CN201956464U - Shunt-feed omnidirectional array antenna - Google Patents
Shunt-feed omnidirectional array antenna Download PDFInfo
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- CN201956464U CN201956464U CN2011200709683U CN201120070968U CN201956464U CN 201956464 U CN201956464 U CN 201956464U CN 2011200709683 U CN2011200709683 U CN 2011200709683U CN 201120070968 U CN201120070968 U CN 201120070968U CN 201956464 U CN201956464 U CN 201956464U
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Abstract
The utility model discloses a shunt-feed omnidirectional array antenna. The omnidirectional array antenna comprises a microwave dielectric substrate, wherein a plurality of dipoles and a shunt-feed network are printed on the microwave dielectric substrate by adopting the PCB (Printed Circuit Board) technology, and the dipoles serve as radiating elements and are arranged into two linear arrays; a metallic reflection board is arranged between the two linear arrays and is perpendicular to the microwave dielectric substrate; an upper slot and a lower slot which are not communicated with each other are respectively formed at both the upper end and the lower end of the microwave dielectric substrate and led to the center of the microwave dielectric substrate; and a slot is formed at the lower half part of the metallic reflection board; a main feeding port connected with a feed cable is formed at the top of the lower slot and divided into two paths by a power divider for dividing one into two, each path is divided into multiple paths by the shunt-feed network to feed for the dipoles. In the utility model, the reflection board is additionally arranged between the two antenna arrays to form the omnidirectional antenna, so that the problem that an omnidirectional antenna formed by one antenna array has difficulty in solving the sheltering problem of the shunt-feed network, and the omnidirectional antenna can easily achieve shunt feed.
Description
Technical field
The utility model relates to a kind of printed antenna that is applied to wireless communication field, is specifically related to a kind of omni-directional array antenna of parallelly feeding.
Background technology
In wireless communication system, what system architecture mainly solved is to provide communication link for numerous fixing base stations.Communicate by letter in order to provide for the fixed base stations that is positioned at central authorities with numerous substation points, central base station generally adopts omnidirectional antenna.Therefore omnidirectional antenna is with a wide range of applications.The increase of wireless communication rate inevitably need take wideer frequency spectrum and use higher centre frequency.This has proposed new challenge for the design of omnidirectional antenna.The omnidirectional antenna of practical application is to satisfy the requirement of communication system to gain, adopts the form of aerial array more.The feed system of array antenna can be parallel-connection structure, cascaded structure, series and parallel mixed structure.At the wideband omnidirectional array antenna more than 10%, the series feed structure is inappropriate for relative bandwidth, because when the same day, line was operated in non-central frequency, the resonant element of series connection can not keep same-phase.The unit of series connection is many more, feed and last feed at first unit when system works during at band edge phase difference big more.The problem of bringing is that the greatest irradiation direction changes with operating frequency of antenna, and units in series must be many more, and bandwidth of operation is wide more, and problem is just serious more.In general series feed only be suitable for gain require not too high, relative bandwidth 10% with interior omni-directional array antenna.Parallelly feeding can finely address this problem, and makes antenna possess broadband and high-gain two big advantages simultaneously.But the parallelly feeding mode also is not easy to design omnidirectional antenna.The development of this class omnidirectional antenna is not smooth in the world, gain, and bandwidth, omni-directional can not be carried out simultaneously.The omnidirectional antenna that seeks out broadband, high-gain has only all very high this method of conformal array of manufacture difficulty, complexity and cost, and this method is along with the improve of operating frequency of antenna, and manufacture difficulty also will increase.Therefore study and a kind ofly can be operated in upper frequency, the broadband, high-gain, directional pattern is stable, and the good omnidirectional antenna of omni-directional is very significant.
The utility model content
Goal of the invention: the purpose of this utility model is at the deficiencies in the prior art, provide a kind of and can satisfy broadband, high-gain, higher operating frequency, stable directional pattern, good omni-directional requirement well, simultaneously can reduce manufacture difficulty again, reduce cost the omni-directional array antenna of the parallelly feeding of being convenient to produce in batches.
