CN1866618A - Base station sector antenna for wireless metropolitan area network - Google Patents
Base station sector antenna for wireless metropolitan area network Download PDFInfo
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- CN1866618A CN1866618A CN 200510025972 CN200510025972A CN1866618A CN 1866618 A CN1866618 A CN 1866618A CN 200510025972 CN200510025972 CN 200510025972 CN 200510025972 A CN200510025972 A CN 200510025972A CN 1866618 A CN1866618 A CN 1866618A
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- Prior art keywords
- feeder line
- slit
- base station
- line section
- area network
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Abstract
The invention discloses a base station sector antenna of wireless regional domain net, which comprises the following parts: dielectric board, foaming dielectric material and metal reflecting notum, wherein the gap is set on the lower surface of dielectric board, whose circumstance is metal; the feeder line contains several bars of first feeder line segment and one second feeder line segment; the arrangement pattern of gap is two-row multi-line; the first feeder line is set on each line gap; the second feeder line segment parallels the middle part of first feeder line segment. The invention possesses convenient preparing technology, which provides 300-400 MHz broad communication bandwidth.
Description
Technical field
The present invention relates to a kind of base station sector antenna, particularly a kind of base station sector antenna for wireless metropolitan area network.
Background technology
Along with the continuous development of information technology, people are also improving constantly for the demand of communication network, and when the core net bandwidth had reached the Tbit level, the bandwidth rates of Access Network became the bottleneck of restriction high speed data transfers on the contrary.
WiMax, full name are World Interoperability for Microwave Access, and promptly World Interoperability for Microwave Access, WiMax is a wireless MAN (WMAN) access technology.It is the synonym of 802.16 standards, is a kind of new air-interface standard at microwave and millimeter wave frequency band proposition.It is used for 802.11 wireless access focuses are connected to the Internet, also can link environment such as company and family to the wired backbone circuit.It can be used as the wireless extensions technology of cable and DSL, thereby last kilometer of realizing WiMAX inserts.Its frequency 2-11GHz, maximum transmitting range is about 50 kilometers, every section maximum data rate is every sector 70Mbps, and each base station is configuration 6 or 4 sectors usually, and each sector can be supported more than 60 enterprise customer and hundreds of the domestic consumers that adopt DSL of adopting T1 simultaneously.The built-in service quality of MAC can be supported the different grades of service, thereby can support dissimilar users simultaneously.
WiMax is particularly suitable for the broadband services of Wide Area Network, fixing and mobile service.It had comprised the numerous achievements of 802.11 standards already, as service quality, and high security, the higher data transmission, mesh network technology (Mesh) and the intelligent antenna technology that can effectively utilize frequency range have very strong complementarity.Compare with Wi-Fi (802.11 series) wireless access network, coverage increases greatly, and correspondingly the quantity of access point significantly reduces, and transmission rate is also higher.It is also repaired potential safety hazard in addition, has increased the high-quality phone call functions, and has the ability that can transmit data, voice and video simultaneously.
Conventional base station sector antenna for wireless metropolitan area network often adopts feeding classification in parallel for the requirement of satisfying constant amplitude homophase between each array element, this feeding classification complex structure, and the feeder line total length is long, and feeder loss is higher, and its secondary lobe and back lobe electric radiation are higher.In addition, in order to ensure certain beamwidth of antenna, the microstrip array antenna often need adopt the design of multiple-layered patches formula, this makes antenna thickness become big, weight increases, and structure and preparation technology's relative complex, and it is relatively poor to produce repeatability in batches, the preparation cost height is unfavorable for the miniaturization and the lightness of base station sector antenna for wireless metropolitan area network.
How to solve the problems of the technologies described above, become the focus of current wireless metropolitan area network with the base station sector antenna structural design.
Summary of the invention
The object of the present invention is to provide a kind of base station sector antenna for wireless metropolitan area network.
For reaching above-mentioned purpose, spoke feeder line form and individual layer slit design scheme such as non-that the present invention adopts feeding classification that connection in series-parallel combines and electric current to be successively decreased to two ends by the centre.Concrete technical scheme is as follows:
A kind of base station sector antenna for wireless metropolitan area network, have and be followed successively by dielectric-slab, foam medium and metallic reflection backboard three-decker from top to bottom, described dielectric-slab upper surface is provided with feeder line, described dielectric-slab lower surface is provided with the slit, around the described slit is metal ground, the arrangement mode in described slit is arranged by the array way of two row multirows, described feeder line comprises many first feeder line section and one second feeder line section, described first feeder line section places on every capable slit, and described second feeder line section is in described first feeder line section of described many first feeder line section middle part series connection.
As a kind of optimal way of the present invention, described slit quantity and arrangement mode are two row, eight row.
