical Design especially.Antenna be the MIMO communication system directly in the face of the part of propagation channel, also be system to the sensitive portions of spatial degrees of freedom.In traditional communication system, the base station end often utilizes the very big multi-antenna array implementation space diversity of spacing, does not then go deep into for the design of the many antennas in mobile terminal.Meanwhile, when spacing reduced between the antenna, it is more and more serious that the coupled problem between the antenna then becomes, and restricted the raising of systematic function.Be different from space M IMO antenna, the multi-polarization antenna utilization is positioned at a plurality of antenna elements of same position, makes full use of the information of electromagnetic a plurality of field components, improves the spatial degrees of freedom in the confined space very significantly.At present domestic antenna market is over half to be that the businessman of America and Europe, Japan etc. is occupied, and the occupation rate of market of the antenna of domestic independent development only is about 35%.Domestic antenna is in working frequency range, owing to do not adopt interference protection measure, poor anti jamming capability on antenna.The MIMO dual polarized antenna adopts filtering technique in the WLAN communication network, the present domestic like product that still do not have.
The utility model content:
The purpose of this utility model is to overcome the defective of prior art, and a kind of integrated filter antenna with dual polarized antenna unit and filter function is provided.
The utility model purpose again provides a kind of simple in structurely, and volume is little, makes and use easy integrated filter antenna.
For achieving the above object, the utility model adopts following technical scheme:
Integrated filter antenna, this antenna mainly includes shell and setting base plate, oscillator plate and oscillator sheet in the enclosure, the oscillator plate is installed on the base plate, and the oscillator sheet is installed on the oscillator plate, the oscillator plate is an integral structure, its combination has vertical and the mutually orthogonal antenna element of level two consequent pole directions, and oscillator plate and filtering feeding network are integrally formed.
Space interval between described vertical and two groups of oscillator radiation of level two slave antenna units shareds, two groups of oscillators is 9～15cm.
Described oscillator sheet is the aluminium sheet of 1.2mm.
Described antenna and wireless aps integrate and the one encapsulation.
The utility model is on the basis of company's original WLAN dual polarized antenna technological accumulation, aim at the advanced level of MIMO antenna in the world, development is based on the integrated WLAN antenna for base station of AP/ filtering/MIMO, adopt the filter antenna designing technique of our company's original creation, make antenna itself have filter function, and it is antenna and AP mainboard is integrated, reduced half workload of mounted base station, realize low-loss, high-gain, broadband, optimum performance such as volume is little, can suppress useless interference signal significantly, have stronger antijamming capability, reduced the frequency multiplication interference especially, the neighbour is disturbed frequently also certain inhibition, improve communication quality, can be applicable to the WLAN broadband access under the complex electromagnetic environments, transfer of data, the harbour wireless monitor, various fields such as RFID.This technology has been filled up domestic relevant art blank, has very big society and economic benefit.
The utility model has following beneficial effect thus:
1, adopt dual polarization technology antenna can launch or receive the electromagnetic wave of two orthogonal polarizations, therefore in same bandwidth, can launch two kinds of signals, this helps channeling or transmitting-receiving is worked simultaneously; Save the antenna amount of single directional base station, dual polarized antenna has the advantage of electrical tilt antenna simultaneously, uses dual polarized antenna the same with electrical tilt antenna in mobile radio communication, can reduce call loss, reduces to disturb, and improves the service quality of the whole network.The utility model can make two polarization under the situation of size constancy, to make two polarization all reach optimum gain by shared oscillator radiation, has satisfied level with lobe width requirement in vertical two polarization, thus the size of having reduced antenna greatly.
2, adopt the filter antenna designing technique, make antenna itself have filter function, the 2400-2500MHz signal can be passed through, and the decay in the 4-6GHz stopband is not less than 20dB almost undampedly, thereby makes antenna have stronger anti-frequency multiplication interference performance; And at 2.6-4GHz, because filter circuit still has certain attenuation, simultaneously the oscillator of this section with the caused return loss of filter circuit impedance mismatching, thereby antenna also has certain anti-adjacent interference performance frequently, significantly reduce the interference signal intensity of the system that enters into, make the base station under complex electromagnetic environment, have superior communication quality.
3, this antenna adopts air microstrip and the oscillator of autonomous innovation and the designing technique of feeding network one, significantly reduces the loss of feeder line, thereby improves the standing-wave ratio of antenna, performances such as return loss, and the whole section of reduction antenna reduce size, reduce cost, and helped processing.
4, antenna and wireless aps integrate, and reduce by wire jumper to connect problems such as inconvenience in the construction that feed brings and water-tight, have reduced the base station workload of half is installed, and have not needed additionally to do water-proofing treatment.