Technical scheme: the omni-directional array antenna of parallelly feeding described in the utility model, adopt the plane electric circuit technology, array adopts the parallelly feeding method, the occasion that is suitable for bandwidth high-gain omni-directional antenna application requirements, specifically comprise the microwave-medium substrate, be printed with several dipole and parallelly feeding networks as radiating element with PCB technology on the described microwave-medium substrate, several dipoles are lined up two alignment arrays; Be provided with the metallic reflection plate between the two alignment arrays, described metallic reflection plate and vertical installation of described microwave-medium substrate are symmetrically distributed in the two sides of dielectric substrate; The upper/lower terminal of described microwave-medium substrate has disconnected mutually go up groove and following groove to the center, and last groove is used to embed the metallic reflection plate, and following groove is walked for feeder cable; The latter half of described metallic reflection plate has groove, walks for embedding microwave-medium substrate and feeder cable; The total feed port that is connected with feeder cable is arranged on down the top of groove, is divided into two-way by the power splitter that is divided into two, and every road is the dipole feed by parallelly feeding network demultiplexing again.By adjusting size and the linear array and the distance between it of metallic reflection plate, can obtain the omnidirectional radiation characteristic,
In order to obtain bigger bandwidth of operation, on two faces of described microwave-medium substrate, the oscillator arms of the dipole on two faces fuses by plated-through hole with the printed on both sides of PCB technology for dipole and parallelly feeding network.
For weight and the convenient processing that alleviates the metallic reflection plate, described metallic reflection plate can be covered with the dielectric-slab replacement of Copper Foil with the surface, plays reflex equally.
Beneficial effect: the utility model compared with prior art, its beneficial effect is:
1, the utility model constitutes omnidirectional antenna with the mode that adds reflecting plate in the middle of the two array antenna arrays, overcome an array antenna and constituted the problem that the difficult solution of omnidirectional antenna parallelly feeding network blocks, make omnidirectional antenna have omni-directional preferably, be easy to realize parallelly feeding.
2, existing most of omnidirectional antenna is compared, each radiating element feed that it is antenna that the utility model adopts full parallelly feeding mode, overcome the shortcoming of series feed and connection in series-parallel mixing feed omnidirectional antenna, had the bandwidth of operation of broad, omnidirectional radiation directional diagram, higher gain and stable wave beam preferably.
3, use thin two-sided deposited copper microwave-medium substrate, the space that feeding network is occupied is less, can realize the omni-directional array antenna that unit number is more, gain is higher, and the operating frequency of antenna also can be designed to be higher.
Description of drawings
Fig. 1 is on-chip aerial array of the utility model microwave-medium and parallelly feeding network, and wherein (a) is the antenna face figure; (b) be antenna back side figure;
Fig. 2 has been the dielectric-slab that the surface of reflecting plate effect is covered with Copper Foil, and wherein (a) is positive; (b) be the back side;
Fig. 3 is the omni-directional array antenna structural representation of the utility model embodiment parallelly feeding;
Fig. 4 is the omni-directional array antenna input port S11 test result of the utility model embodiment parallelly feeding;
Fig. 5 is the omni-directional array antenna H face directional diagram test result of the utility model embodiment parallelly feeding;
Fig. 6 is the omni-directional array antenna E face directional diagram test result of the utility model embodiment parallelly feeding.
Embodiment
Below in conjunction with accompanying drawing, technical solutions of the utility model are elaborated, but protection range of the present utility model is not limited to described embodiment.