As another optimal way of the present invention, described two row slit vertical ranges are a medium ripple wavelength X
e, the horizontal range in same row slit is 0.4 λ
e~ 0.8 λ
e, the length in described slit is 0.4 λ
e~ 0.6 λ
e, the width in described slit is 1/6 λ
e~ 1/10 λ
e, described foam medium thickness is 0.2 ~ 0.30 λ
e
Compare with conventional parallelly feeding mode, the feed structure that connection in series-parallel combines is simpler, and the feeder line total length reduces, and feeder loss is lower.And owing to adopt individual layer slit design scheme, it is compared with the multiple-layered patches design, and antenna thickness is thinner, and weight is lighter, and structure and preparation technology are simple, good reproducibility in batches, and preparation cost is low.In addition, because the non-spoke feeder line form that waits that has adopted electric current to be successively decreased to two ends by the centre, secondary lobe and back lobe electric radiation are low.Adopt the gap radiation form, antenna can provide the wide communication bandwidth of 300～400MHz (relative bandwidth is greater than 10%).
Further specify the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a base station sector antenna for wireless metropolitan area network structural representation of the present invention.
Fig. 2 is Figure 1A-A cut-away view
Embodiment
As shown in Figure 1 and Figure 2, a kind of base station sector antenna for wireless metropolitan area network, have and be followed successively by dielectric-slab 1, foam medium 2 and metallic reflection backboard 3 three-deckers from top to bottom, wherein said dielectric-slab 1 can adopt polytetrafluoroethylene, described foam medium 2 can adopt expandability polyethylene (claiming PE Foam again), described metallic reflection backboard 3 can adopt materials such as iron, aluminium, copper.Described dielectric-slab 1 upper surface is provided with feeder line 4, and described dielectric-slab 1 lower surface is provided with slit 5, is metal ground 6 around the described slit 5, and described slit quantity and arrangement mode are two row, eight row.The feed method that described feeder line 4 has adopted connection in series-parallel to combine, the non-spoke feeder line form that waits that electric current is successively decreased to two ends by the centre.
Specifically describe as follows:
Described feeder line 4 comprises many first feeder line section and one second feeder line section, and described first feeder line section places on every capable slit, and described second feeder line section is in described first feeder line section of described many first feeder line section middle part series connection.
The dielectric constant of root a tree name dielectric material and the width of feeder line 4, the vertical range in same row slit 5 are a medium ripple wavelength X e, arrive the homophase degree of each radiating element to guarantee electric current.0.4 λ e～0.8 λ e, the length in described slit 5 is 0.4 λ e～0.6 λ e, and the width in described slit 5 is 1/6 λ e～1/10 λ e, and described foam medium 2 thickness are 0.2～0.30 λ e.The horizontal subtended angle of the radiation of antenna can be regulated by the horizontal range Sh that regulates with delegation slit 5.
The impedance matching of antenna mainly by regulating the distance realization that feeder line leaves the edge, slit, is gone back scalable foam medium thickness (thickness between antenna and the reflecting plate), to realize the optimum impedance coupling.
Claims (3)
1. base station sector antenna for wireless metropolitan area network, have and be followed successively by dielectric-slab from top to bottom, foam medium and metallic reflection backboard three-decker, described dielectric-slab upper surface is provided with feeder line, described dielectric-slab lower surface is provided with the slit, around the described slit is metal ground, it is characterized in that: the arrangement mode in described slit is arranged by the array way of two row multirows, described feeder line comprises many first feeder line section and one second feeder line section, described first feeder line section places on every capable slit, and described second feeder line section is in described first feeder line section of described many first feeder line section middle part series connection.
2. base station sector antenna for wireless metropolitan area network according to claim 1 is characterized in that: described slit quantity and arrangement mode are two row, eight row.
3. root a tree name claim 1 or 2 described base station sector antenna for wireless metropolitan area network is characterized in that: described two row slit vertical ranges are a medium ripple wavelength X
e, the horizontal range in same row slit is 0.4 λ
e～0.8 λ
e, the length in described slit is 0.4 λ
e～0.6 λ
e, the width in described slit is 1/6 λ
e～1/10 λ
e, described foam medium thickness is 0.2～0.30 λ
e
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025972 CN1866618A (en) | 2005-05-19 | 2005-05-19 | Base station sector antenna for wireless metropolitan area network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025972 CN1866618A (en) | 2005-05-19 | 2005-05-19 | Base station sector antenna for wireless metropolitan area network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1866618A true CN1866618A (en) | 2006-11-22 |
Family
ID=37425550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510025972 Pending CN1866618A (en) | 2005-05-19 | 2005-05-19 | Base station sector antenna for wireless metropolitan area network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1866618A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101904052A (en) * | 2007-12-20 | 2010-12-01 | 原田工业株式会社 | Patch antenna device |
-
2005
- 2005-05-19 CN CN 200510025972 patent/CN1866618A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101904052A (en) * | 2007-12-20 | 2010-12-01 | 原田工业株式会社 | Patch antenna device |
| CN101904052B (en) * | 2007-12-20 | 2013-04-10 | 原田工业株式会社 | Patch antenna device |
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