Description of drawings:
Accompanying drawing 1 is the utility model profile schematic diagram;
Accompanying drawing 2 is the mounting structure front schematic view of base plate of the present utility model, oscillator plate and oscillator sheet;
Accompanying drawing 3 is the structural upright schematic diagram of Fig. 2;
Accompanying drawing 4 is the side sectional view of the structure of Fig. 2;
Accompanying drawing 5 is the oscillator plate structure schematic diagram of Fig. 2.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further specified:
Consult shown in Fig. 1～5, the integrated filter antenna that the utility model provides, this antenna 100 mainly include shell 1 and are arranged on base plate 2, oscillator plate 3 and oscillator sheet 4 in the shell 1.Shell 1 is a rectangle, and the back side is provided with mounting bracket 11 and indicator light 12 etc.; Base plate 2 is encapsulated in the shell 1, and oscillator plate 3 is installed on the base plate 2, and the plastic cement intercolumniation is arranged every support; Oscillator sheet 4 is installed on the oscillator plate 3, the plastic cement intercolumniation is also arranged every support between oscillator sheet 4 and oscillator plate 3.Oscillator plate 3 is an integral structure, and its combination has vertical and the mutually orthogonal antenna element 31,32 of level two consequent pole directions; Oscillator plate 3 adopts the processing of semihard aluminium sheets, after the combination, and the isolation 〉=15dB between the vertical and level two slave antenna unit 31,32, the space interval between the two slave antenna unit 31,32 is 8～12cm.Space interval between vertical and level two slave antenna unit, 31,32 shared two groups of oscillators, 35,36 radiation, two groups of oscillators 35,36 is 9～15cm.
Described oscillator sheet 4 is the aluminium sheet of 1.2mm, and oscillator plate 3 is integrally formed with filtering feeding network 33,34, and integrated punching is shaped when part processing, has filter function.Characteristics such as the antenna 100 that the utility model provides also integrates with wireless aps, has reduced feeder loss, has reduced signal simultaneously and has delayed, and also is beneficial to the heat radiation of mainboard, makes entire product have function admirable, and is attractive in appearance, easy for installation.
The utility model has made up vertical and the mutually orthogonal antenna element of level two consequent pole directions, is operated in simultaneously under the transmission duplex pattern, and each sub-district only needs a secondary dual polarized antenna.When omni cell is split into three sub-districts, at most only increase common antenna.With respect to traditional single-polarized antenna (when omni cell was split into three sub-districts, antenna amount increased severely, even also increase by 4 pairs at least when dual-mode), the utility model reduces the platform that fixes up an aerial wire greatly, has reduced capital expenditure.Horizontal vertical polarization orthogonal of the present utility model can guarantee that level is with vertical
Isolation between the two slave antenna unit satisfies intermodulation to the isolation between antennas requirement, space interval between the dual polarized antenna only needs 8～12cm, therefore iron tower can be built in the mobile base station, the iron prop that only needs a diameter 20cm of frame, dual polarized antenna is fixed on the iron prop by corresponding coverage direction gets final product, not high to setting up installation requirement, do not need expropriation of land to build tower, save capital expenditure, make station layout more reasonable simultaneously.
The dual polarized antenna permission system that the utility model provides adopts the polarization diversity reception technique.Its principle is the irrelevance of utilizing between the dual polarization direction, and irrelevance degree has between the two determined the quality of diversity reception.Because horizontal vertical is orthogonal polarization, therefore can effectively guarantee diversity reception, its polarization diversity gain is about 5dB, than the about 2dB of space diversity raising of the common employing of single-polarized antenna.In addition, the space diversity reception effect of single-polarized antenna is relevant with the position of two secondary reception antennas, and it is best that antenna covers positive direction, weakens to both sides gradually, causes the actual coverage in sub-district to be dwindled.And the utility model adopts polarization diversity to replace space diversity reception to communicate, and almost it doesn't matter for diversity gain and aerial position, and the difference that covers principal direction and edge is very little, therefore can effectively improve the reception of edge, guarantees coverage.
The utlity model has the advantage of electrical tilt antenna, in the WLAN communication network, use dual polarized antenna the same, can reduce call loss, reduce to disturb, improve the service quality of the whole network with electrical tilt antenna.If the use dual polarized antenna because dual polarized antenna is not high to setting up installation requirement, can be saved capital expenditure, make the wlan network layout more reasonable simultaneously.Domestic antenna is in working frequency range, because dielectric loss all can produce decay to a certain degree, poor anti jamming capability.The MIMO dual polarized antenna adopts filtering technique in the WLAN communication network, the present domestic like product that still do not have.
Vertical and level two slave antenna unit 31 of the present utility model, 32 shared two groups of oscillators 35,36 radiation, by shared oscillator technology, two polarization of antenna are gathered together, has the polarization diversity function, reduced size simultaneously, and the impedance design technology by oscillator self, guaranteeing under the prerequisite that the oscillator frequency bandwidth meets the demands, its characteristic impedance is 100 Ω, thereby with filter circuit coupling, make that oscillator and feeding network can one-shot formings when part processing, significantly reduced the solder joint number, allow entire antenna have good third order intermodulation performance, strengthen the anti-adjacent interference capability frequently of antenna; And the oscillator structure of double applying sheet then in broadening antenna bandwidth of operation, has also strengthened the gain of antenna.