A kind of omni-directional array antenna of parallelly feeding, comprise microwave-medium substrate 1, be printed with several dipole 2 and parallelly feeding networks with PCB technology on the described microwave-medium substrate 1 as radiating element, dipole 2 and the printed on both sides of parallelly feeding network are on two faces of described microwave-medium substrate 1, and the oscillator arms of the dipole on two faces 201,202 fuses by plated-through hole 203; Several dipoles 2 are lined up two alignment arrays 4,5; Be provided with metallic reflection plate 10 between the two alignment arrays 4,5, described metallic reflection plate 10 and described microwave-medium substrate 1 vertical installation are symmetrically distributed in the two sides of dielectric substrate 1; The upper/lower terminal of described microwave-medium substrate 1 has disconnected mutually go up groove 81 and following groove 82 to the center, and last groove 81 is used to embed metallic reflection plate 10, and following groove 82 is walked for feeder cable; The latter half of described metallic reflection plate 10 has groove 9, walks for embedding microwave-medium substrate 1 and feeder cable; The total feed port 301 that is connected with feeder cable is arranged on down the top of groove 82, is divided into two-way by the power splitter 6 that is divided into two, and every road is dipole 2 feeds by parallelly feeding network 3 demultiplexings again; The dielectric-slab that described metallic reflection plate 10 uses the surface to be covered with Copper Foil 11 is replaced.
Two-sided deposited copper microwave-medium substrate 1 is printing two tier dipole array row and parallelly feeding network above for thickness is that 0.254mm, dielectric constant are 2.2 the low medium substrate that decreases of Rogers in the present embodiment.Carry out feed with the little band edge mouth 301 of coaxial pair, microstrip line is through dividing two-way equally with the parallel wire coupling and with power behind the quarter-wave transformer, parallel wire is formed parallelly feeding network 3, advances twice merit again and divides back and double-deck dipole 2 input impedance matching.Coaxial line with one section flattening of covering midsection of joint, is soldered directly to little band edge mouth behind the removal medium in order to be connected with microstrip line.In order to intersect with another piece plank and to insert coaxial line, the place, axis of medium substrate has opened two grooves 81,82 up and down.Metallic reflection plate 10 mainly plays reflection aspect electrical property, can replace with the dielectric-slab of double-sided copper-clad, present embodiment promptly adopts the dielectric-slab of double-sided copper-clad to replace the metallic reflection plate, reflecting plate 10 thickness adopt 1.5mm double-sided copper-clad dielectric-slab, on the one hand in order that sufficiently high mechanical strength is provided, supporting microwave-medium substrate 1, is for coaxial line being embedded in the reflecting plate 10 fully, avoiding the feeder line of the two-sided deposited copper microwave-medium substrate 1 of coaxial pair to form interference on the other hand.By the width and the length of accommodation reflex face, can strengthen or the radiation intensity of diminished reflex face vertical direction, on the four direction that the sub-quadrature of two boards forms, form near the gain that equates, make antenna on the H face, form the directional pattern of omnidirectional.In order to embed coaxial line, a groove 9 has also been left in bottom, reflecting plate 10 axis.In order to reduce the influence to two-sided deposited copper microwave-medium substrate 1 feed place, the groove of reflecting plate 10 bottoms is wideer at this place.Coaxial line is embedded in the groove of reflecting plate 10, and welds together with Copper Foil on the reflecting plate, makes antenna have higher mechanical strength.
As mentioned above, although represented and explained the utility model that with reference to specific preferred embodiment it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make various variations in the form and details to it.
Claims (3)
1. the omni-directional array antenna of a parallelly feeding, comprise microwave-medium substrate (1), be printed with several dipoles as radiating element (2) and parallelly feeding network on the described microwave-medium substrate (1), it is characterized in that: several dipoles (2) are lined up two alignment arrays (4,5); Two alignment arrays are provided with metallic reflection plate (10) between (4,5), and described metallic reflection plate (10) and the vertical installation of described microwave-medium substrate (1) are symmetrically distributed in the two sides of dielectric substrate (1); The upper/lower terminal of described microwave-medium substrate (1) has disconnected mutually go up groove (81) and following groove (82) to the center, and last groove (81) is used to embed metallic reflection plate (10), and following groove (82) is walked for feeder cable; The latter half of described metallic reflection plate (10) has groove (9), walks for embedding microwave-medium substrate (1) and feeder cable; The total feed end (301) that is connected with feeder cable is arranged on down the top of groove (82), is divided into two-way by the power splitter (6) that is divided into two, and every road is dipole (a 2) feed by parallelly feeding network (3) demultiplexing again.