Oscillator and feeding network all adopt the structure of air microstrip, have then significantly reduced the loss of microwave in transmission course, compare general PCB material, can reduce more than the 0.5dB.Simultaneously, oscillator adopts the aluminium sheet of 1.2mm, compares the copper pool of the not enough 0.1mm of PCB material, has improved resistance to corrosion widely, and life of product is greatly improved.
The integrated design of entire antenna and AP mainboard, and one encapsulation have reduced feeder loss, have reduced signal simultaneously and have delayed, also be beneficial to the heat radiation of mainboard, make the entire product performance more excellent, when mounted, need not to connect feed by wire jumper again, construction and installation are more convenient, and water-tight has preeminent performance.
More than diagram is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so every principle according to the utility model is done the equivalence variation or modified, and all should be covered by in the protection range of the present utility model.
Claims (4)
1. integrated filter antenna, this antenna (100) mainly includes shell (1) and is arranged on shell (1) interior base plate (2), oscillator plate (3) and oscillator sheet (4), oscillator plate (3) is installed on the base plate (2), and oscillator sheet (4) is installed on the oscillator plate (3), it is characterized in that: oscillator plate (3) is an integral structure, its combination has vertical and the mutually orthogonal antenna element (31,32) of level two consequent pole directions, and oscillator plate (3) is integrally formed with filtering feeding network (33,34).
2. integrated filter antenna according to claim 1 is characterized in that: the vertical and shared two groups of oscillators in level two slave antenna unit (31,32) (35,36) radiation, the space interval between two groups of oscillators (35,36) is 9～15cm.
3. integrated filter antenna according to claim 1 is characterized in that: described antenna (100) integrates with wireless aps.
4. integrated filter antenna according to claim 1 is characterized in that: described oscillator plate (3) is the aluminium sheet of 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020262758XU CN201812933U (en) | 2010-07-19 | 2010-07-19 | Integrated filter antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020262758XU CN201812933U (en) | 2010-07-19 | 2010-07-19 | Integrated filter antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812933U true CN201812933U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020262758XU Expired - Fee Related CN201812933U (en) | 2010-07-19 | 2010-07-19 | Integrated filter antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN201812933U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956569A (en) * | 2014-04-23 | 2014-07-30 | 南通大学 | Differential Quasi-Yagi antenna with filtering function |
| CN106602280A (en) * | 2016-08-09 | 2017-04-26 | 广东通宇通讯股份有限公司 | Filtering feed network and base station antenna |
| CN107706512A (en) * | 2016-08-09 | 2018-02-16 | 广东通宇通讯股份有限公司 | Feed Networks for Massive MIMO Antennas |
| CN108321489A (en) * | 2017-01-17 | 2018-07-24 | 中兴通讯股份有限公司 | A kind of mimo antenna and terminal |
| CN108682939A (en) * | 2018-04-19 | 2018-10-19 | 深圳三星通信技术研究有限公司 | A kind of filter antenna |
| CN109088133A (en) * | 2018-07-18 | 2018-12-25 | 华南理工大学 | Radio-frequency devices |
| CN113036432A (en) * | 2021-03-10 | 2021-06-25 | 广东富宇鸿通讯有限公司 | Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna |
| EP3979518A4 (en) * | 2019-06-28 | 2022-07-20 | ZTE Corporation | Filter antenna and base station device |
-
2010
- 2010-07-19 CN CN201020262758XU patent/CN201812933U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956569A (en) * | 2014-04-23 | 2014-07-30 | 南通大学 | Differential Quasi-Yagi antenna with filtering function |
| CN103956569B (en) * | 2014-04-23 | 2016-05-04 | 南通大学 | The difference Quasi-Yagi antenna of integrating filtering function |
| CN106602280A (en) * | 2016-08-09 | 2017-04-26 | 广东通宇通讯股份有限公司 | Filtering feed network and base station antenna |
| CN107706512A (en) * | 2016-08-09 | 2018-02-16 | 广东通宇通讯股份有限公司 | Feed Networks for Massive MIMO Antennas |
| CN107706512B (en) * | 2016-08-09 | 2019-09-27 | 广东通宇通讯股份有限公司 | Feed network system for large-scale MIMO antenna |
| CN108321489A (en) * | 2017-01-17 | 2018-07-24 | 中兴通讯股份有限公司 | A kind of mimo antenna and terminal |
| CN108682939A (en) * | 2018-04-19 | 2018-10-19 | 深圳三星通信技术研究有限公司 | A kind of filter antenna |
| CN108682939B (en) * | 2018-04-19 | 2022-12-02 | 深圳三星通信技术研究有限公司 | Filtering antenna |
| CN109088133A (en) * | 2018-07-18 | 2018-12-25 | 华南理工大学 | Radio-frequency devices |
| CN109088133B (en) * | 2018-07-18 | 2023-10-31 | 华南理工大学 | RF devices |
| EP3979518A4 (en) * | 2019-06-28 | 2022-07-20 | ZTE Corporation | Filter antenna and base station device |
| CN113036432A (en) * | 2021-03-10 | 2021-06-25 | 广东富宇鸿通讯有限公司 | Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20150719 |
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| EXPY | Termination of patent right or utility model |