2. the omni-directional array antenna of parallelly feeding according to claim 1, it is characterized in that: on two faces of described microwave-medium substrate (1), the oscillator arms (201,202) of the dipole on two faces fuses by plated-through hole (203) with the printed on both sides of PCB skill for dipole (2) and parallelly feeding network.
3. the omni-directional array antenna of parallelly feeding according to claim 1 is characterized in that: described metallic reflection plate (10) replaces with the dielectric-slab that the surface is covered with Copper Foil (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200709683U CN201956464U (en) | 2011-03-17 | 2011-03-17 | Shunt-feed omnidirectional array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200709683U CN201956464U (en) | 2011-03-17 | 2011-03-17 | Shunt-feed omnidirectional array antenna |
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| Publication Number | Publication Date |
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| CN201956464U true CN201956464U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200709683U Expired - Fee Related CN201956464U (en) | 2011-03-17 | 2011-03-17 | Shunt-feed omnidirectional array antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122763A (en) * | 2011-03-17 | 2011-07-13 | 东南大学 | All-round array antenna for parallel feed |
| CN102882005A (en) * | 2012-06-12 | 2013-01-16 | 电子科技大学 | Microstrip antenna, array consisting of microstrip antenna, array set and array set group |
| CN103050774A (en) * | 2012-11-20 | 2013-04-17 | 江苏安特耐科技有限公司 | 2.4G four-unit vertical unipolar antenna vibrator |
| CN103296423A (en) * | 2012-02-29 | 2013-09-11 | 日立电线株式会社 | Antenna device and array antenna |
| CN111033894A (en) * | 2017-07-18 | 2020-04-17 | 康普技术有限责任公司 | Small cell antenna suitable for MIMO operation |
| US11018416B2 (en) | 2017-02-03 | 2021-05-25 | Commscope Technologies Llc | Small cell antennas suitable for MIMO operation |
-
2011
- 2011-03-17 CN CN2011200709683U patent/CN201956464U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122763A (en) * | 2011-03-17 | 2011-07-13 | 东南大学 | All-round array antenna for parallel feed |
| CN103296423A (en) * | 2012-02-29 | 2013-09-11 | 日立电线株式会社 | Antenna device and array antenna |
| CN102882005A (en) * | 2012-06-12 | 2013-01-16 | 电子科技大学 | Microstrip antenna, array consisting of microstrip antenna, array set and array set group |
| CN102882005B (en) * | 2012-06-12 | 2015-10-21 | 电子科技大学 | The array of a kind of microstrip antenna and composition thereof, array group and array cohort |
| CN103050774A (en) * | 2012-11-20 | 2013-04-17 | 江苏安特耐科技有限公司 | 2.4G four-unit vertical unipolar antenna vibrator |
| US11018416B2 (en) | 2017-02-03 | 2021-05-25 | Commscope Technologies Llc | Small cell antennas suitable for MIMO operation |
| CN111033894A (en) * | 2017-07-18 | 2020-04-17 | 康普技术有限责任公司 | Small cell antenna suitable for MIMO operation |
| US10924169B2 (en) | 2017-07-18 | 2021-02-16 | Commscope Technologies Llc | Small cell antennas suitable for MIMO operation |
| CN111033894B (en) * | 2017-07-18 | 2021-09-21 | 康普技术有限责任公司 | Small cell antenna suitable for MIMO operation |
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| Date | Code | Title | Description |
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| 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: 20110831 Termination date: 20180317